1 00:00:04,309 --> 00:00:02,389 good afternoon from the johnson space 2 00:00:06,869 --> 00:00:04,319 center here in houston texas i'm nasa's 3 00:00:08,150 --> 00:00:06,879 josh byerly coming up on december 21st 4 00:00:10,709 --> 00:00:08,160 we will have two crew members of 5 00:00:12,870 --> 00:00:10,719 expedition 38 rick mastracchio and mike 6 00:00:15,110 --> 00:00:12,880 hopkins are going to be going outside to 7 00:00:16,470 --> 00:00:15,120 conduct a series of spacewalks to 8 00:00:17,910 --> 00:00:16,480 swap out this ammonia pump that we've 9 00:00:19,990 --> 00:00:17,920 been talking about for the last few days 10 00:00:21,189 --> 00:00:20,000 here to talk about the decision process 11 00:00:22,950 --> 00:00:21,199 and also what's ahead for the crew 12 00:00:24,550 --> 00:00:22,960 members are mike saffordini the 13 00:00:27,269 --> 00:00:24,560 international space station program 14 00:00:28,630 --> 00:00:27,279 manager as well as dina contella the 15 00:00:29,990 --> 00:00:28,640 international space station flight 16 00:00:32,389 --> 00:00:30,000 director and we are also joined by 17 00:00:33,750 --> 00:00:32,399 allison bollinger the spacewalk officer 18 00:00:35,430 --> 00:00:33,760 who has helped choreographed what's 19 00:00:36,950 --> 00:00:35,440 ahead for the crew we'll get started 20 00:00:38,709 --> 00:00:36,960 with mike 21 00:00:40,790 --> 00:00:38,719 good afternoon i thought we'd spend a 22 00:00:41,910 --> 00:00:40,800 few moments kind of starting from the 23 00:00:43,750 --> 00:00:41,920 beginning 24 00:00:45,270 --> 00:00:43,760 when we first saw this anomaly then 25 00:00:46,229 --> 00:00:45,280 we'll walk you through the steps to get 26 00:00:48,150 --> 00:00:46,239 you 27 00:00:49,990 --> 00:00:48,160 to where we are today 28 00:00:51,510 --> 00:00:50,000 and then dina allison can talk to you 29 00:00:53,670 --> 00:00:51,520 about the eba itself and the 30 00:00:54,630 --> 00:00:53,680 preparations for the eva 31 00:00:56,389 --> 00:00:54,640 so the 32 00:00:59,670 --> 00:00:56,399 middle of last week 33 00:01:01,830 --> 00:00:59,680 the pump on one of our external coolant 34 00:01:04,149 --> 00:01:01,840 loops was shut down as you as you may 35 00:01:07,030 --> 00:01:04,159 recall the iss has two 36 00:01:09,030 --> 00:01:07,040 uh large uh coolant loops on both the 37 00:01:11,429 --> 00:01:09,040 starboard and the port side 38 00:01:14,310 --> 00:01:11,439 uh that we refer to of course as a and b 39 00:01:16,950 --> 00:01:14,320 for lack of creativity and naming 40 00:01:20,789 --> 00:01:18,710 the pumps cool 41 00:01:22,070 --> 00:01:20,799 external orus as well as a heat 42 00:01:24,149 --> 00:01:22,080 exchanger 43 00:01:25,990 --> 00:01:24,159 that exchanges heat with a water loop 44 00:01:28,149 --> 00:01:26,000 inside and cools the internal components 45 00:01:30,950 --> 00:01:28,159 on space station we do that 46 00:01:32,789 --> 00:01:30,960 because ammonia is a highly toxic 47 00:01:35,109 --> 00:01:32,799 substance and we don't want it to be 48 00:01:36,789 --> 00:01:35,119 inside the vehicle and so that's why 49 00:01:38,710 --> 00:01:36,799 we keep ammonia on the outside and the 50 00:01:40,630 --> 00:01:38,720 water on the inside 51 00:01:43,670 --> 00:01:40,640 of course the one area where you have a 52 00:01:45,429 --> 00:01:43,680 risk uh that you could introduce ammonia 53 00:01:47,109 --> 00:01:45,439 into the water loop and therefore 54 00:01:48,550 --> 00:01:47,119 eventually into the 55 00:01:50,149 --> 00:01:48,560 into the environment inside space 56 00:01:53,510 --> 00:01:50,159 station is through the heat exchanger 57 00:01:55,510 --> 00:01:53,520 and so we go to great pains to protect 58 00:01:56,870 --> 00:01:55,520 the case of accidentally freezing the 59 00:01:58,310 --> 00:01:56,880 heat exchanger 60 00:02:00,469 --> 00:01:58,320 freezing the water of course the water 61 00:02:01,990 --> 00:02:00,479 expands and you could fracture the heat 62 00:02:03,910 --> 00:02:02,000 exchanger and let the ammonia get into 63 00:02:05,590 --> 00:02:03,920 the water loop 64 00:02:07,830 --> 00:02:05,600 and so we have a number of systems that 65 00:02:10,070 --> 00:02:07,840 protect us from that 66 00:02:12,390 --> 00:02:10,080 so in the middle of last week at some 67 00:02:14,470 --> 00:02:12,400 point as the as the coolant loop was 68 00:02:16,229 --> 00:02:14,480 trying to manage uh the temperature of 69 00:02:18,150 --> 00:02:16,239 the ammonia 70 00:02:20,869 --> 00:02:18,160 it got to the point where the 71 00:02:22,790 --> 00:02:20,879 temperatures were remaining colder than 72 00:02:23,830 --> 00:02:22,800 it expected and so the loop was shut 73 00:02:25,830 --> 00:02:23,840 down 74 00:02:27,589 --> 00:02:25,840 as expected and the system 75 00:02:29,510 --> 00:02:27,599 reacted the way we wanted the system to 76 00:02:31,670 --> 00:02:29,520 react 77 00:02:32,550 --> 00:02:31,680 and this was caused by 78 00:03:21,750 --> 00:02:32,560 a 79 00:03:23,350 --> 00:03:21,760 depending on 80 00:03:24,789 --> 00:03:23,360 the environment we're in the radiators 81 00:03:26,229 --> 00:03:24,799 where they're at and other loads on 82 00:03:28,309 --> 00:03:26,239 there you can get to the point where the 83 00:03:30,470 --> 00:03:28,319 ammonia itself gets too cold 84 00:03:33,670 --> 00:03:30,480 to enter the heat exchanger 85 00:03:36,630 --> 00:03:33,680 and so um we have spent 86 00:03:38,229 --> 00:03:36,640 uh the last week today's wednesday so 87 00:03:39,910 --> 00:03:38,239 we've spent about the last week trying 88 00:03:42,710 --> 00:03:39,920 to figure out ways to either recover 89 00:03:44,550 --> 00:03:42,720 that that valve or find other ways to 90 00:03:45,830 --> 00:03:44,560 manage the loads on the outside so we 91 00:03:47,110 --> 00:03:45,840 could keep the temperature below 92 00:03:48,949 --> 00:03:47,120 freezing 93 00:03:50,869 --> 00:03:48,959 coming into the heat exchanger but also 94 00:03:52,390 --> 00:03:50,879 at the same time the heat load can't be 95 00:03:55,110 --> 00:03:52,400 too high or it doesn't do the cooling 96 00:03:57,110 --> 00:03:55,120 function it's supposed to provide 97 00:03:59,509 --> 00:03:57,120 the opposite engineering teams have done 98 00:04:01,509 --> 00:03:59,519 just an amazing job of sorting through 99 00:04:03,350 --> 00:04:01,519 all kinds of options to try to recover 100 00:04:05,509 --> 00:04:03,360 the valve and look at other ways to 101 00:04:07,110 --> 00:04:05,519 manage the flow over the last several 102 00:04:09,190 --> 00:04:07,120 days 103 00:04:10,710 --> 00:04:09,200 since we could not figure out a way to 104 00:04:13,030 --> 00:04:10,720 actually repair 105 00:04:15,190 --> 00:04:13,040 the valve or command the valve 106 00:04:17,349 --> 00:04:15,200 to overcome this bias 107 00:04:19,430 --> 00:04:17,359 we started working on a valve an 108 00:04:20,789 --> 00:04:19,440 isolation valve that's just upstream of 109 00:04:22,469 --> 00:04:20,799 the flow control valve and looking to 110 00:04:23,909 --> 00:04:22,479 see if we could use it to manage the 111 00:04:25,350 --> 00:04:23,919 flow 112 00:04:27,990 --> 00:04:25,360 we had tried 113 00:04:30,230 --> 00:04:28,000 to command it from the ground 114 00:04:32,790 --> 00:04:30,240 and due to latency and other factors we 115 00:04:35,430 --> 00:04:32,800 had a hard time managing the flow at the 116 00:04:38,070 --> 00:04:35,440 at the level and the repeatability uh 117 00:04:39,510 --> 00:04:38,080 that was necessary and you noticed 118 00:04:41,510 --> 00:04:39,520 probably notice a couple nights ago the 119 00:04:44,070 --> 00:04:41,520 pump shut down that was part of us 120 00:04:45,909 --> 00:04:44,080 trying to manage loads and and uh and 121 00:04:46,790 --> 00:04:45,919 really struggling with it 122 00:04:49,909 --> 00:04:46,800 um 123 00:04:52,870 --> 00:04:49,919 and so uh the last uh thing that we've 124 00:04:55,110 --> 00:04:52,880 done on board is we created a uh command 125 00:04:57,110 --> 00:04:55,120 patch that we sent on board and so when 126 00:04:58,950 --> 00:04:57,120 the ground commands this patch 127 00:05:01,430 --> 00:04:58,960 uh it's done in such a way basically 128 00:05:03,350 --> 00:05:01,440 that we've taken the latency out of the 129 00:05:05,510 --> 00:05:03,360 out of the commanding sequence 130 00:05:08,870 --> 00:05:05,520 uh and we've we've found that we do have 131 00:05:11,029 --> 00:05:08,880 uh a way to repeatably uh move this 132 00:05:12,150 --> 00:05:11,039 valve around so now we've done that 133 00:05:14,150 --> 00:05:12,160 we're trying to figure out how to 134 00:05:15,350 --> 00:05:14,160 introduce the loads and see if we indeed 135 00:05:17,189 --> 00:05:15,360 can manage 136 00:05:18,950 --> 00:05:17,199 not only the nominal scenarios but the 137 00:05:20,950 --> 00:05:18,960 off nominal scenarios and and the ground 138 00:05:22,870 --> 00:05:20,960 continues to do that 139 00:05:25,270 --> 00:05:22,880 meanwhile as you know we've been 140 00:05:29,510 --> 00:05:25,280 marching towards a launch of the first 141 00:05:31,590 --> 00:05:29,520 crs mission orbital crs mission to iss 142 00:05:32,950 --> 00:05:31,600 that was scheduled to launch here on the 143 00:05:35,110 --> 00:05:32,960 19th 144 00:05:37,189 --> 00:05:35,120 and we had been trying to see if we 145 00:05:38,870 --> 00:05:37,199 could get to the point where we could 146 00:05:41,510 --> 00:05:38,880 reliably manage 147 00:05:43,749 --> 00:05:41,520 the flow of the ammonia so that we could 148 00:05:45,909 --> 00:05:43,759 rely on this loop in the event of the 149 00:05:48,950 --> 00:05:45,919 next worst failure the next worst way of 150 00:05:50,310 --> 00:05:48,960 course would be loss of loop b 151 00:05:53,909 --> 00:05:50,320 and 152 00:05:56,070 --> 00:05:53,919 figure that out we 153 00:05:57,510 --> 00:05:56,080 we carried both scenarios both the 154 00:05:59,029 --> 00:05:57,520 scenario where we let orbital fly 155 00:06:00,230 --> 00:05:59,039 because we've managed the loop to the 156 00:06:01,830 --> 00:06:00,240 point that we 157 00:06:03,510 --> 00:06:01,840 we think we've gotten ourselves to a 158 00:06:05,830 --> 00:06:03,520 point we think we can control the loop 159 00:06:08,309 --> 00:06:05,840 well enough to handle the next failure 160 00:06:10,309 --> 00:06:08,319 and and allowed orbital come up we'd get 161 00:06:12,629 --> 00:06:10,319 on the other side of the of the beta cut 162 00:06:15,909 --> 00:06:12,639 out we have a very high 163 00:06:17,590 --> 00:06:15,919 beta angle period that occurs always 164 00:06:19,590 --> 00:06:17,600 around this time of year 165 00:06:22,150 --> 00:06:19,600 that we that we go into it about 166 00:06:23,510 --> 00:06:22,160 december 30th and so we were trying to 167 00:06:25,270 --> 00:06:23,520 get ourselves to the position where 168 00:06:27,430 --> 00:06:25,280 either we let orbital come up we were 169 00:06:28,950 --> 00:06:27,440 able to control the flow we wait till we 170 00:06:32,309 --> 00:06:28,960 get to the other side and then replace 171 00:06:34,710 --> 00:06:32,319 the pump or if we can't reliably uh 172 00:06:36,469 --> 00:06:34,720 figure out how to control uh the system 173 00:06:38,629 --> 00:06:36,479 then we would go ahead and ask the 174 00:06:40,309 --> 00:06:38,639 orbital folks to stand down and go ahead 175 00:06:41,670 --> 00:06:40,319 and get the eba done 176 00:06:44,309 --> 00:06:41,680 so we sort of reached that point 177 00:06:46,710 --> 00:06:44,319 yesterday yesterday afternoon we 178 00:06:49,189 --> 00:06:46,720 we realized that 179 00:06:50,230 --> 00:06:49,199 if we continue to press 180 00:06:51,830 --> 00:06:50,240 we're starting to get to the point where 181 00:06:53,270 --> 00:06:51,840 we have to pick one path or the other we 182 00:06:55,029 --> 00:06:53,280 have to get the crew ready we have to 183 00:06:58,390 --> 00:06:55,039 get the ground team focused 184 00:07:00,950 --> 00:06:58,400 um and uh and if we focused on a flying 185 00:07:04,230 --> 00:07:00,960 orbital and found uh that we couldn't 186 00:07:05,830 --> 00:07:04,240 control uh the flow even if we thought 187 00:07:07,830 --> 00:07:05,840 we were going to be successful if we 188 00:07:09,510 --> 00:07:07,840 weren't we'd lost the opportunity to do 189 00:07:11,350 --> 00:07:09,520 the eba and change out the pump before 190 00:07:13,350 --> 00:07:11,360 the beta cut out 191 00:07:15,189 --> 00:07:13,360 and so we chose that 192 00:07:16,870 --> 00:07:15,199 that the better part of valor 193 00:07:19,270 --> 00:07:16,880 was to go ahead and 194 00:07:21,270 --> 00:07:19,280 pick a path and so as i said we picked 195 00:07:22,309 --> 00:07:21,280 the path to ask the orbital guys to 196 00:07:24,790 --> 00:07:22,319 stand down 197 00:07:27,510 --> 00:07:24,800 and we'll focus on getting the eva done 198 00:07:31,110 --> 00:07:27,520 so as josh mentioned the first eva will 199 00:07:33,189 --> 00:07:31,120 be on the 21st this saturday 200 00:07:34,469 --> 00:07:33,199 we think it'll take 201 00:07:36,790 --> 00:07:34,479 let's just say it'll take about three 202 00:07:38,790 --> 00:07:36,800 evas could take a little less if we get 203 00:07:41,189 --> 00:07:38,800 lucky with the uh 204 00:07:42,950 --> 00:07:41,199 with the qd's and uh could take a little 205 00:07:44,390 --> 00:07:42,960 more if we're not lucky with qd's or we 206 00:07:45,670 --> 00:07:44,400 have any other kind of challenges that 207 00:07:47,110 --> 00:07:45,680 come up 208 00:07:49,749 --> 00:07:47,120 and so we'll we'll work our way through 209 00:07:52,390 --> 00:07:49,759 there but that the plan shows um the 210 00:07:54,629 --> 00:07:52,400 ebas today shows them every other 211 00:07:56,230 --> 00:07:54,639 day and uh and our plan is to go do the 212 00:07:58,550 --> 00:07:56,240 first eva and then we'll we'll look to 213 00:08:00,390 --> 00:07:58,560 see when the next one needs to happen 214 00:08:02,710 --> 00:08:00,400 based on reacting to what 215 00:08:04,150 --> 00:08:02,720 what may occur on orbit 216 00:08:06,390 --> 00:08:04,160 meanwhile our 217 00:08:08,230 --> 00:08:06,400 our orbital friends are are 218 00:08:10,390 --> 00:08:08,240 rolling back 219 00:08:12,469 --> 00:08:10,400 and they'll get ready for a launch after 220 00:08:14,629 --> 00:08:12,479 the beta cutout we'll have to work that 221 00:08:16,390 --> 00:08:14,639 with the range out of wallops and and 222 00:08:18,150 --> 00:08:16,400 orbital's doing that now and so we we 223 00:08:20,550 --> 00:08:18,160 don't have a launch date yet 224 00:08:22,390 --> 00:08:20,560 uh for our orbital folks but we believe 225 00:08:24,550 --> 00:08:22,400 we'll get the pump changeout done before 226 00:08:26,309 --> 00:08:24,560 the beta cut out and we'd be ready to 227 00:08:27,350 --> 00:08:26,319 accept the orbital guys just as soon as 228 00:08:30,150 --> 00:08:27,360 they uh 229 00:08:32,469 --> 00:08:30,160 we can get the range set up and get them 230 00:08:35,190 --> 00:08:32,479 up to iss 231 00:08:37,110 --> 00:08:35,200 as you know um this pump has been 232 00:08:38,070 --> 00:08:37,120 changed out before this is the starboard 233 00:08:41,990 --> 00:08:38,080 side 234 00:08:43,750 --> 00:08:42,000 back in august of 2010 we did a pump rnr 235 00:08:45,430 --> 00:08:43,760 for a different failure that was 236 00:08:48,470 --> 00:08:45,440 actually a failure of the pump this is a 237 00:08:50,230 --> 00:08:48,480 valve inside the pump module itself 238 00:08:52,310 --> 00:08:50,240 and so this this particular pump's about 239 00:08:55,190 --> 00:08:52,320 three years old 240 00:08:57,670 --> 00:08:55,200 and so this is not an iss aging vehicle 241 00:08:58,949 --> 00:08:57,680 issue it's a it's an unfortunate anomaly 242 00:09:00,870 --> 00:08:58,959 with the system 243 00:09:02,470 --> 00:09:00,880 uh with a relatively 244 00:09:04,150 --> 00:09:02,480 young a pump 245 00:09:05,750 --> 00:09:04,160 uh but it's when you do mean time 246 00:09:07,030 --> 00:09:05,760 between failures it's all about the 247 00:09:08,870 --> 00:09:07,040 averages and so these are the kinds of 248 00:09:10,310 --> 00:09:08,880 things that can happen 249 00:09:11,350 --> 00:09:10,320 so we're prepared to deal with it we 250 00:09:13,670 --> 00:09:11,360 have three 251 00:09:15,269 --> 00:09:13,680 spare pumps on orbit and so we'll take 252 00:09:18,550 --> 00:09:15,279 one of those pumps 253 00:09:21,030 --> 00:09:18,560 also this particular failure mode 254 00:09:23,110 --> 00:09:21,040 is one we think we can overcome with an 255 00:09:24,070 --> 00:09:23,120 external valve and so we'll save this 256 00:09:26,310 --> 00:09:24,080 pump 257 00:09:28,550 --> 00:09:26,320 and and stow it and protect it 258 00:09:31,430 --> 00:09:28,560 throughout the eva 259 00:09:32,790 --> 00:09:31,440 such that in the future we perhaps could 260 00:09:35,990 --> 00:09:32,800 put a uh 261 00:09:37,269 --> 00:09:36,000 an external valve upstream of the inlet 262 00:09:39,590 --> 00:09:37,279 to the pump 263 00:09:41,750 --> 00:09:39,600 and and wire it and control it with that 264 00:09:43,829 --> 00:09:41,760 valve so these are this is a very large 265 00:09:45,910 --> 00:09:43,839 oru i can't bring it in to fix it i 266 00:09:47,509 --> 00:09:45,920 can't return it home to fix it i don't 267 00:09:50,070 --> 00:09:47,519 want to throw it away if i can help it 268 00:09:52,550 --> 00:09:50,080 and and given this failure mode we think 269 00:09:54,310 --> 00:09:52,560 we have a path through the woods that 270 00:09:56,070 --> 00:09:54,320 in the future when 271 00:09:57,430 --> 00:09:56,080 when we need this one that perhaps we 272 00:09:59,509 --> 00:09:57,440 could we could put a valve on the 273 00:10:02,150 --> 00:09:59,519 outside and continue to use it the pump 274 00:10:03,990 --> 00:10:02,160 itself was running very very well very 275 00:10:06,150 --> 00:10:04,000 smooth was doing a good job and and we 276 00:10:08,630 --> 00:10:06,160 think has a lot of life left in it so 277 00:10:10,949 --> 00:10:08,640 that's our our plan forward so i'll stop 278 00:10:15,030 --> 00:10:10,959 there and let dina and allison walk you 279 00:10:19,670 --> 00:10:17,750 okay well i'll start it off um 280 00:10:21,110 --> 00:10:19,680 so first i want to give you kind of the 281 00:10:23,910 --> 00:10:21,120 general lay of the land in terms of our 282 00:10:25,269 --> 00:10:23,920 current um status on board iss 283 00:10:27,590 --> 00:10:25,279 we're a little bit better off than we 284 00:10:29,670 --> 00:10:27,600 were in 2010 because as mr sefertini 285 00:10:32,310 --> 00:10:29,680 mentioned the pump is actually running 286 00:10:34,630 --> 00:10:32,320 so our external 287 00:10:36,949 --> 00:10:34,640 power boxes are getting cooling it's the 288 00:10:40,389 --> 00:10:36,959 fact that we can't integrate with the 289 00:10:42,069 --> 00:10:40,399 internal water loop that is the problem 290 00:10:43,670 --> 00:10:42,079 because of course um 291 00:10:45,990 --> 00:10:43,680 you know we're running cold that's the 292 00:10:48,389 --> 00:10:46,000 issue and so we we want to be able to 293 00:10:49,590 --> 00:10:48,399 close a valve and can't do so and that 294 00:10:51,829 --> 00:10:49,600 that valve 295 00:10:53,269 --> 00:10:51,839 allows cold water cold ammonia to come 296 00:10:55,430 --> 00:10:53,279 in from the radiators and so if you 297 00:10:56,069 --> 00:10:55,440 can't regulate that valve then you end 298 00:10:57,990 --> 00:10:56,079 up 299 00:10:59,750 --> 00:10:58,000 in a scenario where you don't want to 300 00:11:01,110 --> 00:10:59,760 uh allow your water loop to come in 301 00:11:03,110 --> 00:11:01,120 contact so 302 00:11:04,630 --> 00:11:03,120 um anyway so as you've mentioned we've 303 00:11:06,550 --> 00:11:04,640 been looking at other valves and we're 304 00:11:08,870 --> 00:11:06,560 uh are on console team right now and 305 00:11:10,389 --> 00:11:08,880 mission control has been working uh with 306 00:11:11,990 --> 00:11:10,399 hand in hand with engineering folks to 307 00:11:14,310 --> 00:11:12,000 try to come up with different ways to 308 00:11:16,389 --> 00:11:14,320 try to command it 309 00:11:18,230 --> 00:11:16,399 and our software folks have put a patch 310 00:11:21,269 --> 00:11:18,240 on board that allows for 311 00:11:23,269 --> 00:11:21,279 finer control of that upstream valve the 312 00:11:24,069 --> 00:11:23,279 isolation valve that he was talking 313 00:11:25,750 --> 00:11:24,079 about 314 00:11:27,750 --> 00:11:25,760 so 315 00:11:29,990 --> 00:11:27,760 you know in the meantime our goal has 316 00:11:32,870 --> 00:11:30,000 been to try to get some of the 317 00:11:33,990 --> 00:11:32,880 heat rejected out onto that external 318 00:11:36,150 --> 00:11:34,000 water loop 319 00:11:38,150 --> 00:11:36,160 and see how much load it can take and 320 00:11:39,670 --> 00:11:38,160 can we actually regulate it within the 321 00:11:41,509 --> 00:11:39,680 right temperature so you're adding heat 322 00:11:42,790 --> 00:11:41,519 load to a loop and it's a little bit 323 00:11:44,790 --> 00:11:42,800 experimental 324 00:11:45,910 --> 00:11:44,800 so we're not there yet but i'll just say 325 00:11:47,750 --> 00:11:45,920 you know our teams have been working 326 00:11:49,829 --> 00:11:47,760 very hard and are getting incrementally 327 00:11:51,509 --> 00:11:49,839 a little bit better each time but 328 00:11:53,910 --> 00:11:51,519 unfortunately we're not at a fully 329 00:11:55,269 --> 00:11:53,920 recovered kind of state 330 00:11:56,790 --> 00:11:55,279 so um 331 00:11:57,990 --> 00:11:56,800 one of the you know we talked about 332 00:12:00,069 --> 00:11:58,000 orbital and that could have been an 333 00:12:03,350 --> 00:12:00,079 impact to try to fly in that particular 334 00:12:04,550 --> 00:12:03,360 situation uh and uh but 335 00:12:06,069 --> 00:12:04,560 kind of one of the things we're focused 336 00:12:07,829 --> 00:12:06,079 on right now is what would happen if we 337 00:12:09,990 --> 00:12:07,839 had an additional failure 338 00:12:11,190 --> 00:12:10,000 so for example uh if flute bravo were to 339 00:12:13,990 --> 00:12:11,200 go down 340 00:12:16,870 --> 00:12:14,000 then we would um have kind of this 341 00:12:18,790 --> 00:12:16,880 state quasi state of usefulness of the 342 00:12:20,629 --> 00:12:18,800 loop alpha and then we'd also have loop 343 00:12:22,629 --> 00:12:20,639 bravo that went down so we have a group 344 00:12:23,590 --> 00:12:22,639 of people called the next worst failure 345 00:12:25,750 --> 00:12:23,600 team 346 00:12:27,990 --> 00:12:25,760 and they just try to get us in a good 347 00:12:29,350 --> 00:12:28,000 posture to make sure that we have 348 00:12:30,550 --> 00:12:29,360 everything configured just in case 349 00:12:31,670 --> 00:12:30,560 something went down and make sure we 350 00:12:33,430 --> 00:12:31,680 have a procedure of what we're going to 351 00:12:34,790 --> 00:12:33,440 go run and that team has really come 352 00:12:36,790 --> 00:12:34,800 done a good job of figuring out what 353 00:12:38,790 --> 00:12:36,800 we're going to go do so for example you 354 00:12:41,030 --> 00:12:38,800 can cool some of your internal avionics 355 00:12:42,949 --> 00:12:41,040 equipment using fans uh we can hook up 356 00:12:45,350 --> 00:12:42,959 jumpers and that kind of thing so we 357 00:12:46,870 --> 00:12:45,360 have we know what we would go do uh if 358 00:12:48,150 --> 00:12:46,880 we were to get into that scenario but 359 00:12:51,190 --> 00:12:48,160 the goal at that point would be to go 360 00:12:52,389 --> 00:12:51,200 eva and fix one of the two loops so 361 00:12:55,110 --> 00:12:52,399 you know here we are we're trucking 362 00:12:56,949 --> 00:12:55,120 basically towards the eva uh and i think 363 00:12:58,870 --> 00:12:56,959 um you know this is this will be a good 364 00:13:01,430 --> 00:12:58,880 direction to go to get us into uh more 365 00:13:02,150 --> 00:13:01,440 of a nominal state of affairs 366 00:13:04,150 --> 00:13:02,160 so 367 00:13:07,269 --> 00:13:04,160 just to kind of briefly talk about um 368 00:13:10,230 --> 00:13:07,279 eva in general you know the last cva uh 369 00:13:13,030 --> 00:13:10,240 was uh eva 23 and of course we did have 370 00:13:14,629 --> 00:13:13,040 the water entering into luca's helmet in 371 00:13:15,990 --> 00:13:14,639 that eva and you can imagine that after 372 00:13:19,269 --> 00:13:16,000 that we 373 00:13:20,710 --> 00:13:19,279 kicked off a team to go take a look at 374 00:13:23,190 --> 00:13:20,720 how we can you know what is the root 375 00:13:24,949 --> 00:13:23,200 cause what was the problem that we saw 376 00:13:26,870 --> 00:13:24,959 and try to figure out what we would do 377 00:13:28,870 --> 00:13:26,880 if we uh saw it again 378 00:13:31,110 --> 00:13:28,880 and so in terms of the root cause that 379 00:13:31,910 --> 00:13:31,120 investigation is still ongoing so you 380 00:13:32,710 --> 00:13:31,920 know 381 00:13:37,590 --> 00:13:32,720 we 382 00:13:39,110 --> 00:13:37,600 the emu suit guys they really wanted to 383 00:13:40,790 --> 00:13:39,120 get hardware on the ground let's just 384 00:13:41,829 --> 00:13:40,800 try to see what we can do to get stuff 385 00:13:43,829 --> 00:13:41,839 on the ground 386 00:13:46,629 --> 00:13:43,839 we tried to look at changing out items 387 00:13:48,150 --> 00:13:46,639 on board um on you know inside the emu 388 00:13:49,670 --> 00:13:48,160 we changed out a really critical valve 389 00:13:51,590 --> 00:13:49,680 and filter and determined that was not 390 00:13:54,550 --> 00:13:51,600 the problem and we changed out 391 00:13:57,110 --> 00:13:54,560 a fan pump separator unit inside luca's 392 00:13:58,870 --> 00:13:57,120 suit and we had a new one and installed 393 00:14:00,310 --> 00:13:58,880 that and then we did not we were not 394 00:14:02,629 --> 00:14:00,320 able to repeat the water and helmet 395 00:14:04,629 --> 00:14:02,639 situation on that particular suit so we 396 00:14:06,870 --> 00:14:04,639 know that when we brought down the fan 397 00:14:08,629 --> 00:14:06,880 pump separator in november that root 398 00:14:10,470 --> 00:14:08,639 cause investigation continued and those 399 00:14:12,069 --> 00:14:10,480 folks took a 400 00:14:14,230 --> 00:14:12,079 detailed look at that 401 00:14:16,389 --> 00:14:14,240 particular unit they determined that 402 00:14:19,030 --> 00:14:16,399 they did find contamination had plugged 403 00:14:21,110 --> 00:14:19,040 the tiny holes inside that unit inside 404 00:14:23,030 --> 00:14:21,120 the water separator portion of that unit 405 00:14:24,550 --> 00:14:23,040 and the clogging of those holes would 406 00:14:26,069 --> 00:14:24,560 cause water to back up and basically 407 00:14:27,269 --> 00:14:26,079 enter the fan and then get into the vent 408 00:14:29,910 --> 00:14:27,279 loop and would be able to enter the 409 00:14:31,509 --> 00:14:29,920 helmet so that's not the root cause to 410 00:14:33,990 --> 00:14:31,519 figure out what the 411 00:14:35,829 --> 00:14:34,000 contamination is and unfortunately it's 412 00:14:37,430 --> 00:14:35,839 a pretty complicated water chemistry 413 00:14:38,949 --> 00:14:37,440 problem and there was not one particular 414 00:14:39,910 --> 00:14:38,959 constituent that you could take a look 415 00:14:41,350 --> 00:14:39,920 at and say 416 00:14:42,470 --> 00:14:41,360 that's the problem right there on the 417 00:14:44,389 --> 00:14:42,480 suit 418 00:14:46,069 --> 00:14:44,399 and so the team has still been trying to 419 00:14:48,470 --> 00:14:46,079 get more data on the ground um 420 00:14:49,990 --> 00:14:48,480 specifically we have a couple of filters 421 00:14:51,910 --> 00:14:50,000 uh well we have several filters that 422 00:14:54,629 --> 00:14:51,920 have made it onto the ground we 423 00:14:57,030 --> 00:14:54,639 periodically scrub the suits using an 424 00:14:58,550 --> 00:14:57,040 external line to try to keep them clean 425 00:15:00,310 --> 00:14:58,560 and we were able to retrieve some of 426 00:15:01,910 --> 00:15:00,320 those filters and bring them down and 427 00:15:03,189 --> 00:15:01,920 well we've essentially 428 00:15:05,750 --> 00:15:03,199 taken a look at the filters that we 429 00:15:08,150 --> 00:15:05,760 already had and noticed that 430 00:15:09,509 --> 00:15:08,160 one of them was saturated with 431 00:15:12,069 --> 00:15:09,519 particulate 432 00:15:13,829 --> 00:15:12,079 the interesting thing being it might be 433 00:15:14,550 --> 00:15:13,839 some sort of detergent kind of material 434 00:15:17,430 --> 00:15:14,560 but 435 00:15:19,030 --> 00:15:17,440 the the um the filter itself was full 436 00:15:21,430 --> 00:15:19,040 and so the the bad part of that is that 437 00:15:23,430 --> 00:15:21,440 it was kicking out um some 438 00:15:25,030 --> 00:15:23,440 some particles that might combine 439 00:15:27,350 --> 00:15:25,040 especially in something like a water 440 00:15:28,870 --> 00:15:27,360 separator or something like a centrifuge 441 00:15:31,269 --> 00:15:28,880 and create a lot of precipitate which 442 00:15:33,030 --> 00:15:31,279 would cause our contamination issue so 443 00:15:35,670 --> 00:15:33,040 we're still really 444 00:15:36,710 --> 00:15:35,680 we have not at all come to conclusion on 445 00:15:38,230 --> 00:15:36,720 which 446 00:15:39,670 --> 00:15:38,240 what kind of contamination or what the 447 00:15:41,189 --> 00:15:39,680 source might be so i don't want to 448 00:15:42,710 --> 00:15:41,199 mislead you but i'm telling you that we 449 00:15:44,870 --> 00:15:42,720 did we have done quite a bit of research 450 00:15:46,949 --> 00:15:44,880 on this and we 451 00:15:48,550 --> 00:15:46,959 have decided to um 452 00:15:50,230 --> 00:15:48,560 take take a look at using luca's suit 453 00:15:52,310 --> 00:15:50,240 again because it has the fresh fan pump 454 00:15:54,069 --> 00:15:52,320 separator in it and that's what we spent 455 00:15:56,710 --> 00:15:54,079 overnight doing is trying to get that 456 00:15:58,150 --> 00:15:56,720 suit ready to to go back out so 457 00:16:00,389 --> 00:15:58,160 mike hopkins will be wearing that 458 00:16:02,230 --> 00:16:00,399 particular suit and 459 00:16:04,710 --> 00:16:02,240 we think that that's an extremely clean 460 00:16:06,629 --> 00:16:04,720 suit and it's ready to go so 461 00:16:08,790 --> 00:16:06,639 i believe that we've completed either 462 00:16:10,790 --> 00:16:08,800 most or all of our preparations on that 463 00:16:11,590 --> 00:16:10,800 we did do kind of a return to service 464 00:16:13,509 --> 00:16:11,600 check 465 00:16:15,189 --> 00:16:13,519 after the fan pump stuff was changed out 466 00:16:16,870 --> 00:16:15,199 we have um 467 00:16:18,790 --> 00:16:16,880 high confidence that 468 00:16:20,150 --> 00:16:18,800 it's you know essentially just like a 469 00:16:21,749 --> 00:16:20,160 unit that was 470 00:16:23,110 --> 00:16:21,759 refurbished on the ground so the crew 471 00:16:24,470 --> 00:16:23,120 did a really good job changing it out 472 00:16:26,230 --> 00:16:24,480 and then we did a full return to service 473 00:16:28,870 --> 00:16:26,240 check on the suit 474 00:16:29,749 --> 00:16:28,880 and uh are ready to go with those suits 475 00:16:30,710 --> 00:16:29,759 so 476 00:16:32,710 --> 00:16:30,720 um 477 00:16:35,110 --> 00:16:32,720 let's see in terms of the evas that 478 00:16:37,350 --> 00:16:35,120 we're about to go do 479 00:16:39,990 --> 00:16:37,360 as he mentioned we've got um 480 00:16:42,629 --> 00:16:40,000 two to four evas that we're anticipating 481 00:16:44,629 --> 00:16:42,639 and you know for for two evas we would 482 00:16:46,470 --> 00:16:44,639 have to have a really really good day uh 483 00:16:48,790 --> 00:16:46,480 in the first eba and allison will 484 00:16:51,749 --> 00:16:48,800 probably talk about that but um you know 485 00:16:52,870 --> 00:16:51,759 of course we could run into issues um if 486 00:16:54,629 --> 00:16:52,880 but right now i would just say we're 487 00:16:57,350 --> 00:16:54,639 nominally planning for three so that 488 00:16:58,790 --> 00:16:57,360 would be our plan um 489 00:17:05,590 --> 00:16:58,800 the 490 00:17:06,789 --> 00:17:05,600 at a very high fidelity state where 491 00:17:08,309 --> 00:17:06,799 we're basically putting the final 492 00:17:09,110 --> 00:17:08,319 procedures on board 493 00:17:10,309 --> 00:17:09,120 uh 494 00:17:12,150 --> 00:17:10,319 in some ways we were lucky that we had 495 00:17:13,829 --> 00:17:12,160 the 2010 incident because that's really 496 00:17:14,870 --> 00:17:13,839 prepared us we have already lessons 497 00:17:16,789 --> 00:17:14,880 learned all of that's already been 498 00:17:19,110 --> 00:17:16,799 incorporated and we had a team called 499 00:17:21,510 --> 00:17:19,120 the failure i think it's response 500 00:17:23,829 --> 00:17:21,520 assessment team the frat team and that 501 00:17:24,630 --> 00:17:23,839 team had already put all those lessons 502 00:17:26,630 --> 00:17:24,640 learned 503 00:17:28,230 --> 00:17:26,640 into all of our documentation 504 00:17:29,510 --> 00:17:28,240 and we've had a chance to get together 505 00:17:30,789 --> 00:17:29,520 with that team and 506 00:17:32,950 --> 00:17:30,799 figure out 507 00:17:34,789 --> 00:17:32,960 what else is still open so a lot of that 508 00:17:35,909 --> 00:17:34,799 has been analysis um that our 509 00:17:38,230 --> 00:17:35,919 engineering counterparts have been 510 00:17:40,070 --> 00:17:38,240 performing but from the ops side of the 511 00:17:41,590 --> 00:17:40,080 house those procedures were really well 512 00:17:43,270 --> 00:17:41,600 potted so we're looking you know we were 513 00:17:45,110 --> 00:17:43,280 already postured very well the crew was 514 00:17:47,590 --> 00:17:45,120 able to start looking at those uh the 515 00:17:48,630 --> 00:17:47,600 day after we said that we might go eva 516 00:17:50,549 --> 00:17:48,640 so 517 00:17:53,350 --> 00:17:50,559 um i feel like we're at a very mature 518 00:17:55,350 --> 00:17:53,360 state in terms of being ready to go eva 519 00:17:57,029 --> 00:17:55,360 you know i looked around the room today 520 00:17:58,950 --> 00:17:57,039 and said what are people worried about 521 00:18:01,029 --> 00:17:58,960 and really um there was not much to be 522 00:18:02,549 --> 00:18:01,039 said so i think we're ready to go out 523 00:18:03,430 --> 00:18:02,559 the door on saturday 524 00:18:04,789 --> 00:18:03,440 and 525 00:18:05,510 --> 00:18:04,799 our team is 526 00:18:08,950 --> 00:18:05,520 as 527 00:18:10,630 --> 00:18:08,960 show-stopping issues to be working right 528 00:18:11,990 --> 00:18:10,640 now so 529 00:18:13,430 --> 00:18:12,000 so with that i'm going to hand it over 530 00:18:14,870 --> 00:18:13,440 allison 531 00:18:16,549 --> 00:18:14,880 all right thanks dina 532 00:18:18,710 --> 00:18:16,559 okay so to briefly mention a little bit 533 00:18:20,470 --> 00:18:18,720 about the water mitigation uh steps that 534 00:18:22,710 --> 00:18:20,480 that dina talked about we have made some 535 00:18:24,390 --> 00:18:22,720 modifications to the suit so in addition 536 00:18:26,950 --> 00:18:24,400 to training that we have given to the 537 00:18:28,789 --> 00:18:26,960 crew on how to respond in the event that 538 00:18:30,630 --> 00:18:28,799 they have water in the helmet again we 539 00:18:31,830 --> 00:18:30,640 have upgraded two pieces of hardware 540 00:18:33,830 --> 00:18:31,840 that we are going to be installing in 541 00:18:36,150 --> 00:18:33,840 the suits so this right here is a helmet 542 00:18:38,150 --> 00:18:36,160 absorption pad and this is basically 543 00:18:40,150 --> 00:18:38,160 it's it's a modified absorbent pad that 544 00:18:42,150 --> 00:18:40,160 is designed to be installed on the back 545 00:18:43,750 --> 00:18:42,160 of the crew member's helmet and so this 546 00:18:45,430 --> 00:18:43,760 is our first line of defense that if 547 00:18:46,789 --> 00:18:45,440 water were to enter the helmet again 548 00:18:48,549 --> 00:18:46,799 even though we don't expect it if water 549 00:18:50,630 --> 00:18:48,559 were to enter the helmet again this is 550 00:18:53,110 --> 00:18:50,640 designed to hold anywhere between 600 551 00:18:55,029 --> 00:18:53,120 and 800 milliliters of water 552 00:18:56,470 --> 00:18:55,039 we have included nominal checks in our 553 00:18:58,630 --> 00:18:56,480 procedure where we normally have the 554 00:19:00,070 --> 00:18:58,640 crew inspect their gloves to make sure 555 00:19:02,230 --> 00:19:00,080 they don't have any damage in the gloves 556 00:19:03,909 --> 00:19:02,240 we've now also added steps for them to 557 00:19:06,390 --> 00:19:03,919 check the helmet absorption pad or the 558 00:19:08,070 --> 00:19:06,400 hap to verify it's not squishy that's 559 00:19:10,230 --> 00:19:08,080 the technical term that we're using to 560 00:19:12,230 --> 00:19:10,240 define whether we think uh water has 561 00:19:14,070 --> 00:19:12,240 entered the helmet so 562 00:19:15,270 --> 00:19:14,080 typically we've we've done some testing 563 00:19:17,430 --> 00:19:15,280 quite a bit of testing on the ground 564 00:19:18,950 --> 00:19:17,440 with astronauts to verify when you lean 565 00:19:20,710 --> 00:19:18,960 back when can you first sense 566 00:19:23,190 --> 00:19:20,720 squishiness and that's roughly around 567 00:19:24,630 --> 00:19:23,200 the 200 milliliter mark so if we have 568 00:19:25,990 --> 00:19:24,640 anywhere close to 200 milliliters of 569 00:19:27,510 --> 00:19:26,000 water in this suit that's definitely 570 00:19:29,190 --> 00:19:27,520 much more than we ever expect to be in 571 00:19:31,190 --> 00:19:29,200 the suit so as soon as the crew member 572 00:19:33,430 --> 00:19:31,200 senses squishiness in his hat that's a 573 00:19:35,350 --> 00:19:33,440 sign that there is a problem in the emu 574 00:19:37,270 --> 00:19:35,360 and it's it's time to come inside so 575 00:19:39,110 --> 00:19:37,280 they do have that response and a new we 576 00:19:41,510 --> 00:19:39,120 created a new emergency cuff checklist 577 00:19:43,190 --> 00:19:41,520 page for the water in the emu so as soon 578 00:19:45,510 --> 00:19:43,200 as they either see water in their helmet 579 00:19:47,669 --> 00:19:45,520 or sense water in the hat it's time to 580 00:19:49,669 --> 00:19:47,679 to start terminating the eva 581 00:19:52,789 --> 00:19:49,679 the other piece of mitigation hardware 582 00:19:54,789 --> 00:19:52,799 that we put into the suit is the snorkel 583 00:19:57,110 --> 00:19:54,799 so this is a modified piece of hardware 584 00:19:58,950 --> 00:19:57,120 it's a water line vent tube which is a 585 00:20:01,270 --> 00:19:58,960 component inside the emu that we had the 586 00:20:03,430 --> 00:20:01,280 crew fabricate these on orbit so they 587 00:20:05,029 --> 00:20:03,440 basically cut apart 588 00:20:07,190 --> 00:20:05,039 the plastic tubing on this waterline 589 00:20:09,190 --> 00:20:07,200 vent tube and then attach hook velcro on 590 00:20:11,909 --> 00:20:09,200 one side and pile velcro on the other 591 00:20:14,149 --> 00:20:11,919 and the idea is that this snorkel is now 592 00:20:16,070 --> 00:20:14,159 installed inside the suit with the crew 593 00:20:17,669 --> 00:20:16,080 member between his between his water 594 00:20:19,430 --> 00:20:17,679 restraint bag and the front side of his 595 00:20:21,190 --> 00:20:19,440 suit so this is your 596 00:20:22,710 --> 00:20:21,200 this is your your last resort that if 597 00:20:24,149 --> 00:20:22,720 water is encroaching your face is 598 00:20:26,149 --> 00:20:24,159 similar to happen with luke on the last 599 00:20:28,549 --> 00:20:26,159 eva that the crew member can lean down 600 00:20:30,870 --> 00:20:28,559 and use this to breathe uh to receive 601 00:20:32,870 --> 00:20:30,880 you know fresh oxygen down near his 602 00:20:34,230 --> 00:20:32,880 midsection so those are the two two 603 00:20:36,230 --> 00:20:34,240 pieces of hardware we had the crew 604 00:20:38,310 --> 00:20:36,240 fabricate two of these snorkels a couple 605 00:20:40,789 --> 00:20:38,320 days ago and these helmet absorption 606 00:20:42,470 --> 00:20:40,799 pads we were fortunate enough to launch 607 00:20:44,710 --> 00:20:42,480 quite a few we have 24 on board we were 608 00:20:46,310 --> 00:20:44,720 able to launch those on the last soyuz 609 00:20:48,070 --> 00:20:46,320 as well as on the orbital demo mission 610 00:20:50,149 --> 00:20:48,080 so we're in good shape as far as that 611 00:20:51,990 --> 00:20:50,159 goes um so with that we can go ahead and 612 00:20:53,990 --> 00:20:52,000 start talking about the details of the 613 00:20:55,350 --> 00:20:54,000 space walks so if we can show the first 614 00:20:57,110 --> 00:20:55,360 graphic 615 00:20:59,190 --> 00:20:57,120 so there are space walking crew members 616 00:21:01,190 --> 00:20:59,200 we have rick mastracchio he comes to us 617 00:21:03,510 --> 00:21:01,200 with six space walks under his belt so 618 00:21:05,669 --> 00:21:03,520 he's a very experienced space walker he 619 00:21:07,990 --> 00:21:05,679 will serve the ev-1 or lead spacewalk 620 00:21:10,390 --> 00:21:08,000 officer or lead spacewalker role for 621 00:21:11,669 --> 00:21:10,400 eva's one and two 622 00:21:13,750 --> 00:21:11,679 and on the right side you see mike 623 00:21:15,510 --> 00:21:13,760 hopkins he is a rookie spacewalker but 624 00:21:17,669 --> 00:21:15,520 very excited to go out the door he will 625 00:21:19,830 --> 00:21:17,679 be the ev2 for eva's one and two and 626 00:21:21,510 --> 00:21:19,840 then he'll take the lead ev1 role on 627 00:21:23,029 --> 00:21:21,520 eva3 628 00:21:24,710 --> 00:21:23,039 so then on the inside 629 00:21:26,630 --> 00:21:24,720 go to the next graphic on the inside 630 00:21:29,029 --> 00:21:26,640 we'll have koichi wakata who was flying 631 00:21:31,190 --> 00:21:29,039 the ssrms or the space station robotic 632 00:21:33,590 --> 00:21:31,200 arm he will be as you'll see in the 633 00:21:35,350 --> 00:21:33,600 video one of the crew members spends a 634 00:21:37,510 --> 00:21:35,360 large majority of all three of the evas 635 00:21:39,750 --> 00:21:37,520 on the arm so koichi will be tied into 636 00:21:42,789 --> 00:21:39,760 this and he'll be flying the arm 637 00:21:44,230 --> 00:21:42,799 so the next graphic 638 00:21:46,230 --> 00:21:44,240 shows the overviews of the three 639 00:21:48,230 --> 00:21:46,240 spacewalks so broad strokes what we plan 640 00:21:51,110 --> 00:21:48,240 on doing on the first the first 641 00:21:52,710 --> 00:21:51,120 spacewalk is focused on de-integrating 642 00:21:54,630 --> 00:21:52,720 the failed pump module so that that 643 00:21:56,710 --> 00:21:54,640 includes demating the fluid quick 644 00:21:59,350 --> 00:21:56,720 disconnects installing a pump module 645 00:22:01,270 --> 00:21:59,360 jumper box which allows us to have fluid 646 00:22:02,870 --> 00:22:01,280 flow between the rest of the tcs the 647 00:22:04,950 --> 00:22:02,880 thermal control system with the 648 00:22:06,230 --> 00:22:04,960 accumulators in the system 649 00:22:08,230 --> 00:22:06,240 and then demating the electrical 650 00:22:09,909 --> 00:22:08,240 connectors on that failed pump module 651 00:22:11,510 --> 00:22:09,919 and then we also spend a little bit of 652 00:22:13,190 --> 00:22:11,520 time working on the spare pump module 653 00:22:15,830 --> 00:22:13,200 which includes releasing some 654 00:22:17,430 --> 00:22:15,840 multi-layer insulation on the second eva 655 00:22:19,350 --> 00:22:17,440 we're focused on removing the failed 656 00:22:21,510 --> 00:22:19,360 pump module from the truss and then 657 00:22:23,350 --> 00:22:21,520 temporarily stowing it on the poa or the 658 00:22:25,669 --> 00:22:23,360 payload oru accommodation tempstow 659 00:22:27,909 --> 00:22:25,679 location and then we work at the end of 660 00:22:31,029 --> 00:22:27,919 the eva on releasing the spare pump 661 00:22:32,789 --> 00:22:31,039 module uh from the esp3 carrier on the 662 00:22:34,630 --> 00:22:32,799 outboard side of s3 663 00:22:36,470 --> 00:22:34,640 and then we fly that over to the s1 664 00:22:38,230 --> 00:22:36,480 location and install that into the trust 665 00:22:39,669 --> 00:22:38,240 and we plan on hooking up only the bolts 666 00:22:40,549 --> 00:22:39,679 and the electrical connectors on this 667 00:22:44,549 --> 00:22:40,559 eva 668 00:22:46,390 --> 00:22:44,559 will complete that spare pump module 669 00:22:49,510 --> 00:22:46,400 installation which includes mating the 670 00:22:51,270 --> 00:22:49,520 the four fluid lines and then relocating 671 00:22:54,630 --> 00:22:51,280 the failed pump module from its tempsto 672 00:22:57,270 --> 00:22:54,640 location out to the esp the esp3 673 00:22:58,950 --> 00:22:57,280 location where the failed came from 674 00:23:01,110 --> 00:22:58,960 so with that we can go ahead and get 675 00:23:04,149 --> 00:23:01,120 started with the videos and we'll talk 676 00:23:05,430 --> 00:23:04,159 through the tasks 677 00:23:07,270 --> 00:23:05,440 so if we could start the videos all 678 00:23:09,029 --> 00:23:07,280 right so on the first first spacewalk 679 00:23:10,950 --> 00:23:09,039 the crew members egress the joint 680 00:23:14,149 --> 00:23:10,960 airlock and they make their way up to 681 00:23:15,830 --> 00:23:14,159 the center of the s-1 truss 682 00:23:17,669 --> 00:23:15,840 mike hopkins mike will be uh the free 683 00:23:19,590 --> 00:23:17,679 float crew member rick will ingress the 684 00:23:20,549 --> 00:23:19,600 arm koichi will fly him up to the work 685 00:23:22,549 --> 00:23:20,559 site 686 00:23:25,029 --> 00:23:22,559 and then the two crew members will spend 687 00:23:27,110 --> 00:23:25,039 some time demating those four 688 00:23:29,029 --> 00:23:27,120 fluid quick disconnects which are 689 00:23:30,549 --> 00:23:29,039 illuminated there 690 00:23:32,390 --> 00:23:30,559 so a quick overview of the interfaces on 691 00:23:33,909 --> 00:23:32,400 the pump module you have four fluid 692 00:23:35,590 --> 00:23:33,919 quick disconnects three of them are one 693 00:23:38,149 --> 00:23:35,600 and a half inch size one is a quarter 694 00:23:39,669 --> 00:23:38,159 size you have five electrical connectors 695 00:23:41,669 --> 00:23:39,679 and then you also have four fasteners 696 00:23:43,830 --> 00:23:41,679 which are 5 8 inch fasteners which are 697 00:23:46,070 --> 00:23:43,840 what the primary fasteners that hold the 698 00:23:47,350 --> 00:23:46,080 pump module into the truss so here we 699 00:23:49,190 --> 00:23:47,360 are fortunate enough on the partial 700 00:23:51,350 --> 00:23:49,200 gravity simulator to have doug wheelock 701 00:23:52,870 --> 00:23:51,360 and tracy caldwell dyson help us create 702 00:23:54,789 --> 00:23:52,880 a training video about lessons they 703 00:23:56,149 --> 00:23:54,799 learned during the last pump module r r 704 00:23:57,590 --> 00:23:56,159 so we were able to film this training 705 00:23:59,269 --> 00:23:57,600 video just a few days ago and we got 706 00:24:01,110 --> 00:23:59,279 that uplink to the crew so they are able 707 00:24:02,470 --> 00:24:01,120 to learn of any gotchas 708 00:24:04,630 --> 00:24:02,480 once those four fluid lines are 709 00:24:06,470 --> 00:24:04,640 disconnected they'll then work to 710 00:24:07,990 --> 00:24:06,480 install the half inch and the one and a 711 00:24:10,070 --> 00:24:08,000 half inch fluid lines to this pump 712 00:24:12,310 --> 00:24:10,080 module jumper box as i mentioned this is 713 00:24:14,310 --> 00:24:12,320 what allows ammonia to flow another the 714 00:24:15,590 --> 00:24:14,320 pump module's out allows monia to have 715 00:24:16,950 --> 00:24:15,600 access to the 716 00:24:19,190 --> 00:24:16,960 accumulators and the nitrogen and 717 00:24:21,110 --> 00:24:19,200 ammonia tanks to prevent liquid lock 718 00:24:22,149 --> 00:24:21,120 so that's what we spend most of eva 1 719 00:24:24,390 --> 00:24:22,159 doing 720 00:24:25,830 --> 00:24:24,400 on eva 2 the focus is getting the failed 721 00:24:27,269 --> 00:24:25,840 pump module out of the trust and the new 722 00:24:29,190 --> 00:24:27,279 one in the trust so there you can see 723 00:24:30,870 --> 00:24:29,200 the loop a pump module on the s1 truss 724 00:24:32,470 --> 00:24:30,880 on the right side and as mike mentioned 725 00:24:35,430 --> 00:24:32,480 we have three spares we're shooting for 726 00:24:36,950 --> 00:24:35,440 the esp3 spare pump module to install in 727 00:24:38,710 --> 00:24:36,960 its new home 728 00:24:40,710 --> 00:24:38,720 right outside the airlock mike will pick 729 00:24:42,549 --> 00:24:40,720 up the adjustable grapple bar from the 730 00:24:43,990 --> 00:24:42,559 esp2 carrier 731 00:24:45,430 --> 00:24:44,000 he will then translate up to the truss 732 00:24:47,190 --> 00:24:45,440 and rick will be on the arm and they'll 733 00:24:48,789 --> 00:24:47,200 work to release the four fasteners that 734 00:24:50,230 --> 00:24:48,799 are holding the pump module on the truss 735 00:24:52,630 --> 00:24:50,240 then they'll slowly slide the pump 736 00:24:54,310 --> 00:24:52,640 module out of the truss about halfway 737 00:24:56,549 --> 00:24:54,320 giving them access to the install 738 00:24:58,149 --> 00:24:56,559 location for the adjustable grapple bar 739 00:25:00,710 --> 00:24:58,159 and it's this grapple bar that allows 740 00:25:02,870 --> 00:25:00,720 the pump module to be temporarily stowed 741 00:25:04,870 --> 00:25:02,880 between evas 742 00:25:07,110 --> 00:25:04,880 so once the pump module is free of the 743 00:25:08,950 --> 00:25:07,120 trust they'll give koichi the go to 744 00:25:10,789 --> 00:25:08,960 relocate the arm 745 00:25:12,789 --> 00:25:10,799 and rick over to the poa or the 746 00:25:14,870 --> 00:25:12,799 temporary stow location 747 00:25:16,789 --> 00:25:14,880 for this pump module mike said this is 748 00:25:18,470 --> 00:25:16,799 our desire is to keep this pump module 749 00:25:19,750 --> 00:25:18,480 as a viable spare so that we can perform 750 00:25:21,350 --> 00:25:19,760 additional maintenance on it in the 751 00:25:23,350 --> 00:25:21,360 future 752 00:25:25,430 --> 00:25:23,360 so once they have the spare pump module 753 00:25:27,190 --> 00:25:25,440 stowed on the poa 754 00:25:29,190 --> 00:25:27,200 they'll then work to translate over to 755 00:25:30,310 --> 00:25:29,200 esp3 where the new pump module is 756 00:25:32,950 --> 00:25:30,320 located 757 00:25:35,669 --> 00:25:32,960 they'll release that from the carrier 758 00:25:37,830 --> 00:25:35,679 and then fly back over to the truss to 759 00:25:40,549 --> 00:25:37,840 install that new pump module in the same 760 00:25:41,750 --> 00:25:40,559 location where we removed the failed 761 00:25:43,350 --> 00:25:41,760 as you can see there's quite a bit of 762 00:25:45,029 --> 00:25:43,360 our maneuvers throughout all of these 763 00:25:47,669 --> 00:25:45,039 evas so i'm sure koichi will be getting 764 00:25:51,590 --> 00:25:49,430 so they'll work together to slowly guide 765 00:25:52,789 --> 00:25:51,600 the pump module into the truss 766 00:25:54,549 --> 00:25:52,799 and then they'll attach the four 767 00:25:56,549 --> 00:25:54,559 fasteners that hold it in place and then 768 00:25:58,230 --> 00:25:56,559 mate the electrical connectors which 769 00:26:00,310 --> 00:25:58,240 will give us good insight into seeing if 770 00:26:20,549 --> 00:26:00,320 we have a viable spare in this pump 771 00:26:24,789 --> 00:26:22,630 helmet video and as well as cameras on 772 00:26:26,789 --> 00:26:24,799 the arm so the third spacewalk is 773 00:26:28,710 --> 00:26:26,799 focused on getting the fluid lines 774 00:26:30,630 --> 00:26:28,720 hooked up to the pump module those four 775 00:26:32,710 --> 00:26:30,640 fluid lines hooked up to the pump module 776 00:26:34,630 --> 00:26:32,720 and then working on relocating the 777 00:26:37,269 --> 00:26:34,640 failed pump module from its temporary 778 00:26:40,230 --> 00:26:37,279 stowage location over to the esp3 779 00:26:42,310 --> 00:26:40,240 location where we retrieved the spare 780 00:26:43,909 --> 00:26:42,320 on eva 3 we'll be swapping rolls so mike 781 00:26:45,350 --> 00:26:43,919 will actually be the crew member in the 782 00:26:47,590 --> 00:26:45,360 arm this time and rick will be the free 783 00:26:49,590 --> 00:26:47,600 float crew member as koichi is flying 784 00:26:52,070 --> 00:26:49,600 mike over with the failed pump module 785 00:26:54,630 --> 00:26:52,080 rick will spend some time at the s1 pump 786 00:26:55,669 --> 00:26:54,640 module install location verifying that 787 00:26:57,029 --> 00:26:55,679 he has 788 00:27:00,390 --> 00:26:57,039 everything buttoned up and that we've 789 00:27:03,510 --> 00:27:00,400 cleared the mt translation corridor 790 00:27:04,830 --> 00:27:03,520 once they're at the esp3 worksite 791 00:27:07,909 --> 00:27:04,840 mic will 792 00:27:09,750 --> 00:27:07,919 slowly commands to koichi to bring him 793 00:27:11,110 --> 00:27:09,760 into the work site 794 00:27:12,870 --> 00:27:11,120 then they will the two crew members will 795 00:27:14,310 --> 00:27:12,880 work together to release the adjustable 796 00:27:15,990 --> 00:27:14,320 grapple bar 797 00:27:18,630 --> 00:27:16,000 and then they will work on rotating the 798 00:27:20,950 --> 00:27:18,640 pump module 180 degrees to allow them to 799 00:27:23,350 --> 00:27:20,960 install it into the rails 800 00:27:24,870 --> 00:27:23,360 on the esp3 worksite once they install 801 00:27:26,549 --> 00:27:24,880 it they'll attach the four fasteners 802 00:27:28,310 --> 00:27:26,559 that hold it in place make some 803 00:27:30,310 --> 00:27:28,320 electrical connectors to provide heater 804 00:27:32,310 --> 00:27:30,320 power to this failed unit and then 805 00:27:35,029 --> 00:27:32,320 install some multi-layer insulation over 806 00:27:36,950 --> 00:27:35,039 it to protect it michael then worked to 807 00:27:39,669 --> 00:27:36,960 retrieve the adjustable grapple bar from 808 00:27:41,830 --> 00:27:39,679 a temp stow location 809 00:27:44,789 --> 00:27:41,840 and koichi will then begin maneuvering 810 00:27:46,950 --> 00:27:44,799 him from the outboard location on s3 all 811 00:27:48,389 --> 00:27:46,960 the way back to the esp-2 carrier on the 812 00:27:49,909 --> 00:27:48,399 airlock 813 00:27:52,070 --> 00:27:49,919 during this time rick will be cleaning 814 00:27:53,590 --> 00:27:52,080 up the work site which includes 815 00:27:54,950 --> 00:27:53,600 packing up the tool bags that they 816 00:27:57,110 --> 00:27:54,960 brought out with them and then heading 817 00:27:58,549 --> 00:27:57,120 back towards the airlock once at the 818 00:28:00,389 --> 00:27:58,559 esp2 819 00:28:02,149 --> 00:28:00,399 location 820 00:28:04,149 --> 00:28:02,159 mike will install the adjustable grapple 821 00:28:05,830 --> 00:28:04,159 bar onto the fhrc or the flex hose 822 00:28:07,990 --> 00:28:05,840 rotary coupler which is its temp stow 823 00:28:09,669 --> 00:28:08,000 location once complete with that he will 824 00:28:11,590 --> 00:28:09,679 work on egressing the arm and removing 825 00:28:13,110 --> 00:28:11,600 the foot restraint and then the two crew 826 00:28:15,269 --> 00:28:13,120 members will head inside and that will 827 00:28:17,510 --> 00:28:15,279 complete the eva 828 00:28:18,710 --> 00:28:17,520 and josh i think that's all i have okay 829 00:28:19,750 --> 00:28:18,720 let's take some questions we'll start 830 00:28:22,710 --> 00:28:19,760 here in houston then we'll go to the 831 00:28:24,389 --> 00:28:22,720 phone lines i'll start with mark crowe 832 00:28:25,909 --> 00:28:24,399 thanks uh this is probably a minor 833 00:28:28,470 --> 00:28:25,919 question in the whole picture but could 834 00:28:31,590 --> 00:28:28,480 you just talk about the uh the beta data 835 00:28:36,230 --> 00:28:31,600 angle and how that's influencing the the 836 00:28:41,990 --> 00:28:39,669 there is both uh both evas and and 837 00:28:44,470 --> 00:28:42,000 birthing operations uh have constraints 838 00:28:47,190 --> 00:28:44,480 that make it difficult to do in fact we 839 00:28:50,389 --> 00:28:47,200 we avoid uh birthing all together above 840 00:28:52,310 --> 00:28:50,399 60 degrees beta 841 00:28:54,070 --> 00:28:52,320 the constraint's really 65 the ground 842 00:28:55,430 --> 00:28:54,080 group is 60 but we're headed to a pretty 843 00:28:56,950 --> 00:28:55,440 high beta 844 00:28:58,389 --> 00:28:56,960 and you can get yourself into conditions 845 00:28:59,909 --> 00:28:58,399 where you didn't make it the first day 846 00:29:02,870 --> 00:28:59,919 and then suddenly you're you're deep 847 00:29:04,070 --> 00:29:02,880 into beta high baited territory so 848 00:29:05,830 --> 00:29:04,080 we try to 849 00:29:07,510 --> 00:29:05,840 avoid birthings around a high beta 850 00:29:09,110 --> 00:29:07,520 period dockings or birthing around high 851 00:29:10,950 --> 00:29:09,120 debated periods 852 00:29:12,230 --> 00:29:10,960 we looked at doing the eda during high 853 00:29:14,230 --> 00:29:12,240 beta there's a lot of challenges 854 00:29:16,870 --> 00:29:14,240 associated with that both for cooling 855 00:29:19,029 --> 00:29:16,880 the iss and meeting the needs for the 856 00:29:21,190 --> 00:29:19,039 the emu crew itself 857 00:29:23,350 --> 00:29:21,200 and while we could probably work it out 858 00:29:25,909 --> 00:29:23,360 and make it happen given the short time 859 00:29:28,789 --> 00:29:25,919 we have we we'd prefer to stay on this 860 00:29:31,190 --> 00:29:28,799 side of the beta cutout 861 00:29:33,830 --> 00:29:31,200 i'm sorry uh mark caro for aviation week 862 00:29:35,029 --> 00:29:33,840 could you just frame that period as you 863 00:29:38,549 --> 00:29:35,039 as you said 864 00:29:41,269 --> 00:29:38,559 we go above 60 on december 30th and i 865 00:29:44,870 --> 00:29:41,279 believe we come below on the 9th of 866 00:29:45,750 --> 00:29:44,880 january it's about like that 867 00:29:46,549 --> 00:29:45,760 okay 868 00:29:51,830 --> 00:29:46,559 jim 869 00:29:53,430 --> 00:29:51,840 looking at the cause root cause work 870 00:29:55,430 --> 00:29:53,440 still going on 871 00:29:57,350 --> 00:29:55,440 are you looking at any kind of root 872 00:29:59,269 --> 00:29:57,360 cause such as the airlock heat exchanger 873 00:30:00,870 --> 00:29:59,279 that would be an issue of contaminating 874 00:30:01,750 --> 00:30:00,880 the other suits as well as this in other 875 00:30:03,510 --> 00:30:01,760 words 876 00:30:05,830 --> 00:30:03,520 if the other suits are contaminated the 877 00:30:07,190 --> 00:30:05,840 same way as lucas was 878 00:30:08,950 --> 00:30:07,200 could you tell 879 00:30:11,110 --> 00:30:08,960 by inspecting on orbit 880 00:30:13,909 --> 00:30:11,120 and are you 881 00:30:15,909 --> 00:30:13,919 what are you doing to 882 00:30:17,510 --> 00:30:15,919 lower that possibility 883 00:30:18,230 --> 00:30:17,520 so um 884 00:30:19,669 --> 00:30:18,240 the 885 00:30:20,950 --> 00:30:19,679 airlock heat exchanger of course is one 886 00:30:21,909 --> 00:30:20,960 of the components that we'd be looking 887 00:30:22,710 --> 00:30:21,919 at 888 00:30:25,029 --> 00:30:22,720 and 889 00:30:26,870 --> 00:30:25,039 what basically i'll just say as i 890 00:30:29,269 --> 00:30:26,880 mentioned the water chemistry has 891 00:30:31,110 --> 00:30:29,279 been very complicated and in fact you 892 00:30:32,549 --> 00:30:31,120 know whole days have been spent with a 893 00:30:35,269 --> 00:30:32,559 lot of water chemists trying to figure 894 00:30:36,710 --> 00:30:35,279 this out so we have not yet said it's 895 00:30:38,230 --> 00:30:36,720 something that for sure would be fleet 896 00:30:40,549 --> 00:30:38,240 wide and in fact it could be something 897 00:30:42,070 --> 00:30:40,559 that's a one-off um but 898 00:30:44,149 --> 00:30:42,080 we've looked at everything from 899 00:30:45,990 --> 00:30:44,159 constituents that are inside the suits 900 00:30:47,990 --> 00:30:46,000 to the airlock and we have found 901 00:30:49,590 --> 00:30:48,000 different types of components that might 902 00:30:50,950 --> 00:30:49,600 lead us well it could be an air-like 903 00:30:51,909 --> 00:30:50,960 heat exchanger thing or maybe it 904 00:30:53,510 --> 00:30:51,919 wouldn't 905 00:30:55,750 --> 00:30:53,520 but in terms of 906 00:30:56,870 --> 00:30:55,760 what our scrubbing and you know taking a 907 00:30:58,310 --> 00:30:56,880 look at all the different filters and 908 00:31:00,789 --> 00:30:58,320 everything that we've done we think that 909 00:31:02,470 --> 00:31:00,799 we're taking out two clean suits to the 910 00:31:05,750 --> 00:31:02,480 best of our knowledge not that we 911 00:31:07,110 --> 00:31:05,760 wouldn't um you know we can't rule out 912 00:31:08,630 --> 00:31:07,120 until we've just determined the root 913 00:31:09,990 --> 00:31:08,640 cause uh 914 00:31:11,190 --> 00:31:10,000 that that's you know we can't rule out 915 00:31:12,950 --> 00:31:11,200 that we would have water and helmet 916 00:31:14,310 --> 00:31:12,960 again um but that's what the ops 917 00:31:16,549 --> 00:31:14,320 mitigations are for and what the new 918 00:31:18,310 --> 00:31:16,559 hardware is for um but we're still 919 00:31:20,310 --> 00:31:18,320 really working on what the root cause is 920 00:31:23,909 --> 00:31:20,320 so i'll i just say that that's kind of 921 00:31:26,950 --> 00:31:25,110 are there any 922 00:31:28,710 --> 00:31:26,960 are the issues of potential water flow 923 00:31:30,230 --> 00:31:28,720 in the helmet constraining you for 924 00:31:33,430 --> 00:31:30,240 example for a crewmen on the end of the 925 00:31:34,389 --> 00:31:33,440 ssrms you have how you change your ssrms 926 00:31:36,470 --> 00:31:34,399 truman 927 00:31:38,389 --> 00:31:36,480 procedures because of any concerns about 928 00:31:41,509 --> 00:31:38,399 getting back yeah i'll answer that 929 00:31:44,310 --> 00:31:41,519 particular one i think um so we have had 930 00:31:46,389 --> 00:31:44,320 very so originally when this all 931 00:31:47,990 --> 00:31:46,399 broke post aba 23 we did look 932 00:31:49,590 --> 00:31:48,000 generically at what it would take to get 933 00:31:50,950 --> 00:31:49,600 somebody who's on the arm if he had 934 00:31:52,789 --> 00:31:50,960 water and helmet 935 00:31:54,549 --> 00:31:52,799 even if he's carrying a large 936 00:31:56,549 --> 00:31:54,559 pump module for example 937 00:31:58,549 --> 00:31:56,559 and um you know the other crew member 938 00:32:01,190 --> 00:31:58,559 can come and assist and help to tie down 939 00:32:03,029 --> 00:32:01,200 the pump module or if for example let's 940 00:32:05,430 --> 00:32:03,039 say that the unaffected crew member is 941 00:32:06,310 --> 00:32:05,440 on the arm then the other person you 942 00:32:07,990 --> 00:32:06,320 know 943 00:32:09,590 --> 00:32:08,000 on the trust if he needs assistance then 944 00:32:11,669 --> 00:32:09,600 we would tie down tie all that down but 945 00:32:14,389 --> 00:32:11,679 we did a very specific analysis for this 946 00:32:16,310 --> 00:32:14,399 particular eva and we also looked very 947 00:32:18,710 --> 00:32:16,320 carefully at the arm trajectories to 948 00:32:20,230 --> 00:32:18,720 make sure that we had good trajectories 949 00:32:21,750 --> 00:32:20,240 that would allow us to get back to the 950 00:32:23,509 --> 00:32:21,760 airlock as soon as possible should we 951 00:32:26,149 --> 00:32:23,519 need to and we even did a neutral 952 00:32:27,750 --> 00:32:26,159 buoyancy laboratory um you know we did 953 00:32:29,190 --> 00:32:27,760 some neutral buoyancy laboratory work to 954 00:32:31,110 --> 00:32:29,200 make sure that we could be as efficient 955 00:32:33,190 --> 00:32:31,120 as possible in terms of our tie-down 956 00:32:34,549 --> 00:32:33,200 should we have this eventuality but 957 00:32:36,310 --> 00:32:34,559 that's all just part of saying you know 958 00:32:37,590 --> 00:32:36,320 hey we've looked at this from a safety 959 00:32:39,669 --> 00:32:37,600 perspective 960 00:32:40,830 --> 00:32:39,679 and we have all the mitigations in place 961 00:32:44,870 --> 00:32:40,840 for 962 00:32:46,710 --> 00:32:44,880 that okay gina i have two questions um 963 00:32:48,310 --> 00:32:46,720 mike what have you learned about this 964 00:32:50,149 --> 00:32:48,320 you've got a phrase about this just 965 00:32:51,830 --> 00:32:50,159 another day of learning how to operate a 966 00:32:54,230 --> 00:32:51,840 space station what have you learned from 967 00:32:55,909 --> 00:32:54,240 this event 968 00:32:58,230 --> 00:32:55,919 okay so you talk about the suit or the 969 00:32:59,909 --> 00:32:58,240 ball the pump 970 00:33:03,430 --> 00:32:59,919 uh well 971 00:33:05,190 --> 00:33:03,440 uh you know from uh this is this is part 972 00:33:07,269 --> 00:33:05,200 of um 973 00:33:08,950 --> 00:33:07,279 how things happen in space and what can 974 00:33:11,350 --> 00:33:08,960 possibly uh 975 00:33:12,789 --> 00:33:11,360 fail in in which way and so 976 00:33:15,190 --> 00:33:12,799 what we have learned we've been 977 00:33:17,590 --> 00:33:15,200 operating for 15 years on iss right and 978 00:33:21,269 --> 00:33:19,509 when we first started space station the 979 00:33:23,750 --> 00:33:21,279 philosophy was you had a failure you 980 00:33:25,750 --> 00:33:23,760 changed out an oru and you you sent it 981 00:33:27,430 --> 00:33:25,760 home and you forgot about it right you 982 00:33:28,950 --> 00:33:27,440 let the team operate the way you need to 983 00:33:31,669 --> 00:33:28,960 on orbit 984 00:33:33,190 --> 00:33:31,679 logistics is not a consistent system 985 00:33:35,669 --> 00:33:33,200 that's always there for you and crew 986 00:33:36,950 --> 00:33:35,679 time is very constrained 987 00:33:39,269 --> 00:33:36,960 and so 988 00:33:40,470 --> 00:33:39,279 over the years we've changed our mindset 989 00:33:42,389 --> 00:33:40,480 when you have a failure you try to 990 00:33:43,669 --> 00:33:42,399 understand the failure and instead of 991 00:33:45,269 --> 00:33:43,679 the first thing you do is try to just 992 00:33:47,029 --> 00:33:45,279 change it out because it takes crew time 993 00:33:48,789 --> 00:33:47,039 and it's waste to spare you say can i 994 00:33:50,310 --> 00:33:48,799 figure out how to work around it so this 995 00:33:52,789 --> 00:33:50,320 is we've learned a lot with this 996 00:33:54,630 --> 00:33:52,799 particular system we never imagined that 997 00:33:56,389 --> 00:33:54,640 we could figure out how to how to 998 00:33:57,830 --> 00:33:56,399 control a loop without a flow control 999 00:33:59,750 --> 00:33:57,840 valve if you look at the data the thing 1000 00:34:01,830 --> 00:33:59,760 is moving all the time 1001 00:34:03,990 --> 00:34:01,840 the isolation valve was made to be 1002 00:34:05,830 --> 00:34:04,000 opened and closed 1003 00:34:08,230 --> 00:34:05,840 very seldom 1004 00:34:09,669 --> 00:34:08,240 and so you the design wasn't such that 1005 00:34:10,869 --> 00:34:09,679 you'd sit here and move it in little 1006 00:34:13,349 --> 00:34:10,879 increments 1007 00:34:15,430 --> 00:34:13,359 to try to find the sweet spot and so 1008 00:34:17,430 --> 00:34:15,440 um in this particular case i tell you i 1009 00:34:19,270 --> 00:34:17,440 think we've learned a lot about 1010 00:34:21,430 --> 00:34:19,280 how to manage a system we hadn't ever 1011 00:34:23,669 --> 00:34:21,440 intended to manage this way 1012 00:34:26,149 --> 00:34:23,679 if i'd had a lot more days before the 1013 00:34:27,510 --> 00:34:26,159 orbital guys flew i'm starting to get 1014 00:34:28,550 --> 00:34:27,520 the sense we probably could figure out 1015 00:34:29,829 --> 00:34:28,560 how to operate this thing for an 1016 00:34:30,710 --> 00:34:29,839 extended period of time that's why i 1017 00:34:35,190 --> 00:34:30,720 can't 1018 00:34:35,909 --> 00:34:35,200 but i'm kind of getting that that sense 1019 00:34:38,629 --> 00:34:35,919 so 1020 00:34:40,310 --> 00:34:38,639 um this is one of just many failures we 1021 00:34:42,310 --> 00:34:40,320 have a lot of different 1022 00:34:43,430 --> 00:34:42,320 types of little failures and we 1023 00:34:46,069 --> 00:34:43,440 we learn 1024 00:34:47,589 --> 00:34:46,079 what our options are and um and we 1025 00:34:49,430 --> 00:34:47,599 wouldn't have imagined this as being an 1026 00:34:50,869 --> 00:34:49,440 option when we when we've talked about 1027 00:34:52,550 --> 00:34:50,879 flow control valve barriers we'd just 1028 00:34:54,069 --> 00:34:52,560 assume that eventually you've got to 1029 00:34:56,149 --> 00:34:54,079 change it out just like a punk failure 1030 00:34:57,349 --> 00:34:56,159 but then it happens and you go wow 1031 00:34:59,190 --> 00:34:57,359 changing a pump out tomorrow is going to 1032 00:35:01,109 --> 00:34:59,200 be really hard in this case we had the 1033 00:35:02,790 --> 00:35:01,119 suit anomaly we still haven't completely 1034 00:35:04,390 --> 00:35:02,800 sorted out in our heads so we would just 1035 00:35:06,069 --> 00:35:04,400 assume not rush off to change it up we 1036 00:35:07,430 --> 00:35:06,079 could help it 1037 00:35:09,349 --> 00:35:07,440 and so it kind of 1038 00:35:11,349 --> 00:35:09,359 kind of gave us the impetus to look even 1039 00:35:12,950 --> 00:35:11,359 further so 1040 00:35:15,030 --> 00:35:12,960 you know it's just another another 1041 00:35:17,990 --> 00:35:15,040 opportunity for us to figure out how to 1042 00:35:18,790 --> 00:35:18,000 how to operate this vehicle and and 1043 00:35:21,109 --> 00:35:18,800 not 1044 00:35:23,670 --> 00:35:21,119 the way it was originally intended 1045 00:35:25,910 --> 00:35:23,680 uh but certainly in a safe manner 1046 00:35:29,270 --> 00:35:25,920 perhaps preserve spares and in the 1047 00:35:33,349 --> 00:35:30,950 allison i look at the parts you've got 1048 00:35:34,950 --> 00:35:33,359 there those parts you had on the space 1049 00:35:37,750 --> 00:35:34,960 station or were you what were the 1050 00:35:39,030 --> 00:35:37,760 constraints for you and your team trying 1051 00:35:41,109 --> 00:35:39,040 to figure out how to come up with those 1052 00:35:43,190 --> 00:35:41,119 workarounds and those solutions right so 1053 00:35:45,430 --> 00:35:43,200 that so the snorkel as i mentioned this 1054 00:35:46,790 --> 00:35:45,440 is actually a 1055 00:35:48,470 --> 00:35:46,800 part that we can change out on the 1056 00:35:50,310 --> 00:35:48,480 spacesuit it's part of a waterline vent 1057 00:35:52,630 --> 00:35:50,320 tube assembly which is actually what 1058 00:35:54,870 --> 00:35:52,640 runs from the backpack of the suit and 1059 00:35:55,990 --> 00:35:54,880 it's what hooks up to the liquid cooling 1060 00:35:57,589 --> 00:35:56,000 and ventilation garment that the crew 1061 00:35:59,750 --> 00:35:57,599 members wear so normally these tubes 1062 00:36:01,510 --> 00:35:59,760 will be passing water that's providing 1063 00:36:03,589 --> 00:36:01,520 cooling around the crew member's body so 1064 00:36:06,069 --> 00:36:03,599 some smart engineers on the ground were 1065 00:36:07,829 --> 00:36:06,079 able to uh figure out hey this looks 1066 00:36:09,750 --> 00:36:07,839 it's a similar diameter to a snorkel 1067 00:36:11,670 --> 00:36:09,760 that you have for scuba diving so what 1068 00:36:14,069 --> 00:36:11,680 if we're able to each waterline vent 1069 00:36:15,829 --> 00:36:14,079 tube assembly has two of these tubes so 1070 00:36:17,589 --> 00:36:15,839 by just sacrificing one of our our 1071 00:36:19,270 --> 00:36:17,599 spares on board they were able to come 1072 00:36:21,190 --> 00:36:19,280 up with a way to 1073 00:36:22,390 --> 00:36:21,200 just snip off the ends and then file it 1074 00:36:24,470 --> 00:36:22,400 so that it's not rough in the crew 1075 00:36:25,990 --> 00:36:24,480 member's mouth and then apply velcro we 1076 00:36:27,829 --> 00:36:26,000 already have velcro inside the suit 1077 00:36:29,109 --> 00:36:27,839 which is what holds the drink bag up to 1078 00:36:31,190 --> 00:36:29,119 the front part of the suit so they were 1079 00:36:33,349 --> 00:36:31,200 able to come up with this ingenious idea 1080 00:36:35,670 --> 00:36:33,359 to to hold it in place as far as the 1081 00:36:38,150 --> 00:36:35,680 helmet absorption pad goes we looked at 1082 00:36:40,870 --> 00:36:38,160 ways of modifying a potentially onboard 1083 00:36:42,550 --> 00:36:40,880 modifying the maximum absorbency garment 1084 00:36:44,230 --> 00:36:42,560 that the crew members wear but that 1085 00:36:46,310 --> 00:36:44,240 created quite a bit of fod it was kind 1086 00:36:47,750 --> 00:36:46,320 of a mess to cut this apart 1087 00:36:49,829 --> 00:36:47,760 so we were fortunate enough to be able 1088 00:36:51,349 --> 00:36:49,839 to to quickly turn these around and 1089 00:36:53,030 --> 00:36:51,359 fabricate units that we were able to 1090 00:36:54,470 --> 00:36:53,040 launch as i mentioned on the orbital 1091 00:36:55,829 --> 00:36:54,480 demo mission as well as on the soyuz 1092 00:36:58,550 --> 00:36:55,839 mission so thankfully we already had 1093 00:36:59,990 --> 00:36:58,560 these on board but but both of these you 1094 00:37:03,589 --> 00:37:00,000 know the invention of these came out of 1095 00:37:04,870 --> 00:37:03,599 the issues that we had on eva23 1096 00:37:05,910 --> 00:37:04,880 all right robert 1097 00:37:09,510 --> 00:37:05,920 hi robert perelman with 1098 00:37:11,990 --> 00:37:09,520 collectivebase.com um or allison uh with 1099 00:37:14,550 --> 00:37:12,000 regards to the number of ebas 1100 00:37:16,310 --> 00:37:14,560 where do you see the potential hold ups 1101 00:37:18,069 --> 00:37:16,320 or where do you see the potential 1102 00:37:19,270 --> 00:37:18,079 ability to get ahead so that you might 1103 00:37:22,390 --> 00:37:19,280 have just 1104 00:37:25,750 --> 00:37:22,400 you might just need two epa's 1105 00:37:27,829 --> 00:37:25,760 all right so so the way let me let me uh 1106 00:37:29,829 --> 00:37:27,839 ruffle through my papers here 1107 00:37:31,910 --> 00:37:29,839 so the way the timelines are laid out uh 1108 00:37:33,829 --> 00:37:31,920 to currently show us in three evas is 1109 00:37:35,589 --> 00:37:33,839 based on the difficulties that we had 1110 00:37:37,030 --> 00:37:35,599 with the fluid quick disconnects during 1111 00:37:38,790 --> 00:37:37,040 the previous time that we changed out 1112 00:37:40,630 --> 00:37:38,800 this pump so we have become a lot 1113 00:37:42,710 --> 00:37:40,640 smarter on how to operate these cuties 1114 00:37:44,710 --> 00:37:42,720 especially in off nominal situations so 1115 00:37:46,550 --> 00:37:44,720 in the event you know fingers crossed 1116 00:37:48,310 --> 00:37:46,560 these cuties go very smoothly and we're 1117 00:37:49,829 --> 00:37:48,320 able with no issue to close and demate 1118 00:37:52,069 --> 00:37:49,839 these qd's and we have enough 1119 00:37:54,630 --> 00:37:52,079 consumables at the end of our eva it 1120 00:37:56,230 --> 00:37:54,640 allows us to pull the removal of the 1121 00:37:59,030 --> 00:37:56,240 failed pump module and the temp still on 1122 00:38:00,870 --> 00:37:59,040 the poa up to the first dva so then that 1123 00:38:03,829 --> 00:38:00,880 puts us in great posture to on the 1124 00:38:06,150 --> 00:38:03,839 second eva be able to just go fly over 1125 00:38:07,990 --> 00:38:06,160 grab the spare from esp3 install it in 1126 00:38:09,910 --> 00:38:08,000 the truss hook up the fluid lines 1127 00:38:12,550 --> 00:38:09,920 integrate that into the system and then 1128 00:38:14,390 --> 00:38:12,560 button up the work site within two evas 1129 00:38:17,030 --> 00:38:14,400 that den then does leave the failed pump 1130 00:38:19,430 --> 00:38:17,040 module on the poa on the temporary stow 1131 00:38:21,109 --> 00:38:19,440 location until a future eva but keep in 1132 00:38:23,430 --> 00:38:21,119 mind that we did have uh during the 1133 00:38:25,190 --> 00:38:23,440 previous evas on in 2010 we did leave 1134 00:38:26,630 --> 00:38:25,200 the failed pump module on the poa for i 1135 00:38:28,550 --> 00:38:26,640 think it was about six months before we 1136 00:38:30,470 --> 00:38:28,560 relocated it so we still have plenty of 1137 00:38:32,150 --> 00:38:30,480 time to keep that as a viable spare if 1138 00:38:35,030 --> 00:38:32,160 it were to remain on the poa instead of 1139 00:38:36,550 --> 00:38:35,040 being relocated to the carrier on esp3 1140 00:38:40,230 --> 00:38:36,560 so those are the potential ways to get 1141 00:38:43,190 --> 00:38:41,430 from mike 1142 00:38:45,270 --> 00:38:43,200 you mentioned that this pump is going to 1143 00:38:47,349 --> 00:38:45,280 be potentially repaired but if that 1144 00:38:49,190 --> 00:38:47,359 wasn't the case or you couldn't do that 1145 00:38:51,270 --> 00:38:49,200 do you still have the ability to launch 1146 00:38:53,349 --> 00:38:51,280 a new pump module do you have bundles on 1147 00:38:54,950 --> 00:38:53,359 the ground leading you know the one that 1148 00:38:56,550 --> 00:38:54,960 failed actually we're repairing and 1149 00:38:58,710 --> 00:38:56,560 we're and we're going to have to do 1150 00:39:00,790 --> 00:38:58,720 another build of pumps just to 1151 00:39:02,470 --> 00:39:00,800 just for the life of iss in general over 1152 00:39:05,109 --> 00:39:02,480 time you eventually have to build a new 1153 00:39:07,430 --> 00:39:05,119 set of pumps but uh yeah the the cargo 1154 00:39:09,910 --> 00:39:07,440 capabilities we have today can carry 1155 00:39:11,190 --> 00:39:09,920 every oru we have in the fleet we can 1156 00:39:13,670 --> 00:39:11,200 take to orbit 1157 00:39:16,470 --> 00:39:13,680 there are a couple of spares we hadn't 1158 00:39:18,950 --> 00:39:16,480 had not intended to build or didn't 1159 00:39:20,069 --> 00:39:18,960 think we would need one was the solar 1160 00:39:22,470 --> 00:39:20,079 array 1161 00:39:24,790 --> 00:39:22,480 and the other is the big 1162 00:39:26,950 --> 00:39:24,800 the big radiators 1163 00:39:28,790 --> 00:39:26,960 if we if we had to spare either those 1164 00:39:30,710 --> 00:39:28,800 two we'd have to figure out another 1165 00:39:32,230 --> 00:39:30,720 another path than th than the existing 1166 00:39:34,550 --> 00:39:32,240 systems we use today 1167 00:39:36,230 --> 00:39:34,560 but other than that all the orus we we 1168 00:39:38,950 --> 00:39:36,240 have and expect to change out on orbit 1169 00:39:40,630 --> 00:39:38,960 we can carry to orbit 1170 00:39:41,990 --> 00:39:40,640 okay let's go to the phone lines let's 1171 00:39:46,230 --> 00:39:42,000 start with elizabeth howell with 1172 00:39:49,990 --> 00:39:47,750 hello can you provide some more 1173 00:39:54,470 --> 00:39:50,000 specifics on which systems have been 1174 00:39:57,990 --> 00:39:56,069 did you catch that which systems have 1175 00:39:58,870 --> 00:39:58,000 been affected by the this pump issue 1176 00:39:59,990 --> 00:39:58,880 yeah 1177 00:40:02,069 --> 00:40:00,000 uh 1178 00:40:04,069 --> 00:40:02,079 well i'll just say um 1179 00:40:05,510 --> 00:40:04,079 you know one of our um 1180 00:40:09,750 --> 00:40:05,520 the the main issue is that we can't 1181 00:40:12,069 --> 00:40:09,760 really uh integrate the node two um 1182 00:40:14,470 --> 00:40:12,079 heat exchanger and it affects the 1183 00:40:16,870 --> 00:40:14,480 systems in node two columbus and the gym 1184 00:40:19,990 --> 00:40:16,880 right now and that's where we do a lot 1185 00:40:21,829 --> 00:40:20,000 of our science is in those modules so 1186 00:40:23,750 --> 00:40:21,839 it's really affecting our ability to do 1187 00:40:25,349 --> 00:40:23,760 science and then 1188 00:40:27,349 --> 00:40:25,359 additionally um 1189 00:40:29,589 --> 00:40:27,359 there are other systems are dependent 1190 00:40:32,069 --> 00:40:29,599 solely on loop bravo so that opens us up 1191 00:40:33,990 --> 00:40:32,079 to kind of a window of failures that 1192 00:40:35,349 --> 00:40:34,000 would not be um that would not be good 1193 00:40:37,589 --> 00:40:35,359 basically we were in a loss of 1194 00:40:39,349 --> 00:40:37,599 redundancy situation for the others in 1195 00:40:40,710 --> 00:40:39,359 terms of the external systems like i 1196 00:40:43,190 --> 00:40:40,720 said we're in a better posture than in 1197 00:40:45,910 --> 00:40:43,200 2010 because we have a lot of boxes 1198 00:40:48,710 --> 00:40:45,920 externally that um are continuing to be 1199 00:40:50,150 --> 00:40:48,720 cooled so we're we're not in as bad a 1200 00:40:52,710 --> 00:40:50,160 situation in terms of our critical 1201 00:40:56,309 --> 00:40:52,720 systems being down right now so really 1202 00:40:59,670 --> 00:40:56,319 i'd say mostly our impacts are to um 1203 00:41:01,030 --> 00:40:59,680 to the uh payloads and uh the fact that 1204 00:41:02,390 --> 00:41:01,040 we might have had an issue flying 1205 00:41:04,390 --> 00:41:02,400 orbital which we would have had to 1206 00:41:06,069 --> 00:41:04,400 jumper around and that kind of thing 1207 00:41:08,150 --> 00:41:06,079 for the most part we're operating uh 1208 00:41:09,510 --> 00:41:08,160 nominally from a crew perspective minus 1209 00:41:11,829 --> 00:41:09,520 the payloads which is of course our 1210 00:41:15,750 --> 00:41:11,839 primary mission so that it is a big 1211 00:41:15,760 --> 00:41:21,589 okay let's go to miriamkramerspace.com 1212 00:41:25,589 --> 00:41:23,829 hi thanks for taking my question um yeah 1213 00:41:28,230 --> 00:41:25,599 i have a kind of a similar question to 1214 00:41:29,349 --> 00:41:28,240 elizabeth um i'm actually wondering if 1215 00:41:31,430 --> 00:41:29,359 any 1216 00:41:34,390 --> 00:41:31,440 potential science has been lost because 1217 00:41:35,430 --> 00:41:34,400 of this or if there's still time to 1218 00:41:37,750 --> 00:41:35,440 um 1219 00:41:39,829 --> 00:41:37,760 bounce back from it so to have any 1220 00:41:42,790 --> 00:41:39,839 experiments been lost and and will there 1221 00:41:45,190 --> 00:41:42,800 be potentially make up for it thanks 1222 00:41:47,910 --> 00:41:45,200 uh today no we haven't lost any research 1223 00:41:49,910 --> 00:41:47,920 we've had to manage what research we do 1224 00:41:53,190 --> 00:41:49,920 based on what dina was saying 1225 00:41:55,829 --> 00:41:53,200 we have had some periods of having the 1226 00:41:57,670 --> 00:41:55,839 the freeze the freezer we call the melfi 1227 00:41:59,510 --> 00:41:57,680 that keeps our existing samples cold 1228 00:42:01,190 --> 00:41:59,520 we've had to have it off 1229 00:42:02,390 --> 00:42:01,200 for extended periods of time which it's 1230 00:42:04,230 --> 00:42:02,400 built to do 1231 00:42:06,790 --> 00:42:04,240 it's built to go 1232 00:42:08,470 --> 00:42:06,800 about eight hours without the 1233 00:42:09,990 --> 00:42:08,480 without any power and still keep the 1234 00:42:12,230 --> 00:42:10,000 components at the temperature they need 1235 00:42:13,589 --> 00:42:12,240 to be kept at of course on the flip side 1236 00:42:15,109 --> 00:42:13,599 then when you turn it back on you've got 1237 00:42:17,109 --> 00:42:15,119 to run it for about twice as much time 1238 00:42:19,030 --> 00:42:17,119 to regain that capability to to get it 1239 00:42:20,870 --> 00:42:19,040 back up to temperature 1240 00:42:22,230 --> 00:42:20,880 so the team's been managing that because 1241 00:42:23,910 --> 00:42:22,240 that's one of the components we've had 1242 00:42:24,630 --> 00:42:23,920 to power on and off based on where we 1243 00:42:25,990 --> 00:42:24,640 were 1244 00:42:26,870 --> 00:42:26,000 and trying to manage the flow a little 1245 00:42:29,670 --> 00:42:26,880 bit 1246 00:42:32,150 --> 00:42:29,680 largely though at the melfi's been on 1247 00:42:33,910 --> 00:42:32,160 in the last little while and 1248 00:42:35,589 --> 00:42:33,920 the teams have done a good job of 1249 00:42:39,349 --> 00:42:35,599 protecting that research but we have not 1250 00:42:40,710 --> 00:42:39,359 lost any research as a result of this 1251 00:42:45,190 --> 00:42:40,720 all right peter with christian science 1252 00:42:48,950 --> 00:42:47,510 peter you there 1253 00:42:51,270 --> 00:42:48,960 okay let's go to jeff linfield with 1254 00:42:52,790 --> 00:42:51,280 national public radio 1255 00:42:54,950 --> 00:42:52,800 hi there um 1256 00:42:56,550 --> 00:42:54,960 so i was wondering if you lost the other 1257 00:42:59,190 --> 00:42:56,560 cooling loop would you be forced to 1258 00:43:00,870 --> 00:42:59,200 abandon the station and also if there 1259 00:43:02,470 --> 00:43:00,880 was a leak how quickly could you get the 1260 00:43:06,069 --> 00:43:02,480 astronauts back inside a leak in the 1261 00:43:09,910 --> 00:43:07,349 go ahead 1262 00:43:11,109 --> 00:43:09,920 so um 1263 00:43:12,470 --> 00:43:11,119 the 1264 00:43:14,309 --> 00:43:12,480 what we have been trying to protect for 1265 00:43:15,829 --> 00:43:14,319 is next first fed next worst phase is 1266 00:43:17,990 --> 00:43:15,839 the loss of that pump i would tell you 1267 00:43:20,150 --> 00:43:18,000 that given uh how we can manage the pump 1268 00:43:22,390 --> 00:43:20,160 today that uh 1269 00:43:24,790 --> 00:43:22,400 we would uh we would be in pretty good 1270 00:43:26,870 --> 00:43:24,800 shape if we lost pump b today 1271 00:43:28,550 --> 00:43:26,880 uh if you're down already down a 1272 00:43:30,470 --> 00:43:28,560 complete cooling system and you lose the 1273 00:43:32,470 --> 00:43:30,480 other cooling system then we run into 1274 00:43:34,630 --> 00:43:32,480 quite a few challenges 1275 00:43:36,550 --> 00:43:34,640 we have to rely largely on the russian 1276 00:43:37,910 --> 00:43:36,560 segment and we'd be in a pretty big 1277 00:43:40,390 --> 00:43:37,920 hurry to try to 1278 00:43:42,550 --> 00:43:40,400 get outside and repair it and so that 1279 00:43:44,790 --> 00:43:42,560 would that would challenge us if we had 1280 00:43:48,309 --> 00:43:44,800 both loops down we've always known that 1281 00:43:50,230 --> 00:43:48,319 was a a big concern and so um we try not 1282 00:43:52,230 --> 00:43:50,240 to leave ourselves in that posture very 1283 00:43:53,910 --> 00:43:52,240 long it's part of the reasons why we've 1284 00:43:55,750 --> 00:43:53,920 been kind of balancing the risk of 1285 00:43:58,470 --> 00:43:55,760 trying to fly orbital 1286 00:44:00,390 --> 00:43:58,480 if we can limp along on the a side with 1287 00:44:02,950 --> 00:44:00,400 this way we're trying to manage it 1288 00:44:04,550 --> 00:44:02,960 and and success or at least the criteria 1289 00:44:07,430 --> 00:44:04,560 we're using to say we could limp along 1290 00:44:09,109 --> 00:44:07,440 was could you stand the the b side 1291 00:44:10,470 --> 00:44:09,119 failure with the way we can manage the a 1292 00:44:13,030 --> 00:44:10,480 side today 1293 00:44:14,630 --> 00:44:13,040 um and so that was that was the question 1294 00:44:16,230 --> 00:44:14,640 we were trying to answer 1295 00:44:17,990 --> 00:44:16,240 uh yesterday afternoon we weren't 1296 00:44:19,510 --> 00:44:18,000 certain that was necessarily the case 1297 00:44:20,710 --> 00:44:19,520 today i tell you i'm still not certain 1298 00:44:22,390 --> 00:44:20,720 that's necessarily the case but i feel 1299 00:44:23,829 --> 00:44:22,400 better about our chances 1300 00:44:26,309 --> 00:44:23,839 if we have a problem and again remember 1301 00:44:28,069 --> 00:44:26,319 pump a is not completely down 1302 00:44:29,910 --> 00:44:28,079 pump a in fact the pump itself is 1303 00:44:32,069 --> 00:44:29,920 running fine and we're cooling all the 1304 00:44:33,589 --> 00:44:32,079 external oru's the last time we had a 1305 00:44:34,870 --> 00:44:33,599 pump failure and dina talked about this 1306 00:44:37,349 --> 00:44:34,880 you lost all the cooling to your 1307 00:44:39,270 --> 00:44:37,359 external orus those are major 1308 00:44:41,990 --> 00:44:39,280 power systems and power distribution 1309 00:44:45,430 --> 00:44:42,000 systems outside that that lost cooling 1310 00:44:47,349 --> 00:44:45,440 and so that has a dramatic impact uh and 1311 00:44:49,510 --> 00:44:47,359 and those components remain active and 1312 00:44:51,990 --> 00:44:49,520 so therefore we are supplying 1313 00:44:53,829 --> 00:44:52,000 power to to many of the the systems that 1314 00:44:56,390 --> 00:44:53,839 we had to manage last time so this is 1315 00:44:57,589 --> 00:44:56,400 not a complete loss of the a side to 1316 00:44:59,030 --> 00:44:57,599 begin with 1317 00:45:01,349 --> 00:44:59,040 because of the way we're learning to 1318 00:45:02,790 --> 00:45:01,359 manage it we have more confidence today 1319 00:45:04,069 --> 00:45:02,800 than we did yesterday and i suspect 1320 00:45:05,109 --> 00:45:04,079 tomorrow and the next day we'll gain 1321 00:45:06,710 --> 00:45:05,119 more 1322 00:45:08,790 --> 00:45:06,720 so i would tell you today if we lost the 1323 00:45:10,230 --> 00:45:08,800 b-side we would we would manage it 1324 00:45:12,309 --> 00:45:10,240 almost like you listened to us manage 1325 00:45:13,589 --> 00:45:12,319 the a-side today we'd 1326 00:45:15,750 --> 00:45:13,599 we would if you lost the whole pump 1327 00:45:17,589 --> 00:45:15,760 again you lose half the cooling to half 1328 00:45:19,430 --> 00:45:17,599 your power systems and so that would 1329 00:45:21,510 --> 00:45:19,440 have a more dramatic impact than you see 1330 00:45:23,349 --> 00:45:21,520 here today but it's something we can 1331 00:45:24,870 --> 00:45:23,359 manage in general 1332 00:45:26,550 --> 00:45:24,880 uh it doesn't do us a whole lot of good 1333 00:45:28,230 --> 00:45:26,560 to evacuate space station if we lose the 1334 00:45:30,230 --> 00:45:28,240 two coolant systems it does us a lot 1335 00:45:33,270 --> 00:45:30,240 more good to stay there and fix them 1336 00:45:37,030 --> 00:45:33,280 so we can get on with things 1337 00:45:51,510 --> 00:45:37,040 okay marshall with space policy online 1338 00:45:54,710 --> 00:45:52,550 anyway i'm wondering if you should 1339 00:45:56,950 --> 00:45:54,720 characterize this spacewalk as an 1340 00:45:59,910 --> 00:45:56,960 emergency and that's why you came up 1341 00:46:01,750 --> 00:45:59,920 with the absorbent pad and the snorkel 1342 00:46:03,030 --> 00:46:01,760 or are you working on those things 1343 00:46:05,510 --> 00:46:03,040 already 1344 00:46:07,589 --> 00:46:05,520 and is it going to be part of your space 1345 00:46:09,430 --> 00:46:07,599 walking plans from 1346 00:46:10,790 --> 00:46:09,440 now forward to always have those other 1347 00:46:12,950 --> 00:46:10,800 spaces 1348 00:46:13,990 --> 00:46:12,960 let me let can i answer that one you 1349 00:46:16,710 --> 00:46:14,000 guys 1350 00:46:19,109 --> 00:46:16,720 um the way i would answer that is uh we 1351 00:46:20,950 --> 00:46:19,119 we had this uh failure where we uh 1352 00:46:23,270 --> 00:46:20,960 flooded the the suit 1353 00:46:25,750 --> 00:46:23,280 um before that eva we believed we 1354 00:46:27,349 --> 00:46:25,760 believed that uh we actually wouldn't 1355 00:46:28,550 --> 00:46:27,359 have that failure mode what we believe 1356 00:46:30,790 --> 00:46:28,560 would happen 1357 00:46:32,790 --> 00:46:30,800 was the uh as we started to pass that 1358 00:46:35,190 --> 00:46:32,800 much water past the little impeller and 1359 00:46:37,349 --> 00:46:35,200 the fan a little fan and the fan pump 1360 00:46:39,829 --> 00:46:37,359 set we believe that it would stall the 1361 00:46:42,230 --> 00:46:39,839 fan uh the pump the the suit would shut 1362 00:46:44,150 --> 00:46:42,240 down and that was then began your 30 1363 00:46:45,750 --> 00:46:44,160 minute timer that you had with the with 1364 00:46:47,750 --> 00:46:45,760 the secondary oxygen pack the flow 1365 00:46:49,670 --> 00:46:47,760 oxygen and we would come back in so the 1366 00:46:51,349 --> 00:46:49,680 timing was always try to protect 30 1367 00:46:54,150 --> 00:46:51,359 minutes get inside and we believe that 1368 00:46:56,230 --> 00:46:54,160 you wouldn't necessarily flood the suit 1369 00:46:57,670 --> 00:46:56,240 we believed you would flood the the 1370 00:46:59,589 --> 00:46:57,680 system and eventually it would shut down 1371 00:47:01,190 --> 00:46:59,599 before you passed a lot of water what we 1372 00:47:03,270 --> 00:47:01,200 learned was 1373 00:47:05,190 --> 00:47:03,280 we can pass quite a bit of water uh for 1374 00:47:07,430 --> 00:47:05,200 an extended period of time and the suit 1375 00:47:10,309 --> 00:47:07,440 would keep running and so 1376 00:47:12,069 --> 00:47:10,319 uh we have reviewed not just the hazards 1377 00:47:14,230 --> 00:47:12,079 associated with this anomaly but all the 1378 00:47:15,829 --> 00:47:14,240 hazards for the suit 1379 00:47:17,190 --> 00:47:15,839 with an eye towards this and anything 1380 00:47:19,589 --> 00:47:17,200 we've learned over the years because the 1381 00:47:21,670 --> 00:47:19,599 suits are 35 years old we review the 1382 00:47:23,750 --> 00:47:21,680 hazards every so often as a matter of 1383 00:47:25,270 --> 00:47:23,760 course but when you get a new data point 1384 00:47:27,349 --> 00:47:25,280 then you look at it with the with the 1385 00:47:29,270 --> 00:47:27,359 different lens and we've done that with 1386 00:47:31,190 --> 00:47:29,280 all of our hazards so i would tell you 1387 00:47:34,150 --> 00:47:31,200 based on what we've learned 1388 00:47:35,510 --> 00:47:34,160 uh i would expect that for for 1389 00:47:38,549 --> 00:47:35,520 as long as we have this particular 1390 00:47:40,309 --> 00:47:38,559 design suit we'll we'll keep the the hap 1391 00:47:43,829 --> 00:47:40,319 and this the snorkel available to the 1392 00:47:45,750 --> 00:47:43,839 crew as a as an alternate means of 1393 00:47:47,990 --> 00:47:45,760 providing us additional margin against 1394 00:47:49,349 --> 00:47:48,000 the failure case where you have to come 1395 00:47:53,030 --> 00:47:49,359 back inside 1396 00:47:55,430 --> 00:47:53,040 um we've also done a number of tests in 1397 00:47:57,430 --> 00:47:55,440 particular one of our concerns going in 1398 00:47:59,190 --> 00:47:57,440 uh with that with the failure case we 1399 00:48:01,510 --> 00:47:59,200 dealt with was whether or not we always 1400 00:48:04,309 --> 00:48:01,520 had this vent where you can you can open 1401 00:48:05,670 --> 00:48:04,319 up and let vent and let the the air flow 1402 00:48:08,470 --> 00:48:05,680 through this little vent on the side of 1403 00:48:09,990 --> 00:48:08,480 the helmet to keep the flow across the 1404 00:48:11,670 --> 00:48:10,000 the crew's 1405 00:48:12,950 --> 00:48:11,680 head so you don't get stagnant air in 1406 00:48:15,109 --> 00:48:12,960 the helmet and eventually have these 1407 00:48:17,030 --> 00:48:15,119 kind of failures and we were worried 1408 00:48:18,150 --> 00:48:17,040 about opening it and flowing water if 1409 00:48:19,510 --> 00:48:18,160 there's water and helmet flowing the 1410 00:48:20,950 --> 00:48:19,520 water out the good news is you get the 1411 00:48:22,150 --> 00:48:20,960 water out the bad news is if you freeze 1412 00:48:23,910 --> 00:48:22,160 it and you can't close it again you 1413 00:48:25,109 --> 00:48:23,920 could be in a worse posture so we've 1414 00:48:26,710 --> 00:48:25,119 done a lot of testing improved to 1415 00:48:28,390 --> 00:48:26,720 ourselves we can't freeze it open and 1416 00:48:30,069 --> 00:48:28,400 it'll pass water 1417 00:48:32,390 --> 00:48:30,079 so we've done another number of other 1418 00:48:33,829 --> 00:48:32,400 tests and all of this is 1419 00:48:35,349 --> 00:48:33,839 data that we're putting that we've put 1420 00:48:38,069 --> 00:48:35,359 back into our hazards and we looked at 1421 00:48:40,549 --> 00:48:38,079 our hazards and made sure that we have 1422 00:48:43,109 --> 00:48:40,559 all the controls we need to protect 1423 00:48:44,710 --> 00:48:43,119 the crews and 1424 00:48:46,790 --> 00:48:44,720 and we still are at the point we think 1425 00:48:50,069 --> 00:48:46,800 you can protect a 30-minute case where 1426 00:48:51,910 --> 00:48:50,079 you have to be in within 30 minutes and 1427 00:48:53,430 --> 00:48:51,920 even with these new scenarios but part 1428 00:48:55,829 --> 00:48:53,440 of what gives us a little margin in the 1429 00:48:56,870 --> 00:48:55,839 system is this hap and the snorkel which 1430 00:48:59,510 --> 00:48:56,880 are 1431 00:49:02,950 --> 00:48:59,520 relatively simple to do and and so i 1432 00:49:04,710 --> 00:49:02,960 would suspect uh for the future as we 1433 00:49:06,710 --> 00:49:04,720 use emu's i would imagine we'll continue 1434 00:49:08,390 --> 00:49:06,720 to put these components in there to give 1435 00:49:10,390 --> 00:49:08,400 us margin even 1436 00:49:13,589 --> 00:49:10,400 as we mod the suit and feel better about 1437 00:49:15,190 --> 00:49:13,599 that particular anomaly 1438 00:49:16,390 --> 00:49:15,200 okay thanks marcia just a friendly uh 1439 00:49:17,589 --> 00:49:16,400 reminder to everybody on the phone lines 1440 00:49:19,030 --> 00:49:17,599 keep your phones on mutant tell a call 1441 00:49:20,549 --> 00:49:19,040 on you that sort of helps everybody out 1442 00:49:23,750 --> 00:49:20,559 let's go to stephen clark 1443 00:49:27,990 --> 00:49:25,510 hi thanks um 1444 00:49:29,349 --> 00:49:28,000 just a question on uh the delay of the 1445 00:49:30,549 --> 00:49:29,359 orbital flight 1446 00:49:33,270 --> 00:49:30,559 can you talk a little bit about the 1447 00:49:34,549 --> 00:49:33,280 impact of that to some of the payloads 1448 00:49:35,910 --> 00:49:34,559 inside the cygnus will you have to 1449 00:49:39,430 --> 00:49:35,920 replace any 1450 00:49:42,309 --> 00:49:39,440 experiment samples inside there and also 1451 00:49:46,069 --> 00:49:42,319 any expected downstream impacts to the 1452 00:49:48,710 --> 00:49:46,079 visiting vehicle manifest for 2014. 1453 00:49:51,190 --> 00:49:48,720 um i wouldn't expect a big impact to the 1454 00:49:53,030 --> 00:49:51,200 downstream manifest the orbital guys 1455 00:49:56,309 --> 00:49:53,040 might have a little slip in their next 1456 00:49:58,230 --> 00:49:56,319 flight but it wouldn't be significant 1457 00:50:00,950 --> 00:49:58,240 unless something else happens it would 1458 00:50:05,510 --> 00:50:00,960 be significant we do have some 1459 00:50:06,549 --> 00:50:05,520 late load items uh we have some 1460 00:50:08,630 --> 00:50:06,559 freezer 1461 00:50:11,430 --> 00:50:08,640 blocks that we use to keep things cold 1462 00:50:13,270 --> 00:50:11,440 so they don't stay frozen forever 1463 00:50:15,829 --> 00:50:13,280 so we'll we'll take those out and 1464 00:50:17,750 --> 00:50:15,839 re-freeze them and and then 1465 00:50:19,270 --> 00:50:17,760 store the items that are in those 1466 00:50:21,589 --> 00:50:19,280 containers until ready to go fly and 1467 00:50:23,109 --> 00:50:21,599 then we'll we'll pack them back up and 1468 00:50:25,349 --> 00:50:23,119 send them on their way also 1469 00:50:27,270 --> 00:50:25,359 interestingly enough we have ants on 1470 00:50:29,190 --> 00:50:27,280 board and 1471 00:50:31,109 --> 00:50:29,200 and while most of us try to kill ants 1472 00:50:35,109 --> 00:50:31,119 we're trying to keep these alive 1473 00:50:37,030 --> 00:50:35,119 and uh and so we will it's a ant habitat 1474 00:50:39,430 --> 00:50:37,040 it lasts for about 10 days so we'll roll 1475 00:50:42,710 --> 00:50:39,440 back and as i understand it we feed the 1476 00:50:43,990 --> 00:50:42,720 ants and we'll we'll take care of them 1477 00:50:45,510 --> 00:50:44,000 until we're ready to pack them up and 1478 00:50:47,270 --> 00:50:45,520 then the 10-day clock will start again 1479 00:50:49,349 --> 00:50:47,280 we'll late load and and 1480 00:50:51,109 --> 00:50:49,359 i think it's 12-day clock actually so 1481 00:50:53,750 --> 00:50:51,119 we'll go back into our normal flow so we 1482 00:50:55,829 --> 00:50:53,760 didn't lose any research we did have 1483 00:50:57,589 --> 00:50:55,839 we had confirmed with orbital at that 1484 00:50:58,870 --> 00:50:57,599 point that we could go all the way to 1485 00:51:00,230 --> 00:50:58,880 the end of the window and protect all 1486 00:51:01,750 --> 00:51:00,240 the research but now that we're not 1487 00:51:02,950 --> 00:51:01,760 launching we'll back up we can get back 1488 00:51:05,030 --> 00:51:02,960 to the items 1489 00:51:08,549 --> 00:51:05,040 uh and then we'll uh we'll keep them 1490 00:51:11,190 --> 00:51:08,559 conditioned until we're ready to fly 1491 00:51:13,349 --> 00:51:11,200 okay irene with reuters 1492 00:51:16,150 --> 00:51:13,359 thanks very much um i have 1493 00:51:17,270 --> 00:51:16,160 three quick questions the first is the 1494 00:51:22,710 --> 00:51:17,280 amf 1495 00:51:25,990 --> 00:51:24,470 you want me to elaborate 1496 00:51:27,829 --> 00:51:26,000 i'm sorry we can't hear you either 1497 00:51:30,790 --> 00:51:27,839 whoever is speaking russian is not on 1498 00:51:33,109 --> 00:51:30,800 mute and uh we can't hear your responses 1499 00:51:34,150 --> 00:51:33,119 yes ams is still operating at some point 1500 00:51:35,990 --> 00:51:34,160 we had 1501 00:51:37,589 --> 00:51:36,000 as we get to the high beta we have to 1502 00:51:38,950 --> 00:51:37,599 maneuver the uh 1503 00:51:43,030 --> 00:51:38,960 uh 1504 00:51:45,270 --> 00:51:43,040 radiators the one of the central system 1505 00:51:47,349 --> 00:51:45,280 radiators to give them a little bit of 1506 00:51:48,870 --> 00:51:47,359 protection from the sun that was going 1507 00:51:51,270 --> 00:51:48,880 to be a concern when we were trying to 1508 00:51:53,109 --> 00:51:51,280 manage this loop but assuming that we 1509 00:51:54,630 --> 00:51:53,119 get the the eva done then we'll be able 1510 00:51:56,309 --> 00:51:54,640 to protect them like we normally do but 1511 00:51:57,670 --> 00:51:56,319 they're operating today unless there's 1512 00:51:59,829 --> 00:51:57,680 been a failure in the last hour or two i 1513 00:52:02,150 --> 00:51:59,839 hadn't heard about it 1514 00:52:04,549 --> 00:52:02,160 the other question i think dina did you 1515 00:52:08,230 --> 00:52:04,559 say that mike was going to be wearing uh 1516 00:52:10,309 --> 00:52:08,240 luca's suit and uh for allison 1517 00:52:11,430 --> 00:52:10,319 uh when were those charcoals that are 1518 00:52:14,230 --> 00:52:11,440 going to be used when were those 1519 00:52:16,390 --> 00:52:14,240 fabricated please thanks 1520 00:52:18,549 --> 00:52:16,400 okay so um 1521 00:52:20,470 --> 00:52:18,559 yes mike hopkins will be wearing luca's 1522 00:52:23,349 --> 00:52:20,480 old soup but it will have a brand new 1523 00:52:24,710 --> 00:52:23,359 fresh fan pump separator um additionally 1524 00:52:26,069 --> 00:52:24,720 there are some other components that we 1525 00:52:28,309 --> 00:52:26,079 changed out on it 1526 00:52:30,710 --> 00:52:28,319 mostly just from a sizing perspective 1527 00:52:33,109 --> 00:52:30,720 and because we were low on oxygen on the 1528 00:52:35,750 --> 00:52:33,119 secondary oxygen pack so we did do some 1529 00:52:38,470 --> 00:52:35,760 other um change outs but notably would 1530 00:52:40,150 --> 00:52:38,480 be the fan pump separator and all the 1531 00:52:41,750 --> 00:52:40,160 water lines contained within that unit 1532 00:52:42,950 --> 00:52:41,760 so 1533 00:52:44,790 --> 00:52:42,960 you know we like i said we've done a 1534 00:52:46,549 --> 00:52:44,800 thorough return to service examination 1535 00:52:47,750 --> 00:52:46,559 of everything that happened on ebay 23 1536 00:52:49,430 --> 00:52:47,760 and then considering that we changed 1537 00:52:51,510 --> 00:52:49,440 something out on orbit 1538 00:52:53,750 --> 00:52:51,520 we feel confident that the suit is a 1539 00:52:54,549 --> 00:52:53,760 very clean suit and ready to go 1540 00:52:56,230 --> 00:52:54,559 and then 1541 00:52:58,390 --> 00:52:56,240 the other one was the snorkel right and 1542 00:53:00,390 --> 00:52:58,400 the crew fabricated the snorkels on 1543 00:53:04,950 --> 00:53:00,400 board on on sunday prior to their 1544 00:53:12,829 --> 00:53:06,470 i'm sorry i missed that they were 1545 00:53:16,150 --> 00:53:14,710 thanks you have another do you have 1546 00:53:17,990 --> 00:53:16,160 another question 1547 00:53:19,910 --> 00:53:18,000 um i i do actually have this wasn't part 1548 00:53:22,470 --> 00:53:19,920 of it but if there is a problem with the 1549 00:53:24,790 --> 00:53:22,480 suits is it is there another backup plan 1550 00:53:27,430 --> 00:53:24,800 is it possible for the astronauts to use 1551 00:53:30,630 --> 00:53:27,440 the the so-called um the russian suits 1552 00:53:31,829 --> 00:53:30,640 or what would be the options if there's 1553 00:53:34,150 --> 00:53:31,839 continuing 1554 00:53:35,990 --> 00:53:34,160 issues with the uh with the leaks and 1555 00:53:39,349 --> 00:53:36,000 the helmets 1556 00:53:44,390 --> 00:53:42,069 i'll say i would be surprised if we have 1557 00:53:46,630 --> 00:53:44,400 a problem with 1558 00:53:50,069 --> 00:53:46,640 with suits once we change out the 1559 00:53:52,710 --> 00:53:50,079 fan pump set what we are learning is is 1560 00:53:55,190 --> 00:53:52,720 is this problem is caused by 1561 00:53:57,510 --> 00:53:55,200 flowing 1562 00:53:58,790 --> 00:53:57,520 water that has a high silica content 1563 00:54:01,589 --> 00:53:58,800 through a 1564 00:54:03,270 --> 00:54:01,599 um centrifuge device which is the fan 1565 00:54:05,430 --> 00:54:03,280 pump step turns out to be and then you 1566 00:54:07,349 --> 00:54:05,440 create particulate 1567 00:54:10,630 --> 00:54:07,359 we think it occurs over 1568 00:54:12,790 --> 00:54:10,640 a number of exposures 1569 00:54:15,670 --> 00:54:12,800 we've looked at 1570 00:54:17,910 --> 00:54:15,680 our filters and the only saturated 1571 00:54:20,390 --> 00:54:17,920 filter we found 1572 00:54:22,630 --> 00:54:20,400 we brought home in august of 2012. we 1573 00:54:26,790 --> 00:54:22,640 had exposed both 1574 00:54:31,190 --> 00:54:26,800 30 11 and 3005 to this um 1575 00:54:32,549 --> 00:54:31,200 uh this overly saturated uh filter we 1576 00:54:34,630 --> 00:54:32,559 there's actually two filters in the 1577 00:54:36,470 --> 00:54:34,640 system we brought home the downstream 1578 00:54:38,150 --> 00:54:36,480 particulate filter and in there we had 1579 00:54:40,789 --> 00:54:38,160 discovered based on what was in there 1580 00:54:42,870 --> 00:54:40,799 that the ion filter in front of it was 1581 00:54:44,390 --> 00:54:42,880 saturated unfortunately we didn't know 1582 00:54:47,270 --> 00:54:44,400 that at the time and so we continued to 1583 00:54:49,190 --> 00:54:47,280 use the ion filter both 3005 and 3011 1584 00:54:51,589 --> 00:54:49,200 were exposed to this we believe is 1585 00:54:53,990 --> 00:54:51,599 highly likely this is this is where the 1586 00:54:55,589 --> 00:54:54,000 contamination came from how it got 1587 00:54:57,190 --> 00:54:55,599 introduced is something we're still 1588 00:54:59,990 --> 00:54:57,200 trying to sort out 1589 00:55:02,309 --> 00:55:00,000 but we we believe with clean filters 1590 00:55:03,670 --> 00:55:02,319 it will the ion filter will trap the 1591 00:55:05,430 --> 00:55:03,680 silicate 1592 00:55:07,670 --> 00:55:05,440 as was mentioned 1593 00:55:09,750 --> 00:55:07,680 by i think dina mentioned it we had 1594 00:55:11,910 --> 00:55:09,760 found that there's an excess in this one 1595 00:55:13,030 --> 00:55:11,920 case there's an excessive amount 1596 00:55:15,030 --> 00:55:13,040 of 1597 00:55:17,510 --> 00:55:15,040 fluor chlorides and 1598 00:55:19,349 --> 00:55:17,520 sulfates which is not really important 1599 00:55:21,030 --> 00:55:19,359 other than if you know that what happens 1600 00:55:22,470 --> 00:55:21,040 in an ion filter when those show up is 1601 00:55:24,549 --> 00:55:22,480 they have an affinity towards the ion 1602 00:55:26,069 --> 00:55:24,559 filter and so they kick the silicates 1603 00:55:27,430 --> 00:55:26,079 off and when the silicates get kicked 1604 00:55:28,549 --> 00:55:27,440 off they get kicked off in large 1605 00:55:30,549 --> 00:55:28,559 quantities 1606 00:55:32,789 --> 00:55:30,559 go into the flow stream and then 1607 00:55:35,829 --> 00:55:32,799 once they get to a centrifuge type 1608 00:55:38,630 --> 00:55:35,839 device they nucleate inside the pump and 1609 00:55:40,150 --> 00:55:38,640 then you start plugging up holes so 1610 00:55:41,910 --> 00:55:40,160 we first of all we believe that the 1611 00:55:43,510 --> 00:55:41,920 lines we're using today are clean we've 1612 00:55:46,150 --> 00:55:43,520 put in new filters 1613 00:55:48,549 --> 00:55:46,160 and we think the filter system works 1614 00:55:50,230 --> 00:55:48,559 3015 you know had the failure it's 1615 00:55:51,670 --> 00:55:50,240 possible it might have played a role in 1616 00:55:55,109 --> 00:55:51,680 this at some point 1617 00:55:56,230 --> 00:55:55,119 um 3011 now has been completely all of 1618 00:55:58,150 --> 00:55:56,240 the components inside have been 1619 00:55:59,670 --> 00:55:58,160 completely changed out 1620 00:56:01,109 --> 00:55:59,680 um and 1621 00:56:02,630 --> 00:56:01,119 most importantly it's been the fan pump 1622 00:56:05,670 --> 00:56:02,640 set 1623 00:56:07,670 --> 00:56:05,680 so 3010 really wasn't exposed to this 1624 00:56:10,069 --> 00:56:07,680 particular line after 1625 00:56:12,630 --> 00:56:10,079 after we know it was saturated now it it 1626 00:56:14,470 --> 00:56:12,640 was exposed once to this line 1627 00:56:17,030 --> 00:56:14,480 before we knew it was saturated but it 1628 00:56:18,950 --> 00:56:17,040 was early on and so we feel pretty good 1629 00:56:20,470 --> 00:56:18,960 about 30 10. 1630 00:56:22,470 --> 00:56:20,480 so i said all that to say as we go 1631 00:56:24,870 --> 00:56:22,480 outside and we flood a suit if it's 30 1632 00:56:27,030 --> 00:56:24,880 11 we'll all be shocked 1633 00:56:28,549 --> 00:56:27,040 but if we do flood a suit then then what 1634 00:56:33,030 --> 00:56:28,559 we'll do is we'll go back inside and 1635 00:56:34,789 --> 00:56:33,040 we'll look at the data if it's 30 10 1636 00:56:36,230 --> 00:56:34,799 then what we'll do is and we still plan 1637 00:56:38,230 --> 00:56:36,240 to do this we just got to get them on 1638 00:56:39,990 --> 00:56:38,240 orbit and one of them is on orb one it's 1639 00:56:41,030 --> 00:56:40,000 the reason why we were trying to fly orb 1640 00:56:44,470 --> 00:56:41,040 one first 1641 00:56:45,670 --> 00:56:44,480 uh is to fly a clean fan pump set so 1642 00:56:47,990 --> 00:56:45,680 we've got 1643 00:56:50,549 --> 00:56:48,000 what we believe to be be a clean one in 1644 00:56:53,510 --> 00:56:50,559 3011. we've got a one that we know is 1645 00:56:55,430 --> 00:56:53,520 clean it's on orb one and we'll fly 1646 00:56:57,349 --> 00:56:55,440 as we sort our way through this of this 1647 00:56:59,109 --> 00:56:57,359 anomaly we intend to fly 1648 00:57:00,549 --> 00:56:59,119 at least one more if not two more fan 1649 00:57:01,990 --> 00:57:00,559 pump steps to make sure we know the 1650 00:57:03,829 --> 00:57:02,000 condition of the pan pump steps in the 1651 00:57:05,910 --> 00:57:03,839 suit and when you do that then at least 1652 00:57:07,589 --> 00:57:05,920 for this particular failure note mode 1653 00:57:09,589 --> 00:57:07,599 even if we don't know root cause quite 1654 00:57:10,630 --> 00:57:09,599 yet we think we have a number of evas in 1655 00:57:12,230 --> 00:57:10,640 these suits 1656 00:57:13,670 --> 00:57:12,240 and i would tell you that given what the 1657 00:57:15,190 --> 00:57:13,680 team is learning on how to manage this 1658 00:57:16,950 --> 00:57:15,200 pump i think we've 1659 00:57:18,870 --> 00:57:16,960 we will probably be able to buy our time 1660 00:57:21,270 --> 00:57:18,880 sells time if we have a province ebay 1661 00:57:23,829 --> 00:57:21,280 we'll probably back out and then we'll 1662 00:57:26,390 --> 00:57:23,839 talk about what plan b is if we can get 1663 00:57:27,750 --> 00:57:26,400 a second fan pump step on orb one we 1664 00:57:29,670 --> 00:57:27,760 might try to do that and get it late 1665 00:57:31,910 --> 00:57:29,680 loaded and and then fly orb one and then 1666 00:57:34,390 --> 00:57:31,920 go back outside and do the ebas but if 1667 00:57:37,190 --> 00:57:34,400 we can if we can prevent having to do 1668 00:57:38,309 --> 00:57:37,200 that having to manage this loop in this 1669 00:57:40,069 --> 00:57:38,319 um 1670 00:57:42,150 --> 00:57:40,079 in this degraded state we'd prefer to do 1671 00:57:45,030 --> 00:57:42,160 that 1672 00:57:46,870 --> 00:57:45,040 thanks so much for my short questions 1673 00:57:51,109 --> 00:57:46,880 all right thanks irene uh let's go to 1674 00:57:53,990 --> 00:57:52,829 uh 1675 00:57:55,430 --> 00:57:54,000 hello this is 1676 00:57:58,069 --> 00:57:55,440 ivan from uh 1677 00:58:00,630 --> 00:57:58,079 task news agency of russia uh i wanted 1678 00:58:02,789 --> 00:58:00,640 to ask you how the recent 1679 00:58:04,549 --> 00:58:02,799 malfunction affected the russian segment 1680 00:58:06,630 --> 00:58:04,559 of the station by far 1681 00:58:10,230 --> 00:58:06,640 and if the first coming 1682 00:58:12,870 --> 00:58:10,240 eva will not be successful how exactly 1683 00:58:15,270 --> 00:58:12,880 will that affect russian figment and 1684 00:58:17,109 --> 00:58:15,280 russian cosmonauts 1685 00:58:18,710 --> 00:58:17,119 let's see on the russian segment we do 1686 00:58:20,789 --> 00:58:18,720 provide power 1687 00:58:22,950 --> 00:58:20,799 to the russian segment 1688 00:58:24,470 --> 00:58:22,960 but again this failure mode on this pump 1689 00:58:27,270 --> 00:58:24,480 we're actually 1690 00:58:29,190 --> 00:58:27,280 where we're reducing cooling is inside 1691 00:58:31,589 --> 00:58:29,200 the space station not outside the out 1692 00:58:34,549 --> 00:58:31,599 the exterior components 1693 00:58:36,630 --> 00:58:34,559 the mbsu's which provide 1694 00:58:37,670 --> 00:58:36,640 power distribution and also our source 1695 00:58:39,270 --> 00:58:37,680 of power 1696 00:58:40,950 --> 00:58:39,280 over to the russian segment are are 1697 00:58:42,630 --> 00:58:40,960 working and so today 1698 00:58:43,990 --> 00:58:42,640 we are managing the power and we're 1699 00:58:45,430 --> 00:58:44,000 trying to 1700 00:58:47,109 --> 00:58:45,440 minimize 1701 00:58:49,190 --> 00:58:47,119 all of our loads throughout the station 1702 00:58:50,789 --> 00:58:49,200 but we've we continue to provide the 1703 00:58:52,309 --> 00:58:50,799 power that the russian segment needs to 1704 00:58:54,069 --> 00:58:52,319 operate so 1705 00:58:54,789 --> 00:58:54,079 from that respect 1706 00:58:58,710 --> 00:58:54,799 i 1707 00:59:02,069 --> 00:58:58,720 segment 1708 00:59:04,309 --> 00:59:02,079 colleagues at all i will say that 1709 00:59:06,630 --> 00:59:04,319 there's a russian segment eda planned 1710 00:59:08,710 --> 00:59:06,640 for the 27th of december 1711 00:59:10,150 --> 00:59:08,720 uh our russian colleagues were kind 1712 00:59:11,750 --> 00:59:10,160 enough to move it to the right so we 1713 00:59:13,589 --> 00:59:11,760 could fly the orbital mission of course 1714 00:59:14,950 --> 00:59:13,599 then this anomaly occurred 1715 00:59:17,829 --> 00:59:14,960 uh it is our 1716 00:59:20,710 --> 00:59:17,839 our plan to try to get this all this 1717 00:59:23,270 --> 00:59:20,720 work done before the russian segment eva 1718 00:59:25,030 --> 00:59:23,280 um so we don't impact that particular 1719 00:59:26,230 --> 00:59:25,040 eba that's the only thing i know of 1720 00:59:27,670 --> 00:59:26,240 really that's 1721 00:59:29,589 --> 00:59:27,680 something we're having to to watch 1722 00:59:31,270 --> 00:59:29,599 closely 1723 00:59:34,390 --> 00:59:31,280 okay thank you let's go to james dean 1724 00:59:38,789 --> 00:59:36,710 all right thanks um so mr stephanie i 1725 00:59:40,789 --> 00:59:38,799 know you you think that 1726 00:59:42,309 --> 00:59:40,799 you'll be able to use this pump module 1727 00:59:43,589 --> 00:59:42,319 again down the road with with some 1728 00:59:44,870 --> 00:59:43,599 modification 1729 00:59:46,390 --> 00:59:44,880 uh so i just wondered if you could kind 1730 00:59:48,069 --> 00:59:46,400 of recap 1731 00:59:51,030 --> 00:59:48,079 where this event where you think it's 1732 00:59:53,030 --> 00:59:51,040 left to you um in terms of or in terms 1733 00:59:54,789 --> 00:59:53,040 of how long you expected things to last 1734 00:59:55,510 --> 00:59:54,799 and average failure rates and all that 1735 01:00:02,309 --> 00:59:55,520 as 1736 01:00:03,829 --> 01:00:02,319 thought you would be at this point uh do 1737 01:00:05,829 --> 01:00:03,839 you really think it's 1738 01:00:07,349 --> 01:00:05,839 no impact if if this 1739 01:00:09,430 --> 01:00:07,359 module can be 1740 01:00:10,950 --> 01:00:09,440 you know recovered later or kind of what 1741 01:00:12,950 --> 01:00:10,960 where does this uh 1742 01:00:14,870 --> 01:00:12,960 leave you as you as you map out you know 1743 01:00:16,470 --> 01:00:14,880 the years to come and the spares 1744 01:00:19,190 --> 01:00:16,480 available 1745 01:00:21,109 --> 01:00:19,200 uh james that's a great question and 1746 01:00:22,710 --> 01:00:21,119 so i'll try to answer it as succinctly 1747 01:00:25,670 --> 01:00:22,720 as i can 1748 01:00:27,990 --> 01:00:25,680 every year we reassess our logistics 1749 01:00:29,109 --> 01:00:28,000 plan we we look at all the failures that 1750 01:00:30,950 --> 01:00:29,119 occurred 1751 01:00:32,710 --> 01:00:30,960 uh we look at this 1752 01:00:34,549 --> 01:00:32,720 the statistics associated with those 1753 01:00:35,670 --> 01:00:34,559 failures and past failures and the 1754 01:00:37,829 --> 01:00:35,680 design 1755 01:00:40,789 --> 01:00:37,839 of the unit 1756 01:00:43,510 --> 01:00:40,799 and we try to forecast how many spares 1757 01:00:46,710 --> 01:00:43,520 we need uh at least 1758 01:00:47,829 --> 01:00:46,720 up through uh 2020. 1759 01:00:49,829 --> 01:00:47,839 and so 1760 01:00:52,870 --> 01:00:49,839 uh 1761 01:00:54,549 --> 01:00:52,880 when we do that analysis for the next 1762 01:00:56,230 --> 01:00:54,559 year which starts 1763 01:00:58,150 --> 01:00:56,240 i think the beginning of the year so i 1764 01:01:00,789 --> 01:00:58,160 think we begin that process about early 1765 01:01:03,670 --> 01:01:00,799 february when we do the next run we're 1766 01:01:06,309 --> 01:01:03,680 going to flow in this failure 1767 01:01:07,510 --> 01:01:06,319 and and we'll see what it spits out at 1768 01:01:09,270 --> 01:01:07,520 the other end 1769 01:01:15,349 --> 01:01:09,280 what is 1770 01:01:17,430 --> 01:01:15,359 uh that today we have enough spares in 1771 01:01:19,109 --> 01:01:17,440 what we plan to build to get us to 2020 1772 01:01:22,150 --> 01:01:19,119 at least to 2020 1773 01:01:25,190 --> 01:01:22,160 um and protecting this pump 1774 01:01:27,670 --> 01:01:25,200 uh means if we can if we can 1775 01:01:29,109 --> 01:01:27,680 find a way to fix this pumper or add 1776 01:01:31,510 --> 01:01:29,119 something to the front of this pump to 1777 01:01:33,030 --> 01:01:31,520 let us regain its capability then 1778 01:01:35,270 --> 01:01:33,040 essentially we still have all the spares 1779 01:01:37,190 --> 01:01:35,280 we thought we needed before this failure 1780 01:01:39,349 --> 01:01:37,200 occurred and you have to remember your 1781 01:01:41,430 --> 01:01:39,359 your analysis assumes failure so we have 1782 01:01:43,430 --> 01:01:41,440 to go back and look at this failure and 1783 01:01:45,270 --> 01:01:43,440 see on average whether it fits in in the 1784 01:01:46,789 --> 01:01:45,280 trade space and see if it affects how 1785 01:01:48,150 --> 01:01:46,799 many spares we think we need we haven't 1786 01:01:49,829 --> 01:01:48,160 done that yet 1787 01:01:51,510 --> 01:01:49,839 but we will 1788 01:01:53,109 --> 01:01:51,520 and it won't be just this thing we're 1789 01:01:55,029 --> 01:01:53,119 talking about you know we have a certain 1790 01:01:57,430 --> 01:01:55,039 amount of money we protect to to build 1791 01:01:59,430 --> 01:01:57,440 the spares we need and so some things 1792 01:02:01,109 --> 01:01:59,440 didn't fail that we thought were and so 1793 01:02:03,270 --> 01:02:01,119 that'll make our position better in 1794 01:02:04,870 --> 01:02:03,280 those components some things failed that 1795 01:02:06,549 --> 01:02:04,880 we didn't expect 1796 01:02:08,630 --> 01:02:06,559 and those make things a little worse and 1797 01:02:10,710 --> 01:02:08,640 some things did about what we expected 1798 01:02:12,069 --> 01:02:10,720 and so in the end we'll look to 1799 01:02:13,910 --> 01:02:12,079 you know kind of balance things out we 1800 01:02:15,510 --> 01:02:13,920 do that we do that every year and we 1801 01:02:17,510 --> 01:02:15,520 haven't run it in this particular case 1802 01:02:21,109 --> 01:02:17,520 it's a fairly complicated 1803 01:02:23,750 --> 01:02:21,119 uh analysis process we go through um 1804 01:02:26,710 --> 01:02:23,760 with these orus and it and it it learns 1805 01:02:28,470 --> 01:02:26,720 from each year that you operate um so it 1806 01:02:30,789 --> 01:02:28,480 takes us quite a bit of time to run the 1807 01:02:32,870 --> 01:02:30,799 system for for uh 1808 01:02:34,950 --> 01:02:32,880 run the analysis for all the systems but 1809 01:02:36,549 --> 01:02:34,960 that's future work i wouldn't expect a 1810 01:02:38,950 --> 01:02:36,559 dramatic change 1811 01:02:40,789 --> 01:02:38,960 um but it but it it may have some impact 1812 01:02:43,109 --> 01:02:40,799 on the number of spares we think we need 1813 01:02:45,029 --> 01:02:43,119 by 2020. 1814 01:02:45,910 --> 01:02:45,039 okay thanks james follow us here in the 1815 01:02:47,430 --> 01:02:45,920 room 1816 01:02:48,630 --> 01:02:47,440 okay we're going to wrap it up we want 1817 01:02:51,589 --> 01:02:48,640 to remind you that the spacewalks are 1818 01:02:53,270 --> 01:02:51,599 coming up on the 21st 23rd and 25th they 1819 01:02:56,069 --> 01:02:53,280 begin about the same time every day our 1820 01:02:59,029 --> 01:02:56,079 nasa tv coverage will begin at 5 15 a.m 1821 01:03:00,470 --> 01:02:59,039 central time 6 15 a.m eastern time all 1822 01:03:02,069 --> 01:03:00,480 three of those days in the actual 1823 01:03:04,390 --> 01:03:02,079 spacewalks will officially begin about 1824 01:03:06,069 --> 01:03:04,400 an hour or so after we come on the air 1825 01:03:08,630 --> 01:03:06,079 for all the latest just log on to 1826 01:03:10,390 --> 01:03:08,640 nasa.gov station as we get ready to kick