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on the ui a

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sweet power ev1 to 202 of offs okay

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power ev1

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off

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begun at 601 a.m central time 701 a.m

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eastern time mike hopkins and rick

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mastracchio now officially you wanted

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so rick mastracchio there has made his

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way out he's got the suit with the red

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stripe mike hopkins making his way out

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and say again the distance to station

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stubborn less than half a meter so

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there's a good look at the actual uh

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module itself you see both the fluid

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lines there in the middle and the

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it tracy let's talk about this for a

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second because you're very familiar with

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this work site these quick disconnects

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can be a little bit tricky can't they

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they certainly can they are our largest

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quick disconnects on on orbit

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and when uh we did this

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task on

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in 2010 those lines were pressurized up

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to about 360 psi which made

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the

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operation a lot more difficult we have

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since reduced the pressure for these

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yep looks good

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hey thanks rick

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as we continue to take a look at rick

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mastranco's helmet cam here

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the crew getting

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this pump removal underway they're just

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undoing some wire ties that uh tracy you

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and doug both did back three years ago

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yes um

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just basically wind the tethers for all

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awesome thanks rick

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it's demated pull back on the release

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yep so now we're in 46 minutes into

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today's spacewalk the first of these

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ammonia lines has been disconnected and

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this is mission control houston one hour

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56 minutes into today spacewalk two of

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these ammonia lines have been

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disconnected especially this bigger one

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that gave some problems back in 2010 but

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to rick mastracchio mike hopkins made

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quick work of it he was talking about

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some snow that he saw now that is frozen

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pneumonia coming out of those lines

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obviously they watch ammonia pretty

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closely uh they did confirm that some of

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it did get on his suit but tracy let's

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talk about what they would do i mean

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there's a procedure to take care of that

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right

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yeah when they um

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so what i imagine got on his suit was

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solid and um the solid does not

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penetrate the suit it just bounces off

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but but for the uh

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but just for the uh

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mating the cutie it's the big one the m3

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line we're gonna make that one first

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just for the

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safety protocol we'll do what's called a

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bake out though and

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they can be baking out during the time

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they're doing a task it'll just be

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correlated to what the time would be if

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they were inside the crew lock

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and then they'll do some testing once

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they get in the crew lock this will be

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at the end of the yeah into the ava

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so the last of the fluid disconnects has

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been removed from this pump module so

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all of the ammonia lines have been

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disconnected at this point male and

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female

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qd for debris damage and ammonia

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crystals

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and about about like the m1 line and the

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ammonia crystals rick

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so what they will do is go ahead and

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begin the process of removing the

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electrical connectors from the failed

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pump

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and then they will actually remove it

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and put it on what you will hear called

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a poa

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this is basically just an attachment

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point a temporary stowage location

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outside the station for pieces of

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hardware

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so the crew is reporting to the ground

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teams that all the different electrical

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connectors have been removed from the

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failed pump

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itself so coming up they're going to be

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removing the pump actually from where it

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again this pump was 780 pounds is about

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how many more there's a second half i

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can see you need to come off about

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another eight inches

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okay let me try to do it

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hey yeah

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station forward just

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five or ten centimeters

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to the station forward ten centimeters

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arms in motion

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this view on board the international

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space station as it flies 261 miles

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above the south pacific ocean gives you

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a pretty dramatic view here of exactly

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how big this pump is you get a sense of

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just the sheer size of it

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rick mastracchio still hanging on to it

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mike hopkins there on the right hand

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so tracy as we take a look at this

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tell everybody what we're looking at

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well on the right side of the screen you

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see the what we're calling the poa which

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is the um

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receptacle it basically duplicates the

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end of the robotic arm and it's grabbing

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a hold of what's on the left side which

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is the pump module that rick you see at

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the bottom left is holding and that

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adjustable grapple bar the agb was

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attached to the pump module and it is

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now the interface between the pump

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module and the poet that's holding it in

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place

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and koichi the arm operator is not only

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operating um the arm to bring rick and

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the pump module into the power but he

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also will switch

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screens and then control the poa itself

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and then

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activate the snares to

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wrap around the grapple fixture that is

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attached to the pump module and it'll

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hold it secure in place whenever you're

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working with equipment this big i mean

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you know obviously we've never been up

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there but it looks it looks like it'd be

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a little bit hard to kind of guide this

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stuff in whenever you're talking about

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equipment that's that big in nature it's

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kind of hard to see absolutely and you

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can see where rick is his eyes are now

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looking right at a pump module that's

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his view through his helmet camera

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you're seeing right there he can't see

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the grapple fixture and that's what um

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koichi is looking at through a camera

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that's mounted on the top side of the

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poa and he can see an alignment pin

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that's helping him

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give

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directions to rick as well as his own

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inputs koichi's inputs into the arm to

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bring the pump module into the poa yeah

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looks like they got it secured so it

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this is mission control houston we're

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now five hours and nine minutes into

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today's spacewalk what they're doing

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is pretty much cleaning up the

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activities for today this should last

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about another 30 minutes and that should

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end today's spacewalk they were very far

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ahead of the timeline today

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they did go ahead and get the pump

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module removed from where it was

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where it had been over the last several

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years and put up on this payload

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attachment point that's where it will

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stay

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and they did offer the crew the chance

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to go ahead and start doing some forward

183
00:07:32,230 --> 00:07:30,160
work on the new pump all that was

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supposed to be done on the second eda in

185
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the third eva that are planned for on

186
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monday and wednesday but the crew

187
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deferred and said we'll go ahead and

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00:07:40,790 --> 00:07:39,680
take care of that on monday uh there are

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00:07:42,070 --> 00:07:40,800
no rush to go ahead and get that done

190
00:07:43,990 --> 00:07:42,080
today because there's plenty of time to

191
00:07:45,749 --> 00:07:44,000
do it on monday so this was kind of a

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good stopping point for the crew sort of

193
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the first chapter

194
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of this spacewalk coming to a close as

195
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they got the old one the old pump taken

196
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care of so rick mastracchio who is the

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lead spacewalker today decided to go

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ahead and

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wrap up things and they will go ahead