Author Topic: LIVE: Expedition 24 third spacewalk (ETCS PM R&R EVA-2) - August 11, 2010  (Read 99106 times)

Offline psloss

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Just about finished with the steps in the EMU prebreathe checklist.  The crew lock hatch is closed; the EV crew work from the crewlock depress cue card when flight control team gives a go for depress.
« Last Edit: 08/11/2010 11:49 am by psloss »

Offline Chris Bergin

Thanks to the departing Roger for the early help.

Waiting for a go to depress (love Rob Navias' way of treating that as a major event in itself "The EVA community....the stage is set" - coolest PAO, ever :)).
« Last Edit: 08/11/2010 11:54 am by Chris Bergin »
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Offline Chris Bergin

And thanks for Philip being around too :)

Go to depress:
« Last Edit: 08/11/2010 11:57 am by Chris Bergin »
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Offline psloss

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Depress pump is on, and isolation valve is open to begin depress of the crew lock.  Going down to 5 psi temporary holding point.

Monitoring the pressure in the crew lock and the EV crew is monitoring their suit pressure.
« Last Edit: 08/11/2010 11:59 am by psloss »

Offline Chris Bergin

11.5 psi
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Offline psloss

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Crew lock pressure down to about 8 psi; the depress procedure is budgeted for about 30 minutes.  The post depress steps begin with switching the suits to battery power, which begins the PET clock.
« Last Edit: 08/11/2010 12:03 pm by psloss »

Offline Chris Bergin

Helmetcam numbers.

Doug will be on 19
Tracy on 20
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Offline psloss

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At 5 psi, depress pump isolation valve closed.  Doing a suit check before resuming depress.
« Last Edit: 08/11/2010 12:07 pm by psloss »

Offline Chris Bergin

Tracking towards the start of a scheduled six hour EVA.
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Offline psloss

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Depress has resumed.

Offline Chris Bergin

Back into depress following the 5psi suit check.
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Offline psloss

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Crew lock pressure down to 3 psi; I believe they opened the pressure equalization valve at ~2 psi prior to the last EVA.

Edit, correction: PEV already open, the depress dump iso valve is closed at 2 psi.  Doing that now.
« Last Edit: 08/11/2010 12:14 pm by psloss »

Offline Chris Bergin

David Beaver - EVA officer - in the red tie.
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Offline psloss

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Getting ready to open the hatch when the pressure differential is OK.  (Not yet -- crew lock pressure still ~1 psi.)  Then they'll close the PEV and at that point I believe that Shannon will turn over the IV duties to the ground.
« Last Edit: 08/11/2010 12:19 pm by psloss »

Offline Chris Bergin

SSRMS and MSB ready to support
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Offline Chris Bergin

PM QDs - focus is on M3:
« Last Edit: 08/11/2010 12:21 pm by Chris Bergin »
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Offline psloss

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Waiting for the hatch delta-P to be less than 0.5 psi...apparently the gauge is right at 0.5...waiting a little longer for it to drop below.
« Last Edit: 08/11/2010 12:25 pm by psloss »

Offline psloss

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OK, go to open the crew lock hatch.

Offline psloss

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PEV closed, handoff to ground IV.  Taking switch power to batt.
« Last Edit: 08/11/2010 12:27 pm by psloss »

Offline psloss

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Suit power to battery at about 7:27 am Central, starting the PET clock.

Still working in the post depress checklist prior to egressing the crew lock.
« Last Edit: 08/11/2010 12:28 pm by psloss »

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