scene composition: litho, frame 22
May 13, 2013
Categories: ISS

American astronauts Thomas Marschburn and Chris Cassidy went to the open space to determine the leak point of ammonia in the cooling system and probably to replace the pump that is the source of ammonia leak.

The astronauts detached PFCS (Power Flow Control Subassembly) pump block that is supposed to be the source of leak and examined the assembly in search for the leak point. Earlier in the process of detachments the astronauts found some “ammonia flakes” but this fact didn’t allow to judge about the leak point. “The place we removed PFCS block from looks very clean” – Cassidy says.

Cassidy and Marschburn transferred the block removed to the storing place and installed the spare pump block of ISS cooling system.

The spare pump block operates properly, the astronauts haven’t recoded any ammonia leak since the new block was installed.

comments

More from this category:
arGPoq4vwrI
May 8, 2015

Russian cargo vehicle Progress M-27M re-enterned the atmosphere and burned  in the region above the Pacific Ocean on Friday, May 8, at 05.04, Moscow time….

full story
0133
September 10, 2015

Dear space fans, Vegitel Tour Company announces group admission for next zero-g mixed group flight onboard IL-76 MDK scheduled for spring 2016. Do you still…

full story
0_SES-6_model_H
May 7, 2013

SES-6 European communication satellite that is to be launched by Russian Proton-M  rocket-booster and Briz-M upper stage was delivered to Baikonur Cosmodrome where the launch…

full story
Soyuz_docked
March 28, 2014

Soyuz TMA-12M spacecraft carrying new ISS mission crew successfully docked with the station in automatic mode, – MSC representative reported. Soyuz FG booster with Soyuz…

full story
Land-Roman
May 14, 2013

According to press-service of Mission Control Center,  the Soyuz TMA-07M landing capsule touched the ground at 06:31 Moscow time (02.31 GMT) on Tuesday morning in…

full story
1116724782
July 2, 2015

On July 1, 2015, in accordance with the decision taken by State Commission launching crews rolled-out Soyuz-U booster with Progress M-28M cargo vehicle from integration…

full story
ftqBYKj3BEE
October 23, 2014

Russian Cosmonauts ISS-41/42 mission commander Maksim Surayev and ISS-41/42 flight engineer Alexander Samokutyayev successfully performed the spacewalk and got beck to the ISS. The spacewalk…

full story
rollout
May 27, 2013

According to press-service of Gagarin Cosmonaut Trainin Center, on May 26, 2013, following the launch preparation plan Soyuz space rocket was rolled out and installed…

full story