Feeds

NASA 'nauts wrap ISS pump job

'Healthy' new cooling unit in place

Top 5 reasons to deploy VMware with Tegile

Spacewalkers Tracy Caldwell Dyson and Doug Wheelock have successfully installed a new ammonia pump module to replace the one which failed on 31 July, taking out half of the International Space Stations's cooling system.

Tracy Caldwell Dyson (left) and Doug Wheelock during today's spacewalk. Pic: NASA TVCaldwell Dyson (seen left in pic) and Wheelock's EVA officially began at 10:20 GMT. They moved the spare pump unit from an external stowage platform outide the orbiting outpost's Quest airlock and bolted it into place on the ISS's S1 truss.

NASA says the replacement unit - attached to the platform back in July 2006 during Discovery's STS-121 mission - was in "healthy condition" following electrical hook-up.

The agency adds: "After a pressure check and more fluid cable connections, ammonia began to flow into the module."

It's taken Caldwell Dyson and Wheelock three spacewalks to replace the pump. The first on 7 August lasted an epic 8 hours, 3 minutes, while the second on 11 August was 7 hours, 26 minutes. Today's EVA ended at 17:40 GMT, after 7 hours and 20 minutes.

When the old pump clapped out, ISS ground controllers "powered down numerous station systems and readjusted them to provide maximum redundancy" for the half of the cooling set-up which was still functioning. NASA has details of the ammonia-driven chilling equipment on page 63 of its ISS main systems guide, right here (pdf). ®

Internet Security Threat Report 2014

More from The Register

next story
Bond villains lament as Wicked Lasers withdraw death ray
Want to arm that shark? Better get in there quick
Renewable energy 'simply WON'T WORK': Top Google engineers
Windmills, solar, tidal - all a 'false hope', say Stanford PhDs
SEX BEAST SEALS may be egging each other on to ATTACK PENGUINS
Boffin: 'I think the behaviour is increasing in frequency'
Reuse the Force, Luke: SpaceX's Elon Musk reveals X-WING designs
And a floating carrier for recyclable rockets
The next big thing in medical science: POO TRANSPLANTS
Your brother's gonna die, kid, unless we can give him your, well ...
NASA launches new climate model at SC14
75 days of supercomputing later ...
Britain's HUMAN DNA-strewing Moon mission rakes in £200k
3 days, and Kickstarter moves lander 37% nearer takeoff
Simon's says quantum computing will work
Boffins blast algorithm with half a dozen qubits
prev story

Whitepapers

Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
10 threats to successful enterprise endpoint backup
10 threats to a successful backup including issues with BYOD, slow backups and ineffective security.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Protecting users from Firesheep and other Sidejacking attacks with SSL
Discussing the vulnerabilities inherent in Wi-Fi networks, and how using TLS/SSL for your entire site will assure security.