Feeds

ISS cooling pump refuses to come quietly

Frustrating spacewalk for NASA plumbers

Build a business case: developing custom apps

Spacewalkers Tracy Caldwell Dyson and Doug Wheelock have spent a frustrating eight hours, three minutes* outside the International Space Station attemping to swap out the ammonia pump which failed last Saturday night and knocked out half of the station's cooling system.

Caldwell Dyson and Wheelock outside the ISS. Pic: NASA TVThe pair's EVA officially began at 11:19 GMT. The original plan was to replace the clapped-out unit on the orbiting outpost's S1 truss with a spare "oven-sized" pump stowed on an external stowage platform attached to the Quest airlock.

NASA hoped that the pair could then carry out a second EVA on Wednesday, to connect the pump's fluid and electrical lines.

However, during today's EVA, "an ammonia leak in the final line that needed to be disconnected" from the old pump prompted NASA to ask Caldwell Dyson and Wheelock to "reconnect the line on the pump module and install a spool positioning device to maintain proper pressure internal to the ammonia line".

As a result, the old pump is still in position, as NASA ponders just how to deal with the problem. It notes: "Teams on the ground are evaluating the impact of the leak on plans to replace the failed pump, as well as possible fixes for the leak. The completion of the process will most likely require at least two additional spacewalks."

The agency has updates here. ®

Bootnote

* "The longest International Space Station-based spacewalk in history and the sixth longest in human spaceflight history."

The Essential Guide to IT Transformation

More from The Register

next story
Just TWO climate committee MPs contradict IPCC: The two with SCIENCE degrees
'Greenhouse effect is real, but as for the rest of it ...'
Asteroid's DINO KILLING SPREE just bad luck – boffins
Sauricide WASN'T inevitable, reckon scientists
Flamewars in SPAAACE: cooler fires hint at energy efficiency
Experiment aboard ISS shows we should all chill out for cleaner engines
Boffins discuss AI space program at hush-hush IARPA confab
IBM, MIT, plenty of others invited to fill Uncle Sam's spy toolchest, but where's Google?
NASA Mars rover FINALLY equals 1973 Soviet benchmark
Yet to surpass ancient Greek one, however
Famous 'Dish' radio telescope to be emptied in budget crisis: CSIRO
Radio astronomy suffering to protect Square Kilometre Array
BEST BATTERY EVER: All lithium, all the time, plus a dash of carbon nano-stuff
We have found the Holy Grail (of batteries) - boffins
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Backing up Big Data
Solving backup challenges and “protect everything from everywhere,” as we move into the era of big data management and the adoption of BYOD.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
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.