In-Suit Light Exercise (ISLE) Prebreathe Protocol Peer Review Assessment

[rdale]

Good look at the new EVA prebreathe techniques that will be tested on this flight...

The performance of extravehicular activity (EVA) by National   
Aeronautics and Space Administration astronauts involves the risk of decompression sickness. This risk has been mitigated by the use of oxygen "prebreathe" to effectively wash out tissue nitrogen prior to each EVA. Now that the Space Shuttle Program (SSP) is being retired, high-pressure oxygen will become a limited resource. The In-Suit Light Exercise (ISLE) Prebreathe Protocol offers several potential benefits including its potential to save 6 pounds of oxygen per EVA. At the request of the NASA Engineering and Safety Center, the peer review convened on October 14, 2010. The major recommendation of the Review Committee was that the ISLE protocol was acceptable for operational use as a prebreathe option prior to EVA. The results from the peer review are contained in this document.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110007150_2011007443.pdf

Appendices including PPT presentation:

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110008237_2011008811.pdf

[Melroy Fan]

Thank you very much for posting these, Rob. I've been very interested in learning all I can about the ISLE protocol.

Greatly appreciated. 

[janmb]

For comparison, what procedure has been used for shuttle-based EVAs, such as for the Hubble servicing missions?

And what procedure is used for Russian ISS-based EVAs?