Shuttle Emergency Undock Procedure

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gunsandrockets

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<Pure O2 for short durations ( 2 weeks or so) is not a problem for human. It is not a fire hazard at 5 psi since that is about the same O2 partial pressure as the Earth's atmosphere.><br /><br />What is the human problem with long duration pure oxygen at 5 psi?
 
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Huntster

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Thanks for the explanation S_G, the fire hazard was the part I was concerned about. Fire not being a problem at low psi makes more sense now. I admit I had assumed that the pad practice runs would use the same psi as would be found in orbital conditions, rather than 10 psi more. <div class="Discussion_UserSignature"> </div>
 
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