NASA-LLIS-0851

Lessons Learned – GHe Purging of Hydrogen Systems

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T17:16:23Z
date available	2017-09-04T17:16:23Z
date copyright	04/01/2000
date issued	2000
identifier other	ZFTEQCAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std/handle/yse/139833
description abstract	Practice: Prior to venting a hydrogen (H₂) system, initiate a gaseous helium (GHe) sweep purge to evacuate air from the vent line. After venting operations are complete, initiate a second GHe sweep purge to evacuate the vent system of residual H₂. Use a flapper valve or check valve on the vent line to prevent air intrusion into the line during low or intermittent flow conditions.
language	English
title	NASA-LLIS-0851	num
title	Lessons Learned – GHe Purging of Hydrogen Systems	en
type	standard
page	3
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;2000
contenttype	fulltext