درباره ما
NASA-LLIS-0851
Lessons Learned – GHe Purging of Hydrogen Systems
Year: 2000
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.
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.
Show full item record
| 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 |