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NASA-LLIS-0026
Lessons Learned - Critical Gaseous Helium (GHE) Purge Operations
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:05:40Z | |
| date available | 2017-09-04T17:05:40Z | |
| date copyright | 09/04/1992 | |
| date issued | 1992 | |
| identifier other | YCYCQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/129200 | |
| description abstract | Description of Driving Event: The launch operations area fuel cell servicing system (FCSS) LH2/GH2 system provides for the loading of LH2/GH2 to the orbiter at pads A and B. The LH2 FCSS low pressure sample panel and the fixed service structure FCSS GN2/GHe service panel are utilized for the helium sweep flow purge to the FCSS hydrogen vent stack. Three critical items are in the GN2/GHE service panel and two are located in the low pressure sample panel. Failure of a critical item will disable the sweep flow purge to the vent stack, which is performed prior to initiating hydrogen steady state venting from the dewar. | |
| language | English | |
| title | NASA-LLIS-0026 | num |
| title | Lessons Learned - Critical Gaseous Helium (GHE) Purge Operations | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1992 | |
| contenttype | fulltext | |
| subject keywords | Energetic Materials - Explosive/Propellant/Pyrotechnic | |
| subject keywords | Facilities | |
| subject keywords | Ground Equipment | |
| subject keywords | Ground Operations | |
| subject keywords | Hardware | |
| subject keywords | Pressure Vessels |
