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NASA-LLIS-0110
Lessons Learned - Vacuum Read-out Stations for the MLP's LH2 system
Year: 1992
Abstract: Description of Driving Event:
The LH2 system maintenance includes a monthly vacuum reading in the annulus space in the overhead vacuum-jacketed (VJ) high point bleed and LH2 fill lines. Access to the read-out ports in the GH2 fill line on side 1 of the MLPS is precarious. There are not adequate tie-off points for body harness and lanyards. The readout ports are 10-12 feet above the floor grating. If a technician uses a ladder for access, or climbs on existing structures to make the reading, he/she is within inches of exterior handrails and above them. This places him/her about 40 feet above the vab floor or the pad surface.
The LH2 system maintenance includes a monthly vacuum reading in the annulus space in the overhead vacuum-jacketed (VJ) high point bleed and LH2 fill lines. Access to the read-out ports in the GH2 fill line on side 1 of the MLPS is precarious. There are not adequate tie-off points for body harness and lanyards. The readout ports are 10-12 feet above the floor grating. If a technician uses a ladder for access, or climbs on existing structures to make the reading, he/she is within inches of exterior handrails and above them. This places him/her about 40 feet above the vab floor or the pad surface.
Subject: Facilities
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:37:06Z | |
| date available | 2017-09-04T15:37:06Z | |
| date copyright | 08/28/1992 | |
| date issued | 1992 | |
| identifier other | OTYCQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/38958 | |
| description abstract | Description of Driving Event: The LH2 system maintenance includes a monthly vacuum reading in the annulus space in the overhead vacuum-jacketed (VJ) high point bleed and LH2 fill lines. Access to the read-out ports in the GH2 fill line on side 1 of the MLPS is precarious. There are not adequate tie-off points for body harness and lanyards. The readout ports are 10-12 feet above the floor grating. If a technician uses a ladder for access, or climbs on existing structures to make the reading, he/she is within inches of exterior handrails and above them. This places him/her about 40 feet above the vab floor or the pad surface. | |
| language | English | |
| title | NASA-LLIS-0110 | num |
| title | Lessons Learned - Vacuum Read-out Stations for the MLP's LH2 system | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1992 | |
| contenttype | fulltext | |
| subject keywords | Facilities | |
| subject keywords | Ground Operations | |
| subject keywords | Hardware | |
| subject keywords | Safety & Mission Assurance |