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NASA-LLIS-0168
Lessons Learned - Hydrogen Detonation in Propellant Piping Systems
Year: 1993
Abstract: Description of Driving Event:
A three inch diameter stainless steel manifold containing hydrogen (0.27 lbs) and air (0.26 lbs) at 350 psia ruptured during experimental operation. The hardware was off-the-shelf, slightly modified, pre-safety checked and analyzed by the supply vendor. The test apparatus was in an altitude tank at simulated altitude conditions at the time of the mishap. Damage was restricted to the manifold and some of the experimental package valves.
The cause of the rupture was a detonation of an unplanned hydrogen and air mixture inside the manifold. A contributing factor was the deviation from preplanned test procedure by the test crew while attempting to make the device work.
The investigation team determined that the principal cause of the mishap was the lack of backflow prevention devices in the hydrogen and air supplies to the test package. That deficiency permitted the accumulation of the detonation charge within the manifold.
A three inch diameter stainless steel manifold containing hydrogen (0.27 lbs) and air (0.26 lbs) at 350 psia ruptured during experimental operation. The hardware was off-the-shelf, slightly modified, pre-safety checked and analyzed by the supply vendor. The test apparatus was in an altitude tank at simulated altitude conditions at the time of the mishap. Damage was restricted to the manifold and some of the experimental package valves.
The cause of the rupture was a detonation of an unplanned hydrogen and air mixture inside the manifold. A contributing factor was the deviation from preplanned test procedure by the test crew while attempting to make the device work.
The investigation team determined that the principal cause of the mishap was the lack of backflow prevention devices in the hydrogen and air supplies to the test package. That deficiency permitted the accumulation of the detonation charge within the manifold.
Subject: Energetic Materials - Explosive/Propellant/Pyrotechnic
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:33:59Z | |
| date available | 2017-09-04T17:33:59Z | |
| date copyright | 07/01/1993 | |
| date issued | 1993 | |
| identifier other | DDZCQCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std/handle/yse/156807 | |
| description abstract | Description of Driving Event: A three inch diameter stainless steel manifold containing hydrogen (0.27 lbs) and air (0.26 lbs) at 350 psia ruptured during experimental operation. The hardware was off-the-shelf, slightly modified, pre-safety checked and analyzed by the supply vendor. The test apparatus was in an altitude tank at simulated altitude conditions at the time of the mishap. Damage was restricted to the manifold and some of the experimental package valves. The cause of the rupture was a detonation of an unplanned hydrogen and air mixture inside the manifold. A contributing factor was the deviation from preplanned test procedure by the test crew while attempting to make the device work. The investigation team determined that the principal cause of the mishap was the lack of backflow prevention devices in the hydrogen and air supplies to the test package. That deficiency permitted the accumulation of the detonation charge within the manifold. | |
| language | English | |
| title | NASA-LLIS-0168 | num |
| title | Lessons Learned - Hydrogen Detonation in Propellant Piping Systems | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1993 | |
| contenttype | fulltext | |
| subject keywords | Energetic Materials - Explosive/Propellant/Pyrotechnic | |
| subject keywords | Test & Verification |