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NASA-LLIS-0054
Lessons Learned - Excessive Release of Nitrogen Tetroxide (N2O4); Public Address Statements; Pinhole Leaks in SCAPE Suits
Year: 1992
Abstract: Description of Driving Event:
The nitrogen tetroxide (N2O4) vapor release, which occurred during a storage tank relief valve changeout, greatly exceeded the "one gallon quantity" specified in the task OMI V2197, sequence 03- 014. Also, sequence 03-074 states, "total amount of commodity involved: 1 gallon." Post incident calculations estimated the total release to have been 28 gallons. The vapor cloud of N2O4 far exceeded the 700-foot clear area called out in the OMI. Unless the magnitude of the release is accurately predicted, the downwind clear area cannot be properly established and personnel may be endangered.
The nitrogen tetroxide (N2O4) vapor release, which occurred during a storage tank relief valve changeout, greatly exceeded the "one gallon quantity" specified in the task OMI V2197, sequence 03- 014. Also, sequence 03-074 states, "total amount of commodity involved: 1 gallon." Post incident calculations estimated the total release to have been 28 gallons. The vapor cloud of N2O4 far exceeded the 700-foot clear area called out in the OMI. Unless the magnitude of the release is accurately predicted, the downwind clear area cannot be properly established and personnel may be endangered.
Subject: Communication Systems
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:37:38Z | |
| date available | 2017-09-04T16:37:38Z | |
| date copyright | 01/20/1992 | |
| date issued | 1992 | |
| identifier other | VFYCQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/101114 | |
| description abstract | Description of Driving Event: The nitrogen tetroxide (N2O4) vapor release, which occurred during a storage tank relief valve changeout, greatly exceeded the "one gallon quantity" specified in the task OMI V2197, sequence 03- 014. Also, sequence 03-074 states, "total amount of commodity involved: 1 gallon." Post incident calculations estimated the total release to have been 28 gallons. The vapor cloud of N2O4 far exceeded the 700-foot clear area called out in the OMI. Unless the magnitude of the release is accurately predicted, the downwind clear area cannot be properly established and personnel may be endangered. | |
| language | English | |
| title | NASA-LLIS-0054 | num |
| title | Lessons Learned - Excessive Release of Nitrogen Tetroxide (N2O4); Public Address Statements; Pinhole Leaks in SCAPE Suits | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1992 | |
| contenttype | fulltext | |
| subject keywords | Communication Systems | |
| subject keywords | Emergency Preparedness | |
| subject keywords | Energetic Materials - Explosive/Propellant/Pyrotechnic | |
| subject keywords | Facilitie | |
| subject keywords | Hazardous/Toxic Waste/Materials | |
| subject keywords | Industrial Operations | |
| subject keywords | Personal Protective Equipment | |
| subject keywords | Safety & Mission Assurance |