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NASA-LLIS-0035
Lessons Learned - Unprotected NASA Standard Initiators (NSI)
Year: 1992
Abstract: Description of Driving Event:
NASA standard initiators (NSI) are used to ignite a charge of boron potassium nitrate pellets, which begin the solid rocket booster (SRB) ignition sequence. These pellets start a pyrogen igniter and its igniter motor flame starts SRB propellent burning. NSI's can not be protected against inadvertant detonation while in excessive radio frequency fields. The electromagnetic interference may cause a premature firing of a NSI, possibly resulting in personnel injury/loss of life and damage to flight hardware or ground support equipment.
NASA standard initiators (NSI) are used to ignite a charge of boron potassium nitrate pellets, which begin the solid rocket booster (SRB) ignition sequence. These pellets start a pyrogen igniter and its igniter motor flame starts SRB propellent burning. NSI's can not be protected against inadvertant detonation while in excessive radio frequency fields. The electromagnetic interference may cause a premature firing of a NSI, possibly resulting in personnel injury/loss of life and damage to flight hardware or ground support equipment.
Subject: Energetic Materials - Explosive/Propellant/Pyrotechnic
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:46:59Z | |
| date available | 2017-09-04T16:46:59Z | |
| date copyright | 09/17/1992 | |
| date issued | 1992 | |
| identifier other | WDYCQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/110316 | |
| description abstract | Description of Driving Event: NASA standard initiators (NSI) are used to ignite a charge of boron potassium nitrate pellets, which begin the solid rocket booster (SRB) ignition sequence. These pellets start a pyrogen igniter and its igniter motor flame starts SRB propellent burning. NSI's can not be protected against inadvertant detonation while in excessive radio frequency fields. The electromagnetic interference may cause a premature firing of a NSI, possibly resulting in personnel injury/loss of life and damage to flight hardware or ground support equipment. | |
| language | English | |
| title | NASA-LLIS-0035 | num |
| title | Lessons Learned - Unprotected NASA Standard Initiators (NSI) | 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 | Explosives Handling | |
| subject keywords | Flight Equipment | |
| subject keywords | Ground Equipment | |
| subject keywords | Ground Operations | |
| subject keywords | Hardware | |
| subject keywords | Hazardous/Toxic Waste/Materials | |
| subject keywords | Industrial Operations | |
| subject keywords | Launch Process | |
| subject keywords | Launch Vehicle | |
| subject keywords | Safety & Mission Assurance |