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NASA-LLIS-0443
Lessons Learned - High Voltage Electric Circuits
Year: 1992
Abstract: Description of Driving Event:
During the removal of power to a transformer prior to it being serviced, an accidental 2400 Volt line to ground short circuit was created resulting in minor injury to a technician and minor hardware damage. The major contributing factor to this mishap was the use of a drawing that was not adequately checked after additions and changes had been made to the system. The secondary factor was that the technician did not test the voltage on the line side of the potential transformer compartment to verify that the bus was in fact de-energized.
During the removal of power to a transformer prior to it being serviced, an accidental 2400 Volt line to ground short circuit was created resulting in minor injury to a technician and minor hardware damage. The major contributing factor to this mishap was the use of a drawing that was not adequately checked after additions and changes had been made to the system. The secondary factor was that the technician did not test the voltage on the line side of the potential transformer compartment to verify that the bus was in fact de-energized.
Subject: Configuration Management
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:43:46Z | |
| date available | 2017-09-04T15:43:46Z | |
| date copyright | 33924 | |
| date issued | 1992 | |
| identifier other | PNBEQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/46059 | |
| description abstract | Description of Driving Event: During the removal of power to a transformer prior to it being serviced, an accidental 2400 Volt line to ground short circuit was created resulting in minor injury to a technician and minor hardware damage. The major contributing factor to this mishap was the use of a drawing that was not adequately checked after additions and changes had been made to the system. The secondary factor was that the technician did not test the voltage on the line side of the potential transformer compartment to verify that the bus was in fact de-energized. | |
| language | English | |
| title | NASA-LLIS-0443 | num |
| title | Lessons Learned - High Voltage Electric Circuits | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1992 | |
| contenttype | fulltext | |
| subject keywords | Configuration Management | |
| subject keywords | Energy | |
| subject keywords | Logistics | |
| subject keywords | Safety & Mission Assurance |