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NASA-LLIS-2696
Lessons Learned – Substation Arc Flash Mishap
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:09:20Z | |
| date available | 2017-09-04T17:09:20Z | |
| date copyright | 06/11/2010 | |
| date issued | 2010 | |
| identifier other | YMQKSCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/132824 | |
| description abstract | Abstract: On Monday, September 24, 2007, at approximately 12:50 pm Central Daylight Time (CDT), a worker suffered second degree burns to the hands as a result of exposure to an electrical arc flash. The arc flash was caused by an electrical short while servicing a kilowatt-hour meter; located at Stennis Space Centers Test Complex Area Building 4400. Since Worker 1 was hospitalized for inpatient care within 30 days of the incident, the incident was classified as a Type B Mishap in accordance with NPR 8621.1B, reference NASA IRIS incident number 2007-267-00006. The proximate (direct) causes leading to the mishap are listed below: 1. Meter Panel Assembly (MPA) being serviced by the worker was in an electrically energized state 2. Worker 1 opened MPA knife switches in preparation to review the kilowatt meter 3. Energized knife switch blades extended beyond plane of MPA cover opening 4. Worker 1 was not wearing leather protected, voltage rated gloves (PPE) 5. Worker 1 was not being monitored by another worker (i.e. buddy system) 6. Worker 1 placed metal MPA cover back onto the MPA enclosure 7. Metal MPA cover contacted the electrically energized knife switch blades causing electrical arc flash at MPA | |
| language | English | |
| title | NASA-LLIS-2696 | num |
| title | Lessons Learned – Substation Arc Flash Mishap | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2010 | |
| contenttype | fulltext |
