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NASA-LLIS-0564
Lessons Learned –
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T16:26:41Z | |
| date available | 2017-09-04T16:26:41Z | |
| date copyright | 09/10/1997 | |
| date issued | 1997 | |
| identifier other | UBCEQCAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/89919 | |
| description abstract | Description of Driving Event: An electrical mishap occurred on January 30, 1997, at the Water Deluge Pumping Substation 202 at the Cryogenic Transfer Area at the Stennis Space Center (SSC). Electrical Technicians were working under a Troubleshooting Incident Report (TIR) and standard operating procedures as required. The troubleshooting was necessary to determine why the "Run" indicating lights for Deluge Pumps No. 2 and No. 3 (of four) were reversed from actual pump operation. While attempting to also check Pump No. 4, the mishap occurred when the technician jumpered terminals at a field wiring terminal block in the rear of the north switchgear section, believing they were the "Pump No. 4 Run" contact. An electric arc caused second degree burns on the hands and third degree burns to the left index finger of the technician. The arc occurred because the two terminals were a 480 VAC tap from the switchgear incoming bus. When the terminals were shorted with the jumper, fault current flowed, and the electric arc formed as the circuit was interrupted. | |
| language | English | |
| title | NASA-LLIS-0564 | num |
| title | Lessons Learned – | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1997 | |
| contenttype | fulltext |
