ENS 43305: Difference between revisions
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| event date = 04/16/2007 19:15 CDT | | event date = 04/16/2007 19:15 CDT | ||
| last update date = 04/17/2007 | | last update date = 04/17/2007 | ||
| title = Large Water Leak | | title = Large Water Leak on High Pressure Fire Water System | ||
| event text = At 1915, on 04/16/07, the Plant Shift Superintendent was notified of a large water leak on High Pressure Fire Water system. This system provides water for fire suppression to the plants process buildings. An alarm was received indicating a drop in the level of High Pressure Fire Water (HPFW) elevated tank. The buildings were contacted to look for a large water leak and the leak was quickly located inside the C-337 process building. The exact system leaking was not apparent as the leak was under the building concrete floor. To stop the leak the | | event text = At 1915, on 04/16/07, the Plant Shift Superintendent was notified of a large water leak on High Pressure Fire Water system. This system provides water for fire suppression to the plants process buildings. An alarm was received indicating a drop in the level of High Pressure Fire Water (HPFW) elevated tank. The buildings were contacted to look for a large water leak and the leak was quickly located inside the C-337 process building. The exact system leaking was not apparent as the leak was under the building concrete floor. To stop the leak the | ||
HPFW pumps supporting the system were shutdown and the sectional valves outside the building were closed. This action made the HPFW system for all process buildings inoperable. LCO actions 2.4.4.8 and 2.4.4.6 were entered. The leak was determined to be on C-337 system C-12 and this system and the two adjacent systems were isolated and all other previously isolated valves were reopened. The HPFW pumps were restarted and the HPFW elevated tank was refilled to the TSR required level. These actions restored HPFW operability to the other areas in the plant at 2101 hours. TSR required hourly fire patrols were initiated for the affected area in C-337. The leak is located on an underground eight inch header under the alarm and actuation controls for system C-12 inside the building. | HPFW pumps supporting the system were shutdown and the sectional valves outside the building were closed. This action made the HPFW system for all process buildings inoperable. LCO actions 2.4.4.8 and 2.4.4.6 were entered. The leak was determined to be on C-337 system C-12 and this system and the two adjacent systems were isolated and all other previously isolated valves were reopened. The HPFW pumps were restarted and the HPFW elevated tank was refilled to the TSR required level. These actions restored HPFW operability to the other areas in the plant at 2101 hours. TSR required hourly fire patrols were initiated for the affected area in C-337. The leak is located on an underground eight inch header under the alarm and actuation controls for system C-12 inside the building. | ||
Revision as of 22:16, 1 March 2018
| Where | |
|---|---|
| Paducah Gaseous Diffusion Plant Paducah, Kentucky (NRC Region 2) | |
| License number: | Gdp-1 |
| Reporting | |
| 10 CFR 76.120(c)(2) | |
| Time - Person (Reporting Time:+11.35 h0.473 days <br />0.0676 weeks <br />0.0155 months <br />) | |
| Opened: | Billy Wallace 11:36 Apr 17, 2007 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Apr 17, 2007 |
| 43305 - NRC Website | |