ENS 41378: Difference between revisions
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StriderTol (talk | contribs) (Created page by program invented by Mark Hawes) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
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| event date = 02/06/2005 10:08 CST | | event date = 02/06/2005 10:08 CST | ||
| last update date = 02/06/2005 | | last update date = 02/06/2005 | ||
| title = 24 Hour Report | | title = 24 Hour Report of a Safety Equipment Failure | ||
| event text = The licensee provided the following information via facsimile: | | event text = The licensee provided the following information via facsimile: | ||
At 1008, on 2-06-05, the Plant Shift Superintendent [PSS] was notified that at the C-360 Toll and Transfer Facility on autoclave 4, the vent line block valve, XV-434, failed to close when the control switch was operated to the closed position. A check of the valve indicator showed that the valve moved to approximately 75% of the closed position. This valve is a single isolation point (no redundant valve) for two TSR [Technical and Safety Requirements] systems: (1) The Autoclave Steam Pressure Control System and (2) The Autoclave Water Inventory Control System. The autoclave was in mode 5, an applicable TSR mode for both systems. The PSS declared the systems inoperable and TSR LCOs 2.1.3.3 and 2.1.4.3 were implemented to remove the autoclave from service and place it in mode 2 within one hour. | At 1008, on 2-06-05, the Plant Shift Superintendent [PSS] was notified that at the C-360 Toll and Transfer Facility on autoclave 4, the vent line block valve, XV-434, failed to close when the control switch was operated to the closed position. A check of the valve indicator showed that the valve moved to approximately 75% of the closed position. This valve is a single isolation point (no redundant valve) for two TSR [Technical and Safety Requirements] systems: (1) The Autoclave Steam Pressure Control System and (2) The Autoclave Water Inventory Control System. The autoclave was in mode 5, an applicable TSR mode for both systems. The PSS declared the systems inoperable and TSR LCOs 2.1.3.3 and 2.1.4.3 were implemented to remove the autoclave from service and place it in mode 2 within one hour. | ||
Revision as of 22:21, 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:+1.33 h0.0554 days <br />0.00792 weeks <br />0.00182 months <br />) | |
| Opened: | Tony Hudson 17:28 Feb 6, 2005 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Feb 6, 2005 |
| 41378 - NRC Website | |