ENS 41378

From kanterella

Jump to navigation Jump to search

v t e ENS Event
16:08 Feb 6, 2005
Title	24 Hour Report of a Safety Equipment Failure
Event Description	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. This event is reportable as a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> event in accordance with 10 CFR 76.120.c.2.i. It was an event in which equipment is disabled or fails to function as designed when: a) The equipment is required by a TSR to prevent releases, prevent exposures to radiation and radioactive materials exceeding specified limits, mitigate the consequences of an accident, or restore this facility to a pre-established safe condition after an accident; b) The equipment is required by a TSR to be available and operable and either should have been operating or should be operated on demand, and, c) No redundant equipment is available and operable to perform the required safety function. The NRC Senior Resident Inspector has been notified of this event.

ENS 41378 +/-
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
v • d • e

v t e Emergency Notification System
Paducah Gaseous Diffusion Plant with 10 CFR 76.120(c)(2)
WEEKMONTHYEAR2014-05-08T15:24:00 [Table view]
[ENS list for Paducah Gaseous Diffusion Plant]

Retrieved from "https://kanterella.com/w/index.php?title=ENS_41378&oldid=1184474"

ENS Notification