ENS 42972

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v t e ENS Event
14:59 Nov 7, 2006
Title	Process Gas Leak Detector Failure
Event Description	At 0859 on 11/7/2006, the Plant Shift Superintendent (PSS) was notified of a failure of the C-337A process gas leak detector (PGLD) YE-613-21 to alarm during TSR [Technical Safety Requirements] surveillance 2.2.4.1-1. TSR surveillance 2.2.4.1-1 is a quarterly test to verify that the PGLD will detect a UF6 release, alarm, and alert personnel. PGLD YE-613-21 provides coverage for the north section of the facility UF6 piping trench. Staff review of the failure, suggest that PGLD YE-613-21 may have failed prior to being removed from service to perform the 11/7/06 TSR surveillance. PGLD YE-613-21 was replaced and tested satisfactorily. Additional testing and engineering review of PGLD YE-613-21 is being performed to ensure the operability of the PGLD and to develop any needed corrective actions. 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 10CFR 76.120(c)(2)(i). This is 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 have 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. PGDP Problem Report No. ATRC-06-3670; PGDP Event Report No. PAD-2006-10; NRC Worksheet No. 42972.

ENS 42972 +/-
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:+17.88 h0.745 days <br />0.106 weeks <br />0.0245 months <br />)
Opened:	Matt Maurer 08:52 Nov 8, 2006
NRC Officer:	Mike Ripley
Last Updated:	Nov 8, 2006
42972 - 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]

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