ENS 40738

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v t e ENS Event
06:30 May 9, 2004
Title	Failure of the High Voltage Uf6 Release Detection System
Event Description	The following information was obtained by the regulatee via facsimile: At 0130 [hrs. CDT] on 05-09-04, the Plant Shift Superintendent (PSS) was notified of a failure of the C-316 High Voltage UF6 Release Detection System. The High Voltage UF6 detection system was disabled by a computer malfunction. This High Voltage UF6 Release System is designed to activate alarms in the event of a UF6 release. The PSS declared the system inoperable and TSR [Technical Safety Requirement] LCO 2.3.4.4.A actions were implemented to post a continuous smoke watch in the affected area. The 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, as required by 10 CFR 76.120(c)(2)(i); 'An event in which equipment is disabled or fails to function as designed when 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 preestablished safe condition after an accident.' The equipment was required by TSR to be available and operable and no redundant equipment was available to perform the required safety function. The Senior NRC Resident Inspector has been notified of this event. The Automatic Data Processing (ADP) computer can be used to interface with the Process Gas Detection (PGD) system part of which is the High Voltage UF6 detection system. The PSS directed that the ADP be bypassed to isolate the fault from the system. The release detection system was tested satisfactorily and returned to service and the smoke watch was secured.

ENS 40738 +/-
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:+14.3 h0.596 days <br />0.0851 weeks <br />0.0196 months <br />)
Opened:	Matt Maurer 20:48 May 9, 2004
NRC Officer:	Howie Crouch
Last Updated:	May 9, 2004
40738 - 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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