ENS 44664

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v t e ENS Event
09:08 Nov 18, 2008
Title	Fire Water Sprinkler System Out of Service
Event Description	At 0308 CST, on 11/18/2008, the Plant Shift Superintendent was notified that the C-337 High Pressure Fire Water (HPFW) Sprinkler System D-9 had been inspected by Fire Services and six sprinkler heads had visible corrosion on them. The system configuration was evaluated using EN-C-822-99-047, 'Effects of Impaired Sprinkler Heads on System Operability' and determined that with these heads impaired, a portion of the building would not have sufficient sprinkler coverage. The HPFW system is required to be operable according to TSR LCO 2.4.4.5. HPFW system D-9 was declared inoperable and TSR LCO 2.4.4.5 Required Action B was implemented for the area without sprinkler coverage. Based on past testing results, there is a possibility that the heads would have been able to perform their specified safety function. Once the heads are removed from the system, testing will be performed to determine the true affect on operability. This event is reportable under 10 CFR 76.120(c)(2) as an event in which equipment required by the TSR is disabled or fails to function as designed. The NRC Senior Resident Inspector has been notified of this event. The site has implemented hourly fire patrols while this impairment is in affect. * * RETRACTION FROM TONY HUDSON TO HOWIE CROUCH @1536 EST ON 11/21/08 * * * The affected sprinkler heads were removed and subjected to testing in the plant laboratory. A total of nine heads (three of these heads were previously identified with corrosion) were removed and tested with five of the nine actuating as designed. Using these results, the plant's fire protection engineer concluded that adequate sprinkler coverage existed prior to the discovery and the system would have performed as designed to a fire demand. The licensee has notified the NRC Resident Inspector. Notified R2DO (Guthrie) and NMSS EO (Smith).

ENS 44664 +/- *RETRACTED*
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:+4.18 h0.174 days <br />0.0249 weeks <br />0.00573 months <br />)
Opened:	Kevin Beasley 13:19 Nov 18, 2008
NRC Officer:	Mark Abramovitz
Last Updated:	Nov 21, 2008
44664 - 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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