ENS 42144

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v t e ENS Event
19:30 Nov 15, 2005
Title	Reportable Incident Due to Deviation from Technical Specification Requirements
Event Description	At 1216 CST, on 11-15-05 the C-333, Unit 4, Cell 8, Process Gas Leak Detection (PGLD) system was declared inoperable by the Plant Shift Superintendent (PSS) in order to perform maintenance. Due to the inoperability of the system, a [Technical Specification Requirement] TSR required continuous smoke watch was put into place according to LCO 2.4.4.1. At 1330 CST a Tornado Warning was issued by the National Weather Service (NWS) for the area affecting the plant and surrounding area that remained in affect until 1400 CST. Based on the NWS warning, radar indications, and visual observations from on-site spotters, the PSS ordered the activation of the plants Take Cover Signal and [Public Address] PA announcements were made instructing the plant population to shelter in their designated 'take cover areas'. Upon activation of the Take Cover Signal, the individual performing the TSR required smoke watch at C-333, Unit 4, Cell 8, discontinued the smoke watch and reported to the 'take cover area' as required by plant emergency procedures. At this time, the PSS entered TSR 1.6.4, 'Conditions Outside TSR' due to discontinuing the TSR required smoke watch. TSR 1.6.4 requires that in an emergency, if a situation develops that is not addressed by the TSR, operations personnel should use their training and expertise to take actions to correct or mitigate the situation. In compliance with the TSR, the PSS instructed the Cascade Coordinator to reduce the operating pressure in the area affected by the Unit 4, Cell 8, PGLD outage, which would place the equipment in a non-applicable TSR mode of operation. Operating pressures were being reduced when the National Weather Service lifted the Tornado Warning at 1400 CST. At this time, the PSS lifted the Take Cover order and the TSR required smoke watch was put back into place at Unit 4, Cell 8 at 1405 CST. At this time the plant came into compliance with TSR LCO 2.4.4.1 and exited TSR 1.6.4. This event is being reported under the requirements of TSR 1.6.4, 'If emergency action is taken, both a verbal and written notification shall be made in accordance with 10 CFR 76.120'. The NRC Senior Resident Inspector has been notified of this event.

ENS 42144 +/-
Where
Paducah Gaseous Diffusion Plant Paducah, Kentucky (NRC Region 2)
License number:	GDP-1
Reporting

Other Unspec Reqmnt
Time - Person (Reporting Time:+17.22 h0.718 days <br />0.102 weeks <br />0.0236 months <br />)
Opened:	W.F. Cage 12:43 Nov 16, 2005
NRC Officer:	John Knoke
Last Updated:	Nov 16, 2005
42144 - NRC Website
v • d • e

v t e Emergency Notification System
Paducah Gaseous Diffusion Plant with Other Unspec Reqmnt
WEEKMONTHYEAR2013-11-17T20:17:00 [Table view]
[ENS list for Paducah Gaseous Diffusion Plant]

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