ML20134H030

Special Rept:On 961009,fire Detection Zones 2-16 & 2-16P Were Declared Inoperable.Fire Watch Once Per Eight H Has Been Established & Will Remain in Effect Until Detection Sys Is Restored

ML20134H030
Person / Time
Site:	LaSalle
Issue date:	11/04/1996
From:	Ray D COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9611130496
Download: ML20134H030 (2)

Text

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, Comnumwcalth Illium (bml).my IAalle Generating Nation

. 2601 North 21st Itoad Marwilicw II.61MIC57

'Iel8153574~'61 November 4,1996 United States Nuclear Regulatory Commission  !

Attention: Document Control Desk Washington, D.C. 20555 This Special Report is submitted in accordance with LaSalle Unit 1 and 2 [

Operating Licenses NPF-11 and NPF-18, Appendix A, and Technical Specifications 3.3.7.9 and 6.6.C.

Technical Specification 3.3.7.9 requires as a minimum, the fire detection  ;

instrumentation for each fire detection zone of Unit 1 and Unit 2 shown in Table 3.3.7.9-1 shall be OPERABLE whenever the equipment protected by l

the fire detection instrument is required to be OPERABLE.

. At 1040 hours0.012 days <br />0.289 hours <br />0.00172 weeks <br />3.9572e-4 months <br />, on October 9,1996, fire detection zones 2-16 and 2-16P f

were declared inoperable. The zones were impaired for a period greater  !

than fourteen days to support activities performed during the Unit 2 I Refueling Outage (L2R07). These detection zones are located in the Unit 2 drywell at elevations 740',749' 761' and 777'. During the Refueling Outage, a number of activities such as cutting and welding have been and will i continue to be performed. These activities have in the past caused the I detection zones to alarm due to the products of combustion generated. The increased frequency of these false alarms has the potential to desensitize workers to fire alarms.

In accordance with the Action Statement of Technical Specification d.3.7.9, a once per eight hour Fire Watch has been established. This watch will i

remain in effect until the detection system is restored. This compensatory l measure along with the additional fire protection measures provided when activities such as cutting and welding occur and the oversight of the Fire  ;

Protection Administrative Program ensure the level of fire protection will not  ;

be reduced. i l

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- If there are any questions or comments conceming this letter, please refer j

. them to me at (815) 357-6761, extension 2212.  ;

Resp i

i D.J. Ray I Station Manager LaSalle County Station i I

cc: A. B. Beach, NRC Region ill Administrator

' i M. P. Huber, NRC Senior Resident inspector - LaSalle D. M. Skay, Project Manager - NRR - LaSalle F. Niziolek, Office of Nuclear Facility Safety - lDNS '

l DCD - Licensing (Hardcopy: Electronic: )

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