ML20149K779

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Special Rept:On 960205,fire Rated Barrier Inoperable for More than Seven Days.Caused by Removal of Fire Seal in Electrical Floor to Install Structural Steel to Support Panel 1PA07J.Fire Watch Formed.Barrier Restored 960207
ML20149K779
Person / Time
Site: LaSalle Constellation icon.png
Issue date: 02/13/1996
From: Ray D
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9602220162
Download: ML20149K779 (2)


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    • /j h- Commonwealth filiwn Company l.aSalle Generating St.ition 2N11 North 21st Road 51.trwilles. II. 61341-9757 Tcl HI 5-357&61 February 13,1996 United States Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Document Control Desk This Special Report is submitted in accordance with LaSalle Unit 1 Operating Licenses NPF-11, Appendix A, and Technical Specifications 3.7.6.

and 6.6.C.

Technical Specification 3.7.6. requires that all fire rated assemblies and all sealing devices in fire rated assemblies (fire doors, fire windows, fire dampers, cable and piping penetration seals and ventilation seals) separating safety-related fire areas or separating portions of redundant systems impoitant to safe shutdown within a fire area, shall be OPERABLE at all times.

On February 5,1996 at 0840 hours0.00972 days <br />0.233 hours <br />0.00139 weeks <br />3.1962e-4 months <br />, the fire rated barrier separating Fire Zone 4El-2 frorc. Fire Zone 4F3 was inoperable for a period greater than 7 days. These fire zones are located in the Unit 1 Auxiliary Building at elevations 73 l' and 710'-6" respectively. The fire seal installed in electrical floor penetration AB2088 was removed in order to install structural steel in the opening.

The structural steel was needed to support the installation of panel 1PA07J which is being installed as part of the Turbine Supervisory Modification.

A Fire Watch was established in accordance with the Action Statement of Technical Specification 3.7.6. The file watch remained in place while the barrier was inoperable. The barrier was restored to an operable status on February 7,1996 at i135 hours.

9602220162 960213 3 PDR ADOCK 0500 S

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if there are any questions or comments concerning this letter, please refer them to me at (815) 357-6761, extension 2212.

Respectfully, i

D.J. Ray Station Manager -

LaSalle County Station cc: H. J. Miller, Regional Administrator, Region Ill H. J. Simons, Acting Senior Resident Inspector, LaSalle

IDNS Resident Inspector INPO - Records Center D. L. Farrar, Nuclear Regulatory Services Manager, NORS Central file

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