05000317/LER-1980-020-03, /03L-0:on 800314,while Operating at 98% Power,Fire Marshall Discovered Fire Barrier Penetration Between Cable Spreading Room & Turbine Bldg Not Sealed W/Flamastic Fire Retardant Matl.Caused by Inaccessible Location

/03L-0:on 800314,while Operating at 98% Power,Fire Marshall Discovered Fire Barrier Penetration Between Cable Spreading Room & Turbine Bldg Not Sealed W/Flamastic Fire Retardant Matl.Caused by Inaccessible Location

ML19323A095
Person / Time
Site:	Calvert Cliffs
Issue date:	04/14/1980
From:	Buffington D, Wenger L BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19323A094	List: 05000317/LER-1980-020, Forwards LER 80-020/03L-0 05000317/LER-1980-020-03, /03L-0:on 800314,while Operating at 98% Power,Fire Marshall Discovered Fire Barrier Penetration Between Cable Spreading Room & Turbine Bldg Not Sealed W/Flamastic Fire Retardant Matl.Caused by Inaccessible Location
References
LER-80-020-03L, LER-80-20-3L, NUDOCS 8004170221
Download: ML19323A095 (2)

LER-1980-020, /03L-0:on 800314,while Operating at 98% Power,Fire Marshall Discovered Fire Barrier Penetration Between Cable Spreading Room & Turbine Bldg Not Sealed W/Flamastic Fire Retardant Matl.Caused by Inaccessible Location

Event date:
Report date:
3171980020R03 - NRC Website

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8 60 61 DOCK ET NUMB ER 68 69 EVENT DATs 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CCNSEQUENCES O10 ITTTl 1 n 3/14/80 while operating at 98% powTr, the Fire Marshall discovered i

0 ja fire barrier penetiration between U-l cable spreading room and the Turbine l

iO i3i l Building was not sealed with Flamastic fire retardant material per T.S. 3.7.12.

iO i Ai IO Ioi IThe Shift Supervisor was notified and a fire watch was immediately assi:ned to l

lO is i Ithe area. Approved temporary patches were installed. A maintenance request l

lwas submitted and pemanent repairs were started on 3/18/80 at 0745. This is l0l7) i O la i Inot a repetitive occurrence.

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 I1 i O I IThe nenetration referred to in this renort is an area inaccessible to routine I

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linspection and would not have'been noted durina routine operator tours of the I

i i u_L_j Icable spreadine room. Subsecuent investication of each cenetration indicated I

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50-317 EVENT DATE 03/14/80 REPORT DATE '04/14/80 ATTACHMENT i

CAUSE DESCRIPTIOil AND CORRECTIVE ACTI0flS:

(C0llTItajED)

Although it was apparent that fire retardant material had been applied (after modifications took place) the quality of application was inadequate. A training program including maintenance and quality control personnel has recently been completed and all personnel were made aware of the importance of maintaining proper fire barriers throughout the plant. The training program is being incorporated 'nto a general orientation program to ensure all site (new and present) personnel are adequately trained. in the fire protection program.

Additionally, an inspection has been conducted to verify the status of all fire barrier penetrations in all fire walls protecting safety-related areas.

As a result of this inspection, 21 additional inadequately sealed penetrations ir. the cable spreading room, control room, control room ventilation room, and auxiliary feedwater pump room were identified and repaired.

It is believed that these penetrations were not properly sealed during construction.

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