ML20236M407
| ML20236M407 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 11/05/1987 |
| From: | Nobles L TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| 87-15, NUDOCS 8711130119 | |
| Download: ML20236M407 (2) | |
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~ TENNESSEE: VALLEY AUTHORITY' i
.Sequoyah. Nuclear Plant l
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' Post Office Box 2000 i
Soddy-Daisy, Tennessee 37379
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November 5;.1987 j
]l U.'S.
Nuclear' Regulatory Commission
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Document Control Desk j
Washington, DC 20555 Gentlemen:
TENNESSEE VALLEY AUTHORITY,-'SEQUOYAH NUCLEAR PLANT UNIT DOCKET NO.
50-327 -~ FACILITY OPERATING LICENSE DPR-77-- SPECIAL REPORT 87 1 The enclosed special report provides. details.concerning a fire door' breached l
greater'than seven days..This event is reported in accordance with action statement (a) of Limiting Conditions for Operation 3.7.12.
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.Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Nobles Plant Manager P
Enclosure ec (Enclosure):
J. Nelson Grace, Regional Administrator U. S. Nuclear Regulatory Commission i
Suite 2900 101 Marietta Street, NW-Atlanta, Georgia 30323 Records-Center Institute of Nuclear Power Operations Suite 1500 i
- 1100 Circle 75 Parkway Atlanta, Georgia' 30339 NRC Inspector, Sequoyah' Nuclear Plant 8711130119 871105 PDR ADOCK 05000327 6
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An Equal Opportunity Employer I
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' SEQUOYAH NUCLEAR PLANT.
. UNIT 1-y SPECIAL REPORT 87-15
- 6 DESCRIPTION OF. EVENT j
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On,0ctober 6,-1987, with unit l'in mode.5 (0 percent power, 3 psig,.and 128'
- degraes F),Jthe fire breach permit issued on September 29, 1987,-for fire door A-25-(to unit l' turbine-driven auxiliary feedwater' pump room, Auxiliary-H Building: elevation 669) exceeded ~the seven-dayslimit. allowed by Technical f
Specification Limiting Condition:for Operation'(LCO) 3.7.12.
lJ The' fire breach.was issued.to facilitate the safe removal of asbestos t
insulation-from'the auxiliary feedwater piping in the turbine' driven
-auxiliary feedwater pump room to a'. low Inspection of.the piping in' accordance'with Special Maintenance Instruction (SMI)-0-317-55, "Walkdown of d
> Alternate-Analysis Piping and Supports." Door A-25 was breached open to.
construct'a temporary; air' lock thereby' ensuring a negative pressure inside
- the room and, preventing a releasecof asbestosLfibers into the auxiliary building ventilation system.
3 CAUSE OF EVENT The regul' red : asbestos removal work was not completed within1the seven-day
. period due to'the complexity of the work involved.
A decision was made to maintain the breach for the duration of the asbestos removal activity to minimize the airborne asbestos hazard to employee health. As a result,.the fire' breach exceeded the seven-day limit of action statement A of LCO 3.7.12.
ANALYSIS OF EVENT This event is being reported in accordance with the requirements of action statement A of LCO 3.7.12.
A roving 1rire watch was established to inspect the turbine-driven auxiliary
'feedwater pump room on an hourly basis as required by the action statement of LCO 3.7.12.
The existing fire detection and suppression systems for the
, pump room were operable and would have actuated in the event of a fire.
.Therefore, there was no danger to redundant safety-related equipment.
' CORRECTIVE ACTION i
LA roving fire watch.at a regular interval of.one hour was established for l
door A-25-immediately and maintained until the asbestos pipe insulation removal _ work.was completed, and the fire door was restored to functional status on October 8, 1987. No further actions are required.
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