ML17325B186

Ro:On 890217,fire Barriers Declared Inoperable for Longer than 7 Days Allowed by Tech Specs.Gaps Discovered Between Removable Walls & Permanent Structure.Update to Submitted.Procedures to Be Changed

ML17325B186
Person / Time
Site:	Cook
Issue date:	03/27/1989
From:	Will Smith INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 8904050153
Download: ML17325B186 (3)

Text

gc CELE PATED I'TKBt'TlON DEMONiATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSXON NBR:8904050153 DOC.DATE: 89/03/27 NOTARIZED: NO DOCKET FACIL:50-315 Donald C.

Cook Nuclear Power Plant, Unit 1, Indiana 6

05000315 50-316 Donald C.

Cook Nuclear Power Plant, Unit 2, Indiana 6

05000316 AUTH.NAME AUTHOR AFFILIATION SMITH,W.G.

Indiana Michigan Power Co.

(formerly Indiana

& Michigan Ele RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

RO:on 890217,fire barriers declared inoperable for longer than 7 days allowed by Tech Specs.

DISTRIBUTION CODE:

IE22D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: 50.73 Licensee Event Report (LER), Inci ent Rpt, etc.

NOTES:

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1 RECXPIENT ID CODE/NAME PD3-1 PD ACRS MOELLER AEOD/DOA AEOD/ROAB/DSP IRM/DCTS/DAB NRR/DEST/ADS 7E NRR/DEST/ESB 8D NRR/DEST/MEB 9H NRR/DEST/PSB 8D NRR/DE ST/SGB 8 D NRR/DLPQ/QAB 10 NRR/DREP/RPB 10 NUDOCS-ABSTRACT RES/DSIR/EIB RGN3 FILE 01 FORD BLDG HOY I A LPDR NSIC MAYS,G COPIES LTTR ENCL 1

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NOTE 'IO ALL "BIEG" BECIPlEÃ1S.

PLEASE HELP US K) REDUCE i6&TE!

CXÃZACZ 'IHE DOCXMENI'ONSOL DESK, BOOM Pl-37 (EXT. 20079)

TO XXZMINATE YOUR NME PKR DXPHGBUTIQH LISTS FOR DOCUMEWZS YOU DON'T NEEDf TOTAL NUMBER OF COPIES REQUIRED:

LTTR 44 ENCL 43

Indiana Mrchroa~

Power Gornpar', ~

Cock throb;be'"-Ia One Coot; o>aoe B'4v

~ca tE" 9 tQo March 27,1989

INDlANA, NlCH JAR PWM'onald C.

Cook Nuclear Plant'nit Nos.

1 and 2

Docket Nos.

50-315 and 50-316 License Nos.

DPR-58 and DPR-74 U.S. Nuclear Regulatory Commission Document Contxol Desk Washington, D.C.

20555 Attn: A.B. Davis

Dear Mr. Davis:

This letter is to inform you that six fire barriers have been inoperable longer than the seven days allowed by Technical Specification 3.7.10 Action a, and to serve as a follow up report as committed to in a previous letter.

On February 17, 1989, while conducting a routine inspection, a

Quality Control Technician discovered a gap between the top of the removable walls and the permanent structure separating Fire Zones

63A, 63B, and 63C from Fire Zone 5.

Fire Zones

63A, 63B and 63C are the Unit Two Charging Pump Rooms and Fire Zone 5 is the general East/West Corridor of the Auxiliary Building 587'levation.

This inspection also revealed that gaps existed between the removable blocks and numerous conduits that pass through the removable portion of the wall.

After finding these conditions on the Unit Two removable walls, the inspector checked the removable walls separating Fire Zones

62A, 62B, 62C, the Unit One Charging Pump Rooms, and Fire Zone 5.

Gaps were also discovered between the top of the removable walls and the permanent structure.

At that time the removable walls in both units were declared inoperable and a roving fire watch, as required by Technical Specification 3.7.10 Action a, was established for the affected fire zones.

This roving patrol will remain in effect until the problems are resolved.

Due to the unique nature of these barriers an engineering evaluation and determination on how to address the gaps has been requested.

It is expected that the evaluations and repairs will be completed by July 31, 1989.

In a letter dated December 22, 1988 we informed you that Fire Door 346 (separating Fire Zones 45 and 46A), Fire Damper 1-HV-TX-FD-1 (separating Fire Zones 14 -and 79),

and Fire Damper 2-HV-TX-FD-1 (separating Fire Zones 20 and 85) were inoperable.

Following is an update on the information provided in our December 22, 1988 letter.

8'r".04050153 S90327 P6"'DOCK 05000 i5 PDC

Mr. A. B. Davis March 27, 1989

.Page 2 of 2

Fire Door 346 was repaired and returned to service on March 20, 1989.

Fire Dampers 1-HV-TX-FD-1 and 2-HV-TX-FD-1 remain inoperable because they will not close against the ventilation air flow during a fire.

We have determined that an acceptable solution to this is to procedurally require the manual shutdown of the ventilation system in the event of a fire in the area.

To achieve this, the annunciator response procedures for the fire detection in these fire zones will be changed to require the manual shutdown of the ventilation systems upon actuation of the fire detection and verification of a fire in these areas.

These changes will be completed by April 30, 1989.

Respectfully uJ.A'.G., Smith Jr.

c: D.H. Williams, Jr.

A. B. Davis, Region III M.P. Alexich P.A. Barrett R.F. Kroeger NRC Resident Inspector Wayne Scott, NRC R.C. Callen G. Charnoff.,

Esq.

Dottie Sherman, ANI Library D. Hahn INPO PNSRC A.A. Blind S.J.

Brewer/B.P.

Lauzau