IR 05000317/1985031

Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Repts 50-317/85-31 & 50-318/85-26 & of Plans Re Resolution of Open Items Concerning Control Room Habitability

ML20199F357
Person / Time
Site:	Calvert Cliffs
Issue date:	03/20/1986
From:	Martin T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:	Tiernan J BALTIMORE GAS & ELECTRIC CO.
References
NUDOCS 8603280171
Download: ML20199F357 (2)

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MAR 2 01986 Docket Nos. 50-317 License Nos. DPR-53 50-318 DPR-69 Baltimore Gas and Electric Company ATTN: Mr. J. A. Tiernan Vice President Nuclear Energy P. O. Box 1475 Baltimore, Maryland 21203 Gentlemen:

Subject: Combined inspection 50-317/85-31 and 50-318/85-26

! This refers to your letter dated January 13, 1986, in response to our letter dated December 13, 198 Thank you for informing us of your plans regarding the resolution of open items related to control room habitabilit Your cooperation with us is appreciate

Sincerely, OS31sn1 SI-- :c 9f:

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o s art n, Directo Division of Radiation Sa y and Safeguards CC:

M. Bowman, General Supervisor, Technical Services Engineering  :

Thomas Magette, Administrator, Nuclear Evaluations l Public Document Room (PDR) l Local Public Document Room (LPOR) l Nuclear Safety Information Center (NSIC) i NRC Resident Inspector  !

State of Maryland (2) l l

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R603280171 860320 I PDR ADOCK 05000317 O PDR OFFICIAL RECORD COPY RL CC 85-31/26 - 0001. /12/86 s l l

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Region I Docket Room (with concurrences).

! DRP Section Chief M. McBride, RI, Pilgrim T. Kenny, SRI, Salem D..Jaffe, LPM, NRR

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BALTIMORE g GAS AND ELECTRIC CHARLES CENTER P. O. BOX 1475 * BALTIMORE, MARYLAND 21203 JOSEPH A.TIERNAN Vect PatstDENT NucLEAn ENERGY January 13, 1986 U. S. Nuclear Regulatory Commission ~ Docket No Region I 50-318 631 Park Avenue License No DPR-53 King of Prussia, PA 19406 DPR-69 ATTENTION: Mr. Thomas T. Martin, Director Division of Radiation Safety & Safeguards Gentlemen:

This refers to Inspection Report 50-317/85-31, 50-318/85-26; which identified apparent deficiencies in the area of Control Room Habitability. We have conducted a thorough review of the findings and have worked with Mr. P. Clemons of your office previously in this are Enclosure (1) to this letter is a written statement in reply to those findings noted in your lette Based on the information provided in Enclosure (1), we request you reevaluate the appropriate findings. Should you have further questions regarding this reply, we will be pleased to discuss them with yo Very truly yours, 3AT/SRC/gla Enclosure cc: D. A. Brune, Esquire G. F. Trowbridge, Esquire D. H. Jaffe, NRC T. Foley, NRC '

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t ENCLOSURE (1)

REPLY TO APPENDII A OF IEtC INSPECTION REPORT 50-317/8 5L31; S0-318/85-26 FINDING 317/8 5L31-01 We plan to measure the isolation damper and access door leakage rates, in addition to estimating the leakage rate in the duct

. work outside the Control Room envelope . A total inleakage rate l will then be estimated and, if necessary, used in a new dose calculation for Control Room Operator We will provide the i results of the inleakage determination and dose calculation by l February 1,198 We will determine any appropriate corrective action, if

necessary, when deficiencies are note FINDING 317/8 5L27-01; 318/8 542 5L01 l The following maintenance deficiencies have been corrected

oCracked panels in the air handling unit have been repaired (welded),

oAir leaks at the cooling coil penetrations have been sealed, and oLatches on duct windows have been replace In addition to the missing screws and bolts, and holes at stress l points on the fabric expansion joints, the following deficiencies were noted during the walkdown of affected ductwork:

oCrack in a panel for #12' Air Handling Unit, and oMissing plugs in test penetration holes in the

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ductwor These deficiencies will be corrected by April 1, '198 ; FINDING 317/8 5631-02 Licensee Event Report 8 5-014 (Unit 1) documented specific issues  ;

in this findin The -louvered dampers were repaired and shut o '

a Control Room high radiation signa The following corrective actions were taken:

oBroken blade brackets were replaced, oDamper linkages were adjusted, and oA sampling of similar dampers were inspecte We intend to evaluate the isolation capability of the louvered dampers by measuring the leakage through these dampers in the recirculation mode with the butterfly dampers open. This evaluation should be completed by April 1, 198 <