ML20235L282

Forwards Suppl to Insp Repts 50-338/88-26 & 50-339/88-26 Containing Results of NRC Evaluation of Calibr Data for Three Germanium Detectors in Health Physics Counting Room. Results Indicate Closer Results Between Util & NRC Data

ML20235L282
Person / Time
Site:	North Anna
Issue date:	02/16/1989
From:	Decker T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
Shared Package
ML20235L284	List: IR 05000338/1988026 ML20235L282
References
NUDOCS 8902270454
Download: ML20235L282 (2)

See also: IR 05000338/1988026

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Doci et Nos. 50-338', 50-339-

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Virginia Electric and Power Company

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' ATTN: Mr. W. R. Cartwright, Vice President,

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Nuclear Operations

5000 Dominion Boulevard

G1en Allen,;VA 23060

l Gentlemen:

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SUBJECT:

SUPPLEMENT TO NRC INSPECTION REPORT NGS. 50-338/88-26 AND

50-339/88-26

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Inspection Report Nos. 50-338/88-b and 50-339/88-26,. dated September 21, 1988',

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described an Inspector . Follow-up Item (50-338, 339/88-26-01)- concerning the

analysis and evaluation of 'the most, recent calibration ~ data for the . three

germanium detectors . located in your North . Anna facility's health physics

counting room.

In a letter dated September 23, 1988, you transmitted the .

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requested' calibration data for our evaluation. Results of the, evaluation:show-

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a substantial improvement in the' calibration of your germanium detectors and a

much cluier agreement between your measurements and ours.

During a telephone conversation on February 1, 1989, between the'inspectar and

a ' member of your staff' cognizant of counting room operations, the catses for

the di.fferences between the. previcus and current calibration data were

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discussed. During the telephont coilversation, the benefits of common practices

such as compar1rg old versus new efficiencies after calibration'and the use of

computer geriarated effic1cacy curves vare also discussed.

The licensee

representative

indicated that consideration would be- given fcr the

implementation of these practices.

If you haye any avestiocs concerning this letter, please contact us.

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Sincerely,

Thomas R. De::ker, Acting Chief

Emergency Preparedness and

Radiological Protection Branch

Division of kadiation Safety

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and Safegcards

Enclosure:

Supplement to NRC Inspection Report

Nos. 50-338/88-26 and 50-339/88-26

cc w/ enc 1: (See page 2)

8902270454 890216

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G. E, Kane, Station Manager

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R. F. Saunders, Manager - Nuclear

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Programs and Licensing

Commonwealth of Virginia

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NRC Res-ident inspector

DRS Technical Assistant

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