ML20147F645

Forwards Addl Info Re Statistical Method of Reg Performance Eval of Operating Nuc Pwr Plants w/771026 Memo Licensee Inspec & Enforcement Indicators Update

ML20147F645
Person / Time
Issue date:	12/13/1978
From:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:	AMERICAN ELECTRIC POWER CO., INC.
Shared Package
ML20147F632	List: ML20147F626 ML20147F645
References
NUDOCS 7812220012
Download: ML20147F645 (7)

Text

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IG M84 UNITED STATES f*j fg 9

NUCLEAR REGULATORY COMMISSION

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) E REGloN 811 5-7ee noosEvELT noAo-f GLEN ELLYN, ILUNol$ 60137 DEC 131978

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Dear Mr On November 15, 1978, I sent you information describing three approaches tried by the NRC staff for evaluating the regulatory performance of operating nuclear power plants. One of these approaches was called the " statistical method." It was based on evaluating two measures of performance - the t. umber of non-compliance findings and the number of events considered directly controllable by the licensee. With the information sent you were the results of the statistical method evaluation for forty operating plants or sites based on data for 1976.

Enclosed with this letter is additional information developed in the trial of the statistical method. The enclosed informa-tion -- a copy of an October 26, 1977 memorandum entitled LICENSEE INSPECTION AND ENFORCEMENT INDICATORS UPDATE -- is based on noncomp11ance data (not event data) for the period January 1, 1976 through June 30, 1977 and for the period January 1,1977 through June 30, 1977.

As was discussed in the information previously sent you, the purpose of licensee regulatory performance evaluation, if successful, is to give NRC staff the ability to distinguish between levels of licensee regulatory performance. This could lead to more effective use of the agency's inspection and enforcement resources and to identification of plants that need further examination by the agency.

Sincerely, i

James G. Kepp er Director

Enclosures:

As Stated 78122200tL

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'A THl.S DOCUMENT CONTAINS POOR QUAL.lTY PAGES i

October 26, 1977 HEMORANDUM FOR:

Ernst Volgenau, Director Office of Inspaction & Enforcement. HQ FROM:

E. Morris H ward, Director, Region IV, IE

$UNECT:

LICENSEE IlGPECTIO:I AND ENFORCEMENT.INDICATO'tS UPDATE Enclowd are four figures depicting inspcetion and enforccmnt irdicators, based sclely on noncom.011cn:c, covering the periods January 1,1975 through Jurre 30, 1977 and January 1,1977 through June 30, 1977, for both BWR's and FWR's.

It is intoresting to noto that unusually low or high indicators in the long term (January 1,1976 through June 30, 1977) are not off-set by drastic:lly 1pproved periorv.unce in the short tem.

Indian Point 1:; en cy.collent er.ceplo ci chort term improvemont with the long term record coatfnuing to rcmet the unurually bd receed in Caler.dcr Year 1976.

The long run trend is a valuable teol in detemining the improvcant or degrhdrtion of a cite's rccord when ccmpared with a short tcra enluation.

These tr' ands might also be ustd to detemine the offect of significcat enforce 9r.t action which is uhnt occurred at Indian Point and Zicn in the second-half of 1976,1:ith Indien Point showing rarked improve.nsnt in the first-half of 1977 and Zion chWkg a marked dor.'n trerd in tha su.;e period.

It will ha interosting to dotermino the c?fect of the IE Erd 0rco-tient activitics on Zion's r6 cord in subscquent evaluations.

Thero cro'un11mir.od possibilities which could be investigated with a stron2 possibility that reasone' ole, ststistically suppor'able, cenclusions c

could be reached cor, corning tha licensee's activitics, 'prc,neam effectiva-ness, and regional inspesi, ion performance.'

Thero ney also be a hint ns to how the inspectorr, p rceiro the license:

manegnent attitudos, particularly where there is a low su'ujcctiva ratinit and only a single defick'.cy for cvar four hundred hours of intpoction cffort.

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It to possible to drtw conclusiens over the individual functional areas.

.-eW-e most closrly by inference fron the total score for each functional

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'y-I will ba glad to discuss any or all of these areas at your convenience.

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