ML19210E909
| ML19210E909 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 11/08/1979 |
| From: | Stello V NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | Jeffery Grant TOLEDO EDISON CO. |
| References | |
| NUDOCS 7912130187 | |
| Download: ML19210E909 (2) | |
Text
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'o UNITED STATES
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Toledo Edison Company 4
Edison Plaza, 300 Madison Avenue g
Toledo, OH 43652
Dear Mr. Grant:
Teknekron Research, Inc. was requested by.the IE staff to perform a study of operating nuclear power plants with B&W nuclear steam supply systems using their technicue for analyzing causally linked events.
Teknekron performed a two phase study using this technique which has been previously reported in NUREG/CR 0110 (Phase I) and N'JREG/CR 0979 (Phase II).
The results of Phase I were used as one of the three trial methods for Licensee Regulatory Performance Evaluation (LRPE) attempted by the IE staff in 1977 and 1978.
The.ost recent Teknekron study, the results of which are summarized in the enclosed report, is a part of a continuing effort by the IE staff to develop an effective program for LRPE.
Several approaches to LRPE were attempted previously and the results were made available to the public in November 1978.
At tnat time it was reported that each of the three approaches attempted (statistical treatment of noncompliance history, ratings by regional inspectors, and analysis of causally linked events) had strengths and weaknesses, but no single methoc was favored by the IE technical staff.
Collowing the Three Mile Island accident, Teknekron was requestec to perform a study of operating reactors with B&W nuclear steam supply systems to determine if any further safety insights could be gained by the analysis of cperating experience at these facilities as reported through Licensee Event Reports (LER).
The importance of evaluating operating experience is emphasized as a lesson learned from the Three Mile Island accident.
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2-A craft report of the results of this most recent effort by Teknekron is enclosed for your information.
Although we have not yet completed our staff review of the report, it is forwarded in its present draf t form because of potential public interest and because your facility is discussed.
Sincerely, Victor Stello, Jr.
Director Office of Inspection and Enforcement
Enclosure:
As stated Distribution:
Cnairman Hendrie Co.missioner Gilinsky 1550 00e3 Cc.%missioner Kennedy Cc.missioner Bradford.
Cormissioner Ahearne L. V. Gossick, EDO R. Smith, EDO T.
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