ML19316A872

Discusses Apparent Risk Facility Presents Based on Reactor Safety Study (WASH-1400).Requests That Facility Perform Study to Evaluate Relative Risk.Evaluation Should Be Completed within 120 Days of Receipt of Ltr

ML19316A872
Person / Time
Site:	Limerick
Issue date:	05/06/1980
From:	Eisenhut D Office of Nuclear Reactor Regulation
To:	Bauer E PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
References
RTR-WASH-1400 NUDOCS 8005280011
Download: ML19316A872 (3)

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MAY 6 1980 Docket Nos.: 50,'{62/M3 Mr. Edward G. Bauer, Jr.

Vice President and General Counsel Philadelphia Electric Company 2301 Market Street Philadelphia, Pennsylvania 19101

SUBJECT:

RISK EVALUATION - LIMERICK GENERATING STATION, UNITS 1 and 2 Due to a combination of factors which include high population densities and proposed power levels, the risk from certain nuclear facilities is believed to represent a disproportionately high segment of the total societal risk from reactor accidents.

The Limerick facility is one of the facilities which appears to present such a risk.

A base assumption of this judgment is that if the Reactor Safety Study (WASH-1400) reference plant were located at the Limerick site, the societal risk from that plant would be higher than the societal risk from the WASH-1400 plant located at the WASH-1400 reference site.

Because it is recognized that the Limerick facility design and site specifics are not identical to those of the WASH-1400 reference plant, and in order to further evaluate this risk considering Limerick site specific and plant spbcific information, the staff requests that you conduct a preliminary risk assessment of the Limerick' facility utilizing the WASH-1400 methodology, but taking into account significant differences between the WASH-1400 reference plant and the Limerick facility.

Dominant high risk accident sequences to be evaluated should be selected based on Limerick plant-specific design considerations. Meteorological, population, and hydrological data specific to the Limerick site should-be used in evaluating the consequences of selected accidents, l

Various criticisms of the use of WASH-1400 should be recognized including those i

criticisms identified in the Risk Assessment Review Group Report to the U. S. Nuclear Regulatory Commission (NUREG/CR-0400), but since the purpose of the proposed Limerick study is to evaluate a relative risk for the Limerick facility as compared to the risk identified with the WASH-1400 reference facility, it is believed that the use of WASH-1400 in this manner is proper.

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l AM) b 1930 Mr. Edward G. Bauer, Jr.

2-We request that you complete this evaluation and submit the results to us within 120 days of the date of receipt of this letter.

As a first step in this activity, we suggest a meeting with you and your staff on Wednesday, May 21,1980 at 10:00 A.M. at our Bethesda office.

The purpose of the meeting is to give you the opportunity to discuss your plans for conducting the study and to discuss any questions you may have on this matter.

incerely, 6.

isen ac or Division o Licensing Office of Nuclear Reactor Regulation cc: See Next Page D

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