ML20136D301
| ML20136D301 | |
| Person / Time | |
|---|---|
| Site: | 05000480 |
| Issue date: | 08/26/1975 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20136D283 | List: |
| References | |
| FOIA-85-685 NUDOCS 8511210277 | |
| Download: ML20136D301 (5) | |
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AUGUST 26, 1975
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I SUPPLEMENT NO. 1 TO THE REPORT TO THE ADVISORY COMMITTEE ON REACTOR SAFEGUA.RDS BY 'IllE OFFICE OF NUCLEAR REACTOR REGUIATION U. S. NUCLEAR REGUIATORY COMMISSION IN THE MATTER OF WESTINGHOUSE ETECTRIC CO_RPORATION REFEREEE SAFETY ANALYSIS REPORT RESAR-41 DOCKET NO. ETN 50-480 i
8511210277 851029 PDR FOIA DAYSS-685 PDR
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TABLE OF CONTENTS PAGE 1 -1
1.0 INTRODUCTION
1.8 INTERFACE INFORMATION..........................................
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1.0 INTRODUCTION
The Nuclear Regulatory Comission's Report to the Advisory Comittee on Reactor Safeguards in the matter of the Westinghouse Electric Corporation Reference Safety Analysis Report, RESAR-41, was issued on July 3,1975.
This report was based on our review of RESAP.-41, and its amendments up to and including Amendment 17 in all areas except interface information.
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Section 1.7 of our Report to the Advisory Committee on Reactor Safeguards for RESAR-41, we identified interfaces as one of the outstanding issues that must be resolved prior to issuance of the Preliminary Design Approval.
The purpose of this Supplement is to update our Report to the ACRS by providing (1) our evaluation of the interface information provided in Amendment 17, and (2) the method we plan to use to complete the updating and review of the interface information for RESAR-41.
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o 1-2 1.8 INTERFACE INFORMATION In an effort to develop a consistent and reasonable policy for handling interfaces we have held numemus inter-staff meetings and have met on numerous occassions with standard plant applicants. As a result of these I
meetings and our review of RESAR-41, we detennined that the interface information provided by Westinghouse through Amendment 16 was inadequate.
In order to complete our review and establish acceptable interfaces in RESAR-41 we embarked upon a joint program with Westinghouse.
The near tem effort to complete our review of RESAR-41 consisted of an update of the RESAR-41 interface infomation by Westinghouse provided in Amendment 17 and an audit by the staff of the engineering infomation normally transmitted by Westinghouse to its utility customers and their architect-engineers. The results of our audit and review of the updated j
interface information are being used to identify additional interface infomation we require. Westinghouse has conunitted to address this information and to organize the interfaces in a more consistent and convenient format. Based upon satisfactory completion of our review of this interface infomation and resolution of the outstanding issues identified in Section 1.7 of the Report to the Advisory Connittee on Reactor Safe-guards, we will be able to conclude that a Preliminary Design Approval of the proposed design can be granted.
Based on the short tem effort, we conclude that:
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A substantial part of the safety-related interface information has been identified, reviewed by the staff, and found acceptable.
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The additional interface information we require Westinghouse to provide is of the same type almady provided by Westinghouse and does not involve a change in the definition of interfaces. We do not anticipate any difficulty in obtaining the necessary infomation from Westinghouse or in completing our review of this information.
In certain limited areas the staff may identify specific criteria, guides and standards that must be met by a balance-of-plant design at an interface.
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The procedures for identifying interfaces are acceptable.
This discussion on interface infomation has emphasized the complexities involved in our review of the preliminary design of RESAR-41. We must recognize that it may not be possible to arrive at a 100 percent complete set of interface infomation while processing the first few standard plant applications. Standardization of nuclear power plants is extremely complicated and involves many forces and traditions that need to be redirected and modified.
It is a long term program. The approach to treating the interface infomation described above is intended to be a near tem approach. As we process the custom balance-of-plant designs in utility applications that reference RESAR-41 and other standard nuclear l'
steam supply system designs, and additional standard balance-of-plant design l-applications, we will gain further experience in the identification of interface information. Also, we will have an opportunity during the final design review to upgrade the interface information to reflect this experience.
It is expected that over the next few years we will come considerably closer to realizing our goal of identifying all items of safety-related interface infomation for standard design.
In sumary, the staff concludes that the interface information presently provided in RESAR-41 in conjunction with the program for handling the identified interface deficiencies provides adequate assurance that sufficiently detailed safety-related interface infomation will be identified prior to issuance of the Preliminary Design Approval.
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