ML20128D121

Forwards SE Accepting GE Proposal for Implementing ISLOCA Issue Resolution for Advanced BWR

ML20128D121
Person / Time
Site:	05200001
Issue date:	12/02/1992
From:	Poslusny C Office of Nuclear Reactor Regulation
To:	Marriott P GENERAL ELECTRIC CO.
Shared Package
ML20128D125	List: ML20128D121 ML20128D140
References
NUDOCS 9212070153
Download: ML20128D121 (3)

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December 2, 1992 Docket No.52-001 Mr. Patrick W. Marriott, Manager Licensing & Consulting Services GE Nuclear Energy 175 Curtner Avenue San Jose, California 95125

SUBJECT:

PRELIMINARY EVALUATION OF THE RESOLUTION OF THE INTERSYSTEM LOSS-0F-COOLANT ACCIDENT (ISLOCA) ISSUE FOR THE ADVANCED B0liING WATER REACTOR (ABWR) - DESIGN PRESSURE FOR LOW-PRESSURE SUTEMS In SECY-90-016. " Evolutionary Light Water Reactor (LWR) Certification Issues and Their Relationship to Current Regulatory Requirements," the Nuclear Regulatory Commission (NRC) staff resolved the ISLOCA issue for advanced light water reactor plants by requiring that low-pressure piping systems that interface with the reactor coolant pressure boundary be designed to withstand full reactor coolant system (RCS) pressure to the extent practicable.

The General Electric Company (GE) provided a proposed implementation of the issue resolution for the ABWR in a letter from Jack Fox (GE) to Chet Poslusny (NRC) dated October 8, 1992.

The staff in the Civil Engineering and Geosciences Branch of the Division of Engineering has completed its evaluation of the GE proposal for implementing the ISLOCA issue resolution for the ABWR.

Specifically, the staff has evaluated the minimum pressure for which low-pressure systems should be designed to ensure reasonable protection against burst failure should the low-pressure system be subjected to full RCS pressure.

The staff finds that the GE proposal, as modified in the safety evaluation, provides an acceptable basis for concluding that the low-pressure piping systems are capable of withstanding the conx que..ces of an ISLOCA event.

However,-GE needs to revise its standard safety analysis report and provide Tier J commitments and inspections, tests, analyses, and acceptance criteria to reach final closure of the issue, n.o I

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i Mr. Patrick W. Marriott December 2,1992 Enclosed is the evaluation.

Please note that the reactor systems evaluation is not completed and requires additional GE information as discussed in a recent telecon with GE staff.

Sincerely, (Original signed by)

ChesterPosiusny,Projectlianager Standardization Project Directorate Associate Directorate for Advanced Reactors and License Renewal Office of Huclear Reactor Regulation

Enclosure:

Staff Preliminary i

Evaluation cc w/ enclosure:

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GE Nuclear Energy Dock 9t No.52-001 Mr. Robert Mitchell Mr. Joseph Quirk General Electric Company GE Nuclear Energy 175 Curtner Avenue Mail Code 782 San Jose, California 95114 General Electric Company 175 Curtner Avenue Mr. L. Gifford, Program Manager San Jose, California 95114 Regulatory Programs GE fluclear Energy 12300 Twir. brook Parkway tuite 315 hvckville, Maryland 20852 Director. Criteria & Standards Division Office of Radiation Programs U. S. Environmental Protection Agency 401 M Street, S.W.

Washington, D.C.

20460 Mr. Daniel F. Giessing U. S. Department of Energy NE-42 Washington, D.C.

20585 Mr. Steve Goldberg Budget Examiner 725 17th Street, N.W.

Room 8002 Washington, D.C.

20503 Mr. Frank A. Ross U.S. Department of Energy, NE-42 Office of LWR Safety and Technology 19901 Germantown Road Germantown, Maryland 20874 Mr. Raymond Ng 1776 Eye Street, N.W.

Suite 300 Washington, D.C.

20006 Marcus A. Rowden Esq.

Fried, frank, Harris, Shriver & Jacobson 1001 Pennsylvania Avenue, N.W.

Suite 800 Washington, D.C.

20004 Jay M. Gutierrez, Esq.

Newman & Holtzinger, P.C.

1615 L Street, N.W.

Suite 1000 Washington, D.C.

20036 4