ML17139A209

Denies Applicant Request for 3-yr Interval for Low Pressure Steam Bypass Test.Nrc Position of Testing at Each Refueling Supported Due to Newness of Mark II Design

ML17139A209
Person / Time
Site:	Susquehanna
Issue date:	05/01/1981
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Curtis N PENNSYLVANIA POWER & LIGHT CO.
References
NUDOCS 8106050527
Download: ML17139A209 (4)

Text

Docket Nos. 50-387 and 50-388 MAY 1 >S81 Mr. Norman W. Curtis Vice President - Engineering and Construction Pennsylvania Power and Light Company Two North Ninth Street Allentown, Pennsylvania 18101

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NRC PDR TERA Local PDR NSIC LBP2 File TERA DEisenhut TIC

Attorney, OELD ACRS (16)

RPurple RTedesco 1,1 J tl~y/-

RHartfield, MPA -'.

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LRubenstein

SUBJECT:

SUS(UEHANNA APPEAL OF THE STAFF POSITION REGARDING LOW PRESSURE CONTAINMENT LEAKAGE TEST FREQUENCY Pennsylvania Power and Light Company proposed that the test frequency for the low pressure steam bypass test be the same as that required for the Integrated Leak Rate Tests (ILRT), f.e., about every 3 1/3 years.

"The first test would be p'erformed during the initial ILRT and then during every subsequent ILRT.

The NRC position as reflected in SRP 6.2.1.1c is the periodic leak testing be performed at each refueling, an approximate 18-month period.

The applicant requested the 3-year interval based on the added integrity to be gained from specific design features; including, continuous liner plates, seamless downcomer pipe, flued SRV heads at the point of d'diaphragm slab penetrations, and seal welded plates at penetrations of the d'iaphragm slab.

The NRC has carefully considered these design items and the high degree of potential protection to be gained from their presence.

However, the newness of the Mark II design and the importance of protecting against the relatively low capability for accomodating steam bypass inherent in this design requires that an early record of. bypass integrity be proven throug) periodic testing at about the refueling 'internal.

When the Sesquehanna Steam Electric Station and,the other Mark IIs with 'similar or equivalent design features have provided a demonstration, through the periodic refueling cycle inspection, that bypass integrity does not degrade with service, and have provided the staff with this information a less restrictive testing frequency may be adopted.

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Mr. Norman W. Curtis Yice President - Engineering and Construction Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsyl vani a 18101 CC:

Mr. Earle M. Mead Project Engineering Manager Pennsylvania Power

& Light Company 2 North Ninth Street Allentown', Pennsylvania 18101

'ay

Silberg, Esq.

Shaw, Pittman, Potts Trowbridge 1800 M Street, N.

W.

Washington, D.

C.

20036 Mr. William E. Barberich, Nuclear Licensing Group Supelvisor Pennsylvania Power

& Light Company 2 North Ninth Street Allentown, Pennsylvania 18101

-Edward M. Nagel, Esquire General Counsel and Secretary Pennsylvania Power

& Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Bryan Snapp, Esq.

Pennsylvania Power

& Light Company 2 North Ninth Street Allentown, Pennsyl vani a 18101 Robert M. Gallo

'esident Inspector P. 0. Box 52 Shickshinny, Pennsylvania 18655 John,L. 'Anderson Oak Ridge National Laboratory Union Carbide Corporation Bldg. 3500, P. 0.

Box X Oak Ridge, Tennessee 37830 Gerald R. Schultz, Esq.

Susquehanna Environmental Advocates P. 0.

Box 1560 Wikes-Barre, Pennsylvania 18703 Mr. E.B. Poser

'roject Engineer Bechtel Power Corporation P. 0.

Box 3965 San Francisco, California 94119 Matias F. Travieso-Diaz, Esq.

Shaw, Pittman, Potts Trowbridge 1800 M Street, N.

W.

Washington, D.

C.

20036

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3udi th H. Johnsrud Co-Director Environmental Coalition on, Nuclear Power 433 Orlando Avenue

=- State College, Pa 16801 Mr. Thomas M. Gerusky, Director Bureau of Radiation Protection Department of Environmental Resources Comnonwealth of Pennsylvania P. 0.

Box 2063 Harrisburg, Pa 17120 Ms. Colleen Marsh Box 538A, RD84 Mountain Top, PA 18707 Mr Thomas.J Halligan Corresoondent The Citi.zens -Aqainst Nuclear

.Danagers P.

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Box 5

Scranton, Pennsylvania 18501 Mr. J.W. Millard Project MAnager Mail Code 394 General Electric Company 175 Curtner Avenue San Jose, California 95125 Robert W. Adler Dept. of Environmental Resources 505 Executive House P. 0.

Box 2357 Harrisburg, Pennsylvania 15120

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