ML18030A215

Requests Addl Info Re Design Features Which Contain Leakage from Isolation Valves in ECCS

ML18030A215
Person / Time
Site:	Susquehanna
Issue date:	02/12/1981
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Curtis N PENNSYLVANIA POWER & LIGHT CO.
References
NUDOCS 8102260476
Download: ML18030A215 (4)

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Docket Nos.:

50-387 an~5~5-8&

Pennsylvania Power and Light Company ATTN:

Mr. Norman M. Curtis Vice President - Engineering and Construction 2 North Ninth Street Allentown, Pennsyl vanf a 18101 D"'ocket Fi LBril Rdg DEisenhut BJYoungblood RStark SHanauer MRushbrook RTedesco RVollmer TMurley DRoss bcc:

TERA NRC/POR L/PDR NSIC TIC ACRS (16)

ORoss RHartfield, MPA OELO OIE (3)

SUBJECT:

CONTROL OF LEAKAGE FROM THE ISOLATION VALVES IN THE ECCS In the course of our continuing review of the Susquehanna facility, we have identified a need for additional information regarding the design feactures in.your facility whfch will contain leakage from isolation valves fn the emergency core cooling systems.

The specific information sought fs contained in*the enclosure to this letter.

If you have any questions on this matter, please contact the Prospect

Manager, R.

M. Stark, at (301)492-7238.

Sincerely, cc:

See next page OrigInal signed by Robert L. Tedesoo Robert L. Tedesco, Assistant Director for Licensing Division of Licensing I

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Mr. Norman W. Curtis Vice 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 E Light Company 2 North Ninth Street Allentown, Pennsyl vani a 18101

. Jay Silberg, Esq.

Shaw, Pittman, Potts E

Trowbridge 1800 M Street, i3.

W.

Washington, D.

C.

20036 Mr. William E. Barberich, Nuclear Licensing Group Supervisor Pennsylvania Power 5 Light Company

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2 North Ninth Street Allentown, Pennsyl vania 18101 Edward M. Nagel, Esquire General Counsel and Secretary Pennsylvan'ia Power 8 Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Bryan Snapp, Esq.

Pennsylvania Power 5 Light Company 2 North Ninth Street Allentown, Pennsyl vani a 18101 Robert M. Gallo Resident 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 Project Engineer Bechtel Power Corporation P. 0.

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

Shaw, Pi ttman, Potts Trowbridge 1800 M Street, N.

W.

Washington, D.

C.

20036 Dr. Judith 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, RD//4 Mountain Top, PA 18707 Mr. Thomas J. Halligan Correspondent The Citizens Against Nuclear Danagers P. 0.

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

g v~gg ENCLOSURE e

211.295 Our position on the emergency core cooling systems (ECCS) is that these systems should be desianed to withstand the failure of any single active or passive component without adversely affecting their long-term cooling capabilities.

In this regard, we are concerned that the suppression pool in boiling water. reactors (BWR's) may be drained by leakage from isolation valves which may be rendered inaccessible by localized radioactive contam-ination following a postulated loss-of-coolant accident (LOCA).

Accordingly, indicate the desion

'features in the Susquehanna facility which will contain leakage from the first isolation valve in theZCCS lines taking water-(suction lines) from the suppression pool during the long-term cooling phase following a postulated LOCA.