ML17157C526

Forwards Request for Addl Info Re Loss of Sfpc Events for Plants

ML17157C526
Person / Time
Site:	Susquehanna
Issue date:	10/20/1993
From:	James Shea Office of Nuclear Reactor Regulation
To:	Byram R PENNSYLVANIA POWER & LIGHT CO.
References
TAC-M85337, NUDOCS 9310280211
Download: ML17157C526 (6)

Text

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October 20, 1993 Docket Nos.

50-387 and 50-388 Mr. Robert G.

Byram Senior Vice President-Nuclear Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) CONCERNING LOSS OF SPENT FUEL POOL COOLING EVENTS, SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1

AND 2 (TAC NO. H85337)

The NRC staff is continuing to review the material provided by Messrs.

Prevatte and Lochbaum in their 10 CFR Part 21 report filed on November 27,

1992, and the material provided by Pennsylvania Power and Light Company by letters dated Hay 24, July 6, and August 16,

1993, and during the meetings with you on March 18, and July 8,

1993, concerning loss of spent fuel pool cooling scenarios.

As a result of the continuing review, the staff has developed a request for certain additional information.

The RAI is enclosed.

Your reply is requested by November 5, 1993.

This request affects 9 or fewer respondents and, therefore, is not subject to Office of Management and Budget review under P.L.96-511.

If you have any questions, please contact me at (301) 504-1428 or Dick Clark at (301) 504-1402.

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Enclosure:

Request For Additional Information cc w/enclosure:

See next page Sincerely,

/S/

Joseph W. Shea, Project Manager Project Directorate I-2 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation DISTRIBUTION L

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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 20, 1993 Docket Nos. 50-387 and 50-388 Mr.'obert G.

Byram Senior Vice President-Nuclear Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101

SUBJECT:

RE(VEST FOR ADDITIONAL INFORMATION (RAI) CONCERNING LOSS OF SPENT FUEL POOL COOLING EVENTS, SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1

AND 2 (TAC NO. H85337)

The NRC staff is continuing to review the material provided by Messrs.

Prevatte and Lochbaum in their 10 CFR Part 21 report filed on November 27,

1992, and the material provided by Pennsylvania Power and Light Company by letters dated May 24, July 6, and August 16,

1993, and during the meetings with you on March 18, and July 8,

1993, concerning loss of spent fuel pool cooling scenarios.

As a result of the continuing review, the staff has developed a request for certain additional information.

The RAI is enclosed.

Your reply is requested by November 5, 1993.

This request affects 9 or fewer respondents and, therefore, is not subject to Office of Management and Budget review under P.L.96-511.

If you have any questions, please contact me at (301) 504-1428 or Dick Clark at (301) 504-1402.

Sine e y,

Enclosure:

Request For Additional Information cc w/enclosure:

See next page Jo eph W. Shea, Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Pennsylvania Power

& Light Company Susquehanna Steam Electric Station, Units 1

& 2 CC:

Jay Silberg, Esq.

Shaw, Pittman, Potts

& Trowbridge 2300 N Street N.W.

Washington, D.C.

20037 Bryan A. Snapp, Esq.

Assistant Corporate Counsel Pennsylvania Power

& Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Mr. J.

M. Kenny Licensing Group Supervisor Pennsylvania Power

& Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Mr. Scott Barber Senior Resident Inspector U. S. Nuclear Regulatory Commission P.O.

Box 35 Berwick, Pennsylvania 18603-0035 Mr. Thomas M. Gerusky, Director Bureau of Radiation Protection Resources Commonwealth of Pennsylvania P. 0.

Box 2063 Harrisburg, Pennsylvania 17120 Mr. Jesse C. Tilton, III Allegheny Elec. Cooperative, Inc.

212 Locust Street P.O.

Box 1266 Harrisburg, Pennsylvania 17108-1266 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Mr. Harold G. Stanley Superintendent of Plant Susquehanna Steam Electric Station Pennsylvania Power and Light Company Box 467 Berwick, Pennsylvania 18603 Mr. Herbert D. Woodeshick Special Office of the President Pennsylvania Power and Light Company Rural Route 1, Box 1797 Berwick, Pennsylvania 18603 George T. Jones Manager-Engineering Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Robert G. Byram Senior Vice President-Nuclear Pennsylvania Power

& Light Company 2 North Ninth Street Allentown, Pennsylvania 18101 Mr. David A. Lochbaum 80 Tuttle Road

Watchung, New Jersey 07060 Mr. Donald C. Prevatte 7924 Woodsbluff Run Fogelsville, Pennsylvania 18051

ENCLOSURE U

OR ADD ONA NFO M

IO REGARD G

0 0

SP N

UE POO COO NG EV S

l.

Attachment 15 to the Part 21 report contained an internal PPSL review entitled "Review of Fuel Pool Coolihg During Postulated Off-Normal and Accidents Events."

Section 2.2 of the report stated "... it is indeterminate whether the FPC piping and equipment will be damaged by the hydrodynamic loads."

Please provide a summary of the design criteria for the piping and hangers for the spent fuel pool cooling system and service water system.

In addition, please summarize which loads (static, deadweight, etc.)

were considered in the design analysis of the spent fuel pool cooling system and service water system piping and hangers.

Finally, summarize any additional analysis of the spent fuel pool cooling and service water piping and hangers that considered the effect of LOCA-induced hydrodynamic loads.

Please make available for staff review at the site or engineering offices.

the detailed calculations that support the above summaries.

2.

The Nay 24, 1993 PP&L submittal states that "Pre-operational test data from both units indicates that at least 5,700 gpm can be achieved through RHR in this [Fuel Pool Cooling Assist mode] configuration."

Attachment 16 to the 10 CFR Part 21 report contains an internal PPKL memo, PLI-72367, dated September 9,

1992, that states (on page

9) "A point to consider is that at SSES the RHR system has never been fully tested in the fuel pool cooling assist mode.

During the test program flow was established at about 2000 gpm.

Higher flows were not attained..."

Please provide descriptions of the preoperational tests including system lineups and initial conditions.

Please provide copies of the relevant data sheets with the results of the preoperational test data of the RHR system in the fuel pool cooling assist mode.

In addition to the above requested information, please make the detailed test procedure including system lineups, initial conditions and test data sheets available at the site for staff review.

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