ML17158A000

Responds to Re Response to GL 92-08, Thermo-Lag 330-1 Fire Barriers. Results of Tests & Insp Indicate That Actions Are Necessary to Address Fire Endurance

ML17158A000
Person / Time
Site:	Susquehanna
Issue date:	10/29/1993
From:	Clark R Office of Nuclear Reactor Regulation
To:	Byram R PENNSYLVANIA POWER & LIGHT CO.
References
TAC-M85613, NUDOCS 9311090210
Download: ML17158A000 (5)

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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON. D.C. 20555-0001 October 29, 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:

RESPONSE

TO GENERIC LETTER 92-08, "THERMO-LAG 330-1 FIRE BARRIERS,"

SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1

AND 2 (PLA-3944)

(TAC NOS.

M85613 AND M85614) v By letter dated April 15,

1993, you provided a response to Generic Letter (GL) 92-08 for the Susquehanna Steam Electric Station (SSES),

Units 1 and 2.

Youp,'.

response states that the Thermo-Lag 330-1 fire barriers utilized at SSES were, qualified to existing NRC guida'nce and/or commitments at the time of qualification.

You noted that the actual testing was not in all cases conducted by Pennsylvania Power and Light Company (PPSL).

Although Thermo-Lag barriers were evaluated and may have been considered qualified, the results of recent tests and inspections indicate that further actions are now necessary to address fire endurance and ampacity derating of Thermo-Lag barriers.

Your response states that appropriate actions to resolve these concerns are being developed through an industry program coordinated by NUMARC and you would apply the results of the industry program, when completed, to the Thermo-Lag 330-1 installations at SSES.

Compensatory measures for inoperable barriers are in place and will remain in place until the fire barriers can be declared operable.

Your response to GL 92-08,

however, did not provide a schedule by which corrective actions would be completed.

In your response to GL 92-08, you indicated that the actions necessary to restore (or confirm) the operability of these barriers will be based on the results of the NUMARC program.

The staff expects that licensees referencing the NUMARC program will review the results, and, within 30 days after the completion of the program, inform the NRC of the actions necessary and the schedule for restoring the operability of these fire barriers.

You also stated that you intend to perform SSES specific fire resistance testing in addition to supporting the NUMARC program.

However, you advised us that this program is on hold awaiting development of a test acceptance criteria by the NRC.

In accordance with the reporting requirements of GL 92-08, you are to confirm, in writing, completion of the corrective actions.

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Mr. Robert G.

Byram October 29, 1993 The information requested by this letter is within the scope of the overall burden estimate in Generic Letter 92-08, which was an average of 300 person-hours for each addressee's response.

This request is covered by Office of Management and Budget Clearance Number 3150-0011, which expires June 30, 1994.

S> neer el y, Original signed by Richard J. Clark Richard J. Clark, Senior Project Manager Project Directorate I-2 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation cc:

See next page DISTRIBUTION

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Mr. Robert G.

Byram October 29, 1993 The information requested by this letter is within the scope of the overall burden estimate in Generic Letter 92-08, which was an average of 300 person-hours for each addressee's response.

This request is covei ed by Office of Management and Budget Clearance Number 3150-0011, which expires June 30, 1994.

Sincerely, cc:

See next page R

C ark, Senior Project Manager P oject Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Hr. Robert G.

Byram Pennsylvania Power.

& Light Company Susquehanna Steam Electric Station, Units 1

& 2 Cco 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 Hr. J.

H. Kenny Licensing Group. Supervisor Pennsylvania Power

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

Box 35 Berwick, Pennsylvania 18603-0035 Nr. William P. Dornsife, Director Bureau of Radiation Protection Pennsylvania Department of Environmental Resources P. 0.

Box 8469 Harrisburg, Pennsylvania 17105-8469 Hr. 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 Hr. Harold G. Stanley Vice President-Nuclear Operations Susquehanna Steam Electric Station Pennsylvania Power and Light Company Box 467 Berwick, Pennsylvania 18603 Nr. Herbert D. Woodeshick Special Office of the President Pennsylvania Power and Light Company Rural Route 1,

Box 1797 Berwick, Pennsylvania 18603 George T. Jones Vice President-Nuclear Engineering Pennsylvania Power and Light Company 2 North Ninth Street Allentown, Pennsylvania 18101