ML20198C349

Forwards Request for Addl Info Re Generic Ltr 89-10,Suppl 3, Consideration of Results of NRC-Sponsored Tests of Motor- Operated Valves

ML20198C349
Person / Time
Site:	Peach Bottom
Issue date:	06/27/1991
From:	Milano P Office of Nuclear Reactor Regulation
To:	Beck G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
References
GL-89-10, TAC-77790, TAC-77791, NUDOCS 9107020281
Download: ML20198C349 (5)

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UNITED STATES 5-Wt NUCLEAR REGULATORY COMMISSION

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WASHINoTON, D C. 20555 g.-f June 27, 1991 f

Docket tios. 50-277 and 50-278 Mr. George J. Beck tianager-Licensing, MC 5-2A-5 Philadelphia diectric Company Nuclear Group Headquarters Correspondence Control Desk P. O. Box No. 195 Wayne, Pennsylvar.ia 19087-0195

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION RE: GENERIC LETTER (GL) 89-10, SUPPLEMENT 3:

"CONSIDERATICN OF THE RESULTS OF NRC-SPONSORED TESTS OF fl0 TOR-OPERATED VALVES" (TAC fl0s. 77790 AND 77791)

By letter dated March 13, 1991, you submitted a response to the 120-day, 10 CFR 50.54(f), reporting requirements of GL 89-10, Supplement 3, for the Peach Bottom Atomic Power Station, Units 2 and 3.

After reviewing your response, the staff has concluded that the additional information identified in the enclosure is necessary to make a safety determination regarding the subject motor-operated valves.

Response to the enclosed Request for Additional Information (RA1) is requested within 30 days from receipt of this letter.

This request is covered by Office of Management and Budget Clearance Number 3150-0011, which expires December 31, '.991.

The estimated average burden hours are 80 person-hours per licensee response, including searching data sources, gathering and analyzing the data, performing data evaluations, and preparing the required letters.

(These estimated average burcen hours pertain only to the identified response-related matters and do not include the time for actual implementation of the requested action.) Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to the Information and Records Management Branch, Division of Information Management, U.S. Nuclear Regulatory Commission, Washington, D.C., 20555, and to the Paperwork Reduction Project (3150-0011), Office of Management and Budget, Washington, D.C., 20503.

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Mr. George J. Beck June 27, 1991 Should you have any questions regarding this RAI, please contact me at (301) 492-1428.

Sincerely, b D.

E Patrick D. Milano, Project Manager Project Directorate I-2 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulacion

Enclosure:

Request for Mdit1onal Information cc w/ enclosure:

See next page

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.Mr. George J. Beck Peach Bottom Atomic Power Station, Philadelphia Electric Company Units 2 and 3 cc:

J. W. Durham, Sr., Esquire Single Point of Contact Sr. V.P. & General Counsel P. O. Box 11880 Philadelphia Electric Company Harrisburg, Pennsylvania 17108-1880 2301 Market Street, S26-1 Philadelphia, Pennsylvania 19101 Philadelphia Electric Company Mr. Thomas M. Gerusky, Director ATTN: Mr. D. B. Miller, Vice President Bureau of Radiation Protection Peach Bottom Atomic Power Station Pennsylvania Department of Route 1, Box 208 Environmental Resources Delta, Pennsylvania 17314 P. O. Box 2063 Harrisburg, Pennsylvania 17120 Philadelphia Electric Company ATTH: Regulatory Engineer, Al-23 Peach Bottom Atomic Power Station Board of Supervisors Route 1, Box 208 Peach Bottom Township Delta, Pennsylvania 17314 R. D. #1 Delta, Pennsylvania 17314 Resident Inspector U.S. Nuclear Regulatory Commission Public Service Commission of Maryland Peach Bottom Atomic Power Station Engineering Division P.O. Box 399 ATTH:

Chief Engineer Delta, Pennsylvania 17314 231 E. Baltimore Street Baltimore, MD 21202-3486 Regional Administrator, Region I U.S. Nuclear Regulatory Commissior Mr. Richard McLean 475 Allendale Road

.'wer Plant and Environmental King of Prussia, Pennsylvania 19406 Review Division Department of Natural Resources Mr. Roland Fletcher B-3, Tawes State Office Building Departnent of Environment Annapolis, Maryland 21401 201 West Preston Street Baltimore, Maryland 21201

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ENCLOSURE-REQUEST FOR ADDITIONAL INFORMATION RE: SUPPLEMENT 3 TO GENERIC LETTER 89-10,

" CONSIDERATION OF THE RESULTS OF NRC-SPONSORED TESTS OF MOTOR-0PERATED VALVES" PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 1.

Identify any modifications (e.g., torque switch setting adjustments, gearing changes, or motor / actuator replacement) for each MOV within the scope of Supplement 3 to GL 89-10 since June 1990 or planned for the future.

2.

What are the actuator and motor sizes, and differential pressure for the RCIC MOVs?

3.

Provide information necessary to confirm motor adequacy for each M0V within Supplement 3.

4 What are the motor sizes for the HPCI and RWCU MOVs?

5.

What is the justification for exceeding the published hrust ratings for the Limitorque SMB-0 and 00 actuators?

6.

What is the schedule for adjusting the torque switches for the RCIC and RWCU MOVs in Unit 3? In Supplement 3 to GL 89-10, the NRC staff indicated that its safety assessment provided support for continued operation for 18 months or one refueling outage.

If the schedule for adjusting the torque switches exceeds those dates, provide specific justification.

7.

How have you addressed the rate of loading phenomenon in M0V sizing and torque switch settings?

Mr. George J. Beck

-2 June 27, 1991 Should you have any questions regarding this RAI, please contact me at (301) 492-1428.

Sincerely,

/S/

Patrick D. Milano, Project fianager Project Directorate 1-2 Division of Reactor Projects. 1/11 Office of Nuclear Reactor Regulation

Enclosure:

Request for Additional Information cc w/ enclosure:

See next page

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