ML20054J916
| ML20054J916 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 06/21/1982 |
| From: | Parker W DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, IEB-81-02, IEB-81-2, NUDOCS 8206300201 | |
| Download: ML20054J916 (3) | |
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June 21, 1982 1,u,,,0,,,,,,,, 70, s e c.- e.oove,,o-3,,,,
Mr. Jnmes P. O'Reilly, Regional Administrator U. 5. Nuclear Regulatory Commission Regiur II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Re: Catawba Nuclear Station Units 1 and 2 Docket Nos. 50-413 and -414
Dear Mr. O'Reilly:
Pursuant to 10 CFR 50.55e, please find attached a final response to Significant Deficiency Report SD 413-414/82-09.
Very truly yours,
/2), !
William O. Parker, J RWO/php Attachment cc: Director Mr. Robert M. Guild, Esq.
Office of Inspection & Enforcement Attorney-at-Law U. S. Nuclear Regulatory Commission 314 Pall Mall Washington, D. C. 20555 Columbia, South Carolina 29205 Mr. P. K. Van Doorn Palmetto Alliance NRC Resident Inspector 2135 Devine Street Catawba Nuclear Station Columbia, South Carolina 29205
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s DUKE POWER COMPANY' CATAWBA NUCLEAR STATION SIGNIFICANT DEFICIENCY Report Number: SD 413-414/82-09 Report Date: June 21, 1982 Facility: Catawba Nuclear Station Units 1 and 2 Identification of Deficiency: NRC IE Bulletin 81-02 supplement 1 provided rotification of potential undersizing of electric motor operators (EMOs) for Westinghouse valves.
4 Initial Report:
Initial written. report was made to Mr. J. P. O'Reilly, Region II NRC, via W. O. Parker, Jr.'s letter of April 9, 1982.
Description of Deficiency: Westingliouse letter Catawba-2606 and NRC IE Bulletin 81-02 supplement 1 informed Duke Power of a possible closure problem on Westinghouse Electro-Mechanical Division manufactured gate valves. Westinghouse confirmed by phone that the Limitorque and Rotork motor operators on Catawba valves are undersized. These active valves are supplied per Duke Power Design Specification CNS-1205.00-0008 and Mill Power Order A-98524.
Analysis of Safety Implications: Undersizing'of the Westinghouse valve electric motor operators can result in failure of these active valves to complete their safety functions.
Corrective Action: Westinghous2has completed their technical evaluation of all valve /EMO applications at Catawba to determine if the EMO will meet functional requirements. ENo corrective actions are required on 26, or 46% of the 56 valves.
The corrective actions required on the remaining 30 valves are summarized on.
Manufacturer's drawings will be revised to document any hardware changes by September 30, 1982. Hardware is expected to be availabic by December 31, 1982. Westinghouse has revised their operator sizing procedure to preclude this problem from occurring again.
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DUKE POWER COMPANY CATAWBA NUCLEAR STATION SIGNIFICANT DEFICIENCY ATTACHMENT #1 Part A Valves requiring no corrective action Duke W. Model item #
EMO 0.UANTITY CORRECTIVE ACTION 08000GM84FEC510 90-203 Rotork 16 None 12000GM84FEC400 90-207 Rotork 4
None 08000GM84FEC510 90-214 Rotork 2-None 08000GM86FMC410 9J-205 Rotork 4
None Part B Valves requiring corrective action Dake W. Model item #
EMO QUANTITY CORRECTIVE ACTION 18000GM84FEC310 9D-204 Rotork 4
Requires a torque switch adjustment 080G0GM84FEC500 90-211 Rotork 4
Requires a larger operator 12000GM84FEC300 90-213 Rotork 4
Requires larger motor on current operator 12000GM34FEC310 9D-215 Rotork 4
Requires larger motor on current operator 10000GM88FME01D 9J-209 Limitorque 8
Requires a gearset change on current operator-08000GM88FMC300 9J-211 Rotork 4
Requires a larger operator 12000GM88FME00D 9-213 Limitorque 2
Requires a gearset change on current operator