ML20010D256

Final Deficiency Rept Re Makeup & Purification & Decay Heat Removal Pump Motors W/Damaged Thermocouple Wiring,Initially Reported 791121.Thermocouple Leads Mechanically Damaged. Motors Now Serviceable

ML20010D256
Person / Time
Site:	Bellefonte
Issue date:	08/19/1981
From:	Mills L MISSISSIPPI POWER & LIGHT CO., TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
10CFR-050.55E, 10CFR-50.55E, NCR-1087, NCR-1101, NRC-1087, NUDOCS 8108240320
Download: ML20010D256 (2)

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TENNESSEE VALLEY nAUTHORITY CH ATTANOOGA. TENNESSEE 374ot 400 Chestnut Street Tower II

' l / " q '20 A8: lI August 19, 1981 e to Mr. James P. O'Reilly, Director [ q Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission [.D_i liUG 2,] 7ggI A 8fC{/'L Region II - Suite 3100 H u 8 q) si .s,% % ss

,Q ron f y g/

101 Marietta Street Atlanta, Georgia 30303

Dear Mr. O'Reilly:

Mf(

BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - MAKEUP AND PURIFICATION AND DECAY HEAT REMOVAL PUMP MOTORS WITH DAMAGED THERMOCOUPLE WIRING - NCR'S 1087 AND 1101 - FINAL REPORT On November 21, 1979 M. J. Gouge, NRC-OIE Region II, was informed that Nonconformance (NCR) 1087 was determined to be reportable in accordance with 10 CFR 50.55(e). Since that time, related NCR 1101 has been determined to be reportable in accordance with 10 CFR 50 55(e). This was followed by our interim reports dated December 21, 1979, March 27, May 8, and October 7, 1980, and February 17, 1981. Enclosed is ouP final

report. This NCR was closed in inspection report 438, 439/81-15 dated June 4, 1981.

If you have any questions concerning this matter, please get in touch with D. L. Lambert at FTS 857-2581.

Very truly yours, 11 TENNESSEE VALLEY AUTHORITY I ut )

l g L. M. Mil s, Manager [

, Nuclear Re lation and afety

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Enclosure cc: Mr. Victor Stello, Jr., Director (Enclosure)

Office of Inspection and Enforcement 4 U.S. Nuclear Regulatory Coanission Washington, DC 20555 4

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' 8108240320 810819 PDR ADOCK 05000438 8 PDR An Equal Opportunity Employer

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i FNCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 MAKEUP AND PURIFICATION AND DECAY HEAT REMOVAL PUMP MOTORS WITH DAMAGED THERMOCOUPLE WIRING NCR'S 1087 AND 1101 10 CFR 50.55(e)

FINAL REPORT l

4 1 j Description of Deficiency

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During an equipment inspection, the thermocouple wiring for the makeup i

and-purification and the decay heat removal pump motors had indications of overheating. While the damaged thermocouple wiring in itself does not represent a significant safety problem, the damage could be an indication of more extensive damage to the motors.

Safety Implications The testing conducted by B&W/ Westinghouse representatives onsite provided 4 no evidence of overheating of the motors. The damage to the thermocouples appears to be mechanical. Since the motors have been

tested and shown to be acceptable and the thermocouples perform no safety j- function, had the subject condition remained uncorrected, it could not

have adversely affected the safety of operations of the plant.

1 Corrective Action During the week of April 13, 1981 a representative of Westinghouse 1 visited the Bellefonte site. The purpose of his visit was to aid in the

, conduct of the testing of the subject thermocouple wiring. This i

representative verified that the testing was conducted in accordance with B&W Field Change Package (FCP) 110 (Repair and Testing of Decay Heat and Makeup Pump Motor Thermocouples).

The test procedure included an individual inspection of thermocouples.

The inspection provided no evidence of overheating. However, the thermocouple leads were mechanically dat:ged. The B&W representative witnessed the repairs dictated by FCP 110. After the final repair, the 4

motors were tested.

The motors are now serviceable and warranted tv B&W.

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