ML110820125

Forwards Third Interim Deficiency Rept Re Makeup & Purification & Decay Heat Removal Pump Motors W/Damaged Thermocouple Wiring.Next Rept to Be Submitted by 801008

ML110820125
Person / Time
Site:	Bellefonte
Issue date:	05/08/1980
From:	Mills L Tennessee Valley Authority
To:	O'Reilly J NRC/OI/RGN-II/FO
Shared Package
ML110820126	List: ML110820125 ML19323C361
References
NUDOCS 8005150392
Download: ML110820125 (3)

Text

a REGULATO INFORMATION DISTRIBUTION 0TEM (RIDS)

ACCESSION NBR:8005150392 DOC,DATE: 80/05/08 NOTARIZED: NO DOCKET #

FACI ABellefonte Nuclear Plant, Unit 1, Tennessee Valley Au 05000438 5-43 Bellefonte Nuclear Plant, Unit 2, Tennessee Valley Au 05000439 NU TAUTHOR AFFILIATION 1LLSrL,M, Tennessee Valley Authority RECIPNAME RECIPIENT AFFILIATION O'REILLYJ.P. Region 2, Atlanta, Office of the Director

SUBJECT:

Forwards third interim deficiency rpet re makeup &

purification & decay heat removal Pump motors w/demaged thermocouple wiringNext rept to be submitted by 801008, DISTRIBUTION CODE: 8019S COPIES RECEIVED:LTR .1 ENCL . SIZEs TITLE: Construction Deficiency Report (10CFR50.55E)

NOTES:-

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL ACTION: 14 PM 1 1 15 BC 1-&We #3 1 1 20 LA w'9 #3 1 1 21 AD L/ 1 1 INTERNAL: 0 REG FLE 1 1 02 NRC POR 0 5-IE 2 2 07 EDO & STAFF 08 MPA 1 1 09 DEPY DIR DPM 10 QAB 1 1 11 STANDROS DEV 13FIELD COOR/IE 1 1 16 AD FOR ENGR 17 AD PLANT SYS 1 1I 17 AD REAC SFTY 22 DIR DPM 1 1 23 OELD AD/RCI/IE 1 1 AD/SITE TECH AEOD 1 1 DIRECTOR DSE GEOSCIENCES BR 1I 1 HANAUERS.,

I&C SYS BR 1 1 MATL ENG BR MECH ENG BR 1 1 POWER SYS BR STRUCT ENG BR 1I 1 EXTERNAL: 03 LPOR 1 1 04 NSIC 1 1 24 ACRS 16 16 MAY 1 8 1980

{

TOTAL NUMBER OF COPIES REQUIRED: LTTR 48 ENCL

0 8005 51503o TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 400 Chestnut Street Tower II May 8, 1980 Mr. James P. 'Reilly, Director Office of Insp tion and Enforcement U.S. Nuclear Reg tory Commission Region II - Suite 00 101 Marietta Street Atlanta, Georgia 303

Dear Mr. O'Reilly:

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 - THIRD INTERIM REPORT On November 21, 1979, M. J. Gouge, NRC-OLE 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 deter mined to be reportable in accordance with 10 CFR 50.55(e). This was followed by our interim reports dated December 21, 1979, and March 27, 1980. Enclosed is our third interim report. We expect to submit our next report by October 8, 1980.

If you have any questions concerning this matter, please get in touch with D. L. Lambert at FTS 854-2581.

Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Regulation and Safety Enclosure cc: Mr. Victor Stello, Jr., Director (Enclosure)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 An Equal Opportunity Employer

ENCLOSURE 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)

THIRD INTERIM REPORT Description of Deficiency During an equipment inspection, the thermocouple wiring for the makeup 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.

Interim Progress One meeting has been held with B&W at the site to investigate the damage. A second meeting was held in Knoxville to discuss scheduling of repairs and testing of the pump motors. The following determinations were made as a result of the discussions between B&W, Westinghouse, and TVA.

1. The successful completion of the Westinghouse procedure entitled "Procedure for Inspecting and Testing Motors with Damaged Thermo couple Leads" will ensure that the motors are serviceable and warrantable.

2. The damage to the thermocouple leads is mechanical and was not caused by overheating.

3. Splicing is an acceptable means for repairing the damaged leads.

4. All parties agreed that the mechanical damage to the thermocouple leads most likely occurred at the Bellefonte construction site.

B&W has been requested to expedite the submittal of documentation for repair and testing of the pumps.