ML19323C361
| ML19323C361 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 05/08/1980 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML110820126 | List: |
| References | |
| NCR-1087, NCR-1101, NUDOCS 8005150396 | |
| Download: ML19323C361 (1) | |
Text
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 MAKEUP AND PURIFICATION AND DECAY HEAT REMOVAL PUMP MOTORS WlTH DAMAGED THERMOCOUPLE WIRING NCR'S 1087 AND 1101 10 CFR 50.55(S)
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 c 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.
All parties agreed that the mechanical dauage to the thermocouple 4.
leads most likely occurred at the Bellefonte construction site.
B&W ha been requested to expedite the submittal of documentation for repair and testing of the pumps.
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