ML19323C919
| ML19323C919 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 04/29/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Gary R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| References | |
| NUDOCS 8005190412 | |
| Download: ML19323C919 (1) | |
Text
UNITED STATES NSIC
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NUCLEAR REGULATORY COMMISSION CENTRAL FILES
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611 RYAN PLAZA DRIVE, SUITE 1000 REGION IV 80 0519 0 pg
.j ARLINGTON, TEXAS 76012
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April 29, 1980 In Reply Refer To:
RIV Docket Nos.
50-445/IE Circular No. 80-10 50-446/IE Circular No. 80-10 Texas Utill:ies Generating Company ATTN:
Mr. R. J. Gary, Executive Vice President and General Manager 2001 Bryan Tower Dallas, Texas 75201 Gentlemen:
The enclosed IE Circular No. 80-10, is forwarded to you for information.
If there are any questions related to your understanding of the suggested actions, please contact this office.
Sincererr, b
U dl.. '," ~
A tt
%, rl V. Sey rit Director
Enclosures:
1.
IE Circular No. 80-10 2.
List of Recently Issued IE Circulars
SSINS No.: 6830 Accession No.:
UNITED STATES 8002280665 NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT 9
WASHINGTON, D.C.
20555 l
IE Circular No. 80-10 Date: April 29, 1980 Page 1 of 1 FAILURE TO MAINTAIN ENVIRONMENTAL QUALIFICATION OF EQUIPMENT Description of Circumstances:
Carolina Power and Light Company recently reported that the wrong class of insulating material had been used at their H. B. Robinson Nuclear Plant when the motor leads of a containment fan cooler were reconnected.
The motor leads had been disconnected during the refueling outage to supply power to welding equipment.
When the motor leads were reconnected, the wrong class of insulating material degraded the environmental qualification of the containment fan cooler motor.
A similar event, reported by Duquesne Light Company, occurred when a containment fan cooler motor was not installed with the proper cable insulation.
The NRC has previously issued IE Circular 78-08 and IE Bulletins 79-01 and 79-01B concerning environmental qualification of Class IE equipment.
These Bulletins primarily address the environmental qualification of equipment as purchased and installed; however, the above events emphasize the importance of properly installing and maintaining environmentally qualified equipment.
Recommended Action for Licensee Consideration:
All holders of operating licenses or construction permits should recognize the potential for degradation of environmentally qualified equipment due to improper maintenance or improper use.
It is recommended that licensees review current maintenance procedures and administrative policies to ensure the following:
1.
Adequate administrative controls exist to ensure that equipment which is environmentally cualified is identified prior to maintenance.
2.
Maintenance procedures provide necessary instructions and precautions to ensure that the environmental qualification of equipment is not degraded when maintenance is completed.
3.
Maintenance personnel are adequately trained on environmental qualification requirements and the potential for equipment degradation from improper maintenance.
No written response to this Circular is required.
If you require additional information regarding this matter, contact the Director of the appropriate NRC Regional Office.
O IE Circular No. 80-10 April 29, 1980 RECENTLY ISSUED IE CIRCULARS Circular Subject Date Issued To No.
Issued 80-03 Protection from Toxic Gas 3/6/80 All holders of a power Hazards reactor Operating License (OL) 80-04 Securing of Threaded 3/14/80 All holders of a power Locking Devices on Safety-reactor Operating License Related Equipment (OL) or Construction Permit (CP) 80-05 Emergency Diesel-Generator 4/1/80 All holders of a power Lubricating Oil Addition reactor Operating License (OL) and Onsite Supply or Construction Permit (CP) 80-06 Control and Accountability 4/14/80 Medical licensees in Syster.s for Implant Categories G and G1 Therapy Sources 80-07 Problems with HPCI Turbine 4/3/80 All holders of a power Reactor Operating Licenses (OL) or Construction Permit (CP) 80-08 BWR Technical Specifi-4/18/80 All General Electric BWR's cation Inconsistency -
holding a power reactor RPS Response Time Operating License (OL) 80-09 Problems With Plant 4/28/80 All holders of a power Internal Communications reactor Operating License (OL)
Systems or Construction Permit (CP)
Enclosure s