ML19323C940
| ML19323C940 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 04/29/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Papay L SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 8005190440 | |
| Download: ML19323C940 (1) | |
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UNITED STATES 1
NUCLEAR REGULATORY COMMISSION
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REGION V o,
g 1990 N. CALIFORNIA BOULEVARD
,d' SUITE 202, WALNUT CREEK PLAZA WALNUT CREEK, CALIFORNIA 945%
April 29,1980 Docket tios. 50-205, 50-361 & 50-362 i
Southern California Edison Company P. O. Box 800 2244 Walnut Grove Avenue Rosemead, California 91770 Attention:
Dr. L. T. Papay, Vice President Advanced Engineering Gentlemen:
The enclosed Circular flo. 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.
Sincer ely,
,1 l GT$ 96k l
R. H. Engelken Director Enclosures :
1.
IE Circular tio. 80-10 2.
List of Recently Issued IE C~rculars cc w/ enclosures:
J. M. Curran, SCE 4
R. Dietch, SCE 1
I l
SSIllS No.: 6830 Accession No.:
UNITED STATES 8002280665 NUCLEAR REGULATORY COMMISSION s
0FFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 April 29, 1980 IE Circular No. 80-10 FAILURE T0 ftAINTAIN ENVIRONMENTAL QUALIFICATION 0F EQUIPMENT Description of Circumstances:
Carolina Power and Light 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 notor 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 in,portance 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 envi onmentally qualified is identified prior to maintenance.
2.
Maintenance procedures provide necessary instructions and precautions to ensure that the environmental qudification of equiprrent 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 'egarding this matter, contact the Director of the appropriate NRC Regional Office.
I 1
IE Circular No. 80-10 Enclosure April 29,1980 RECENTLY ISSUED IE CIRCULARS Circular Subject Date of Issued to No.
Issue t
80-09 Problems With Plant Internal 4/28/80 All holders of a power Communications Systems reactor OL or CP l
80-08 BWR Technical Specification 4/18/80 All Laneral Electric Inconsistency - RPS Response BWR's holding a power Time reactor OL 80-07 Problems with HPCI Turbine 4/3/80 All holders of a power Oil System reactor OL or CP a
80-06 Control and Accountability 4/14/80 Medical licensees in l
Systems for Implant Therapy Categories G and G1 Sources i
80-05 Emergency Diesel-Generator 4/1/80 All holders of a power Lubricating 011 Addition and reactor OL or CP Onsite Supply 80-04 Securing of Threaded Locking 3/14/80 All holders of a power Devices on Safety-Related reactor OL or CP Equipment j
80-03 Protection from Toxic Gas 3/6/80 All holders of a Hazards power reactor OL 80-02 Nuclear Power Plant Staff 2/1/80 All holders of Reactor Work Hours Ols, including research and test reactors, and cps 80-01 Service Advice for GE 1/17/80 All licensees of Induction Disc Relays nuclear power reactor operating facilities and holders of nuclear power reactor-cps i
79-25 Shock Arrestor Strut 12/20/79 All licensees and Assembly Interference holders of power reactor cps
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