ML19257C416
| ML19257C416 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 01/17/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Papay L SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 8001290085 | |
| Download: ML19257C416 (1) | |
Text
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UNITED STATES
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WALNUT CREE K, CALIFORNIA 94596 January 17, 1980 Docket flos. 50-206, 50-361 50-362 Southern California Edison Company P. O. Box 300 2244 Walnut Grove Avenue Rosemead, California 91770 Attention:
Dr. L. T. Papay, Vice President Advanced Engineering Gentlemen:
The enclosed IE Circular f4o. 80-01 is forwarded to you for information and, if applicable, necessary action in accordance with the attached General Electric Company Service Advice 721-162.2. No written response to this Circular is required.
If you have any questions related to the subject, please con-tact this office.
Sincerely, n{l W mclN~
R. H. Engelken Director
Enclosure:
1.
IE Circular No. 80-01 2.
GE Service Advice /21-162.2 cc w/ enclosures:
J. M. Curran, SCE R. Dietch, SCE ih
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1"11TED STATES SSIMS flo.: 6830 flUCLEAR JIGULATORY C031ISSIO'l Accessions No.:
CFFICE OF INSPECTI0fl AND Ef1FORCEMENT 7912190644 WASHINGTON, D.C.
20555 January 17, 1980 IE Circular No. 80-01 SERVICE ADVICE FOR GEilEPAL ELECTRIC INDUCTION DISC RELAYS Alabama Power Company reported to the NRC on October 16, 1979 a notential problem with certain General Electric Conpany induction disc type protective relays.
A higher than normal oick-up value was caused by netroleum jelly lubricant which under high tenperature conditions can migrate to the backstop. At roon temper-ature the lubricant can becone adhesive and cause pickup values to be higher than setpoint values.
General Electric (GE) laboratory confirned sone higher than normal pickup values and recorrended that users deternine whether relays neeting the following criteria are in use at their facilities:
(i)
Relay type:
IAC, IAV, ICR, or IJCV, AtlD (2) The relay date code (which is printed on a 3/4" x 3/8" sticker affixed to the relay cradle) has a number less than 50, followed by any of the following two letter codes:
(a) Any first letter follomd by H, J, K, L, or M; or (b) The letter conbinations AN, B'l, CN. DN, EN, DG, EG, FG, GG, HG, JG, KG, LG or MG.
For example, 31GK would be considered, while 5') GK or 23Hil would not be considered.
Experience has shown that the cleaning prce edare reconrended in GE Service Advice 721-162.1 may not in all cases renove all of the petroleum jelly which is lodged in place.
Based on the above, licensees are advised to anply G.E. Service Advice 721-162.2 (Enclosure A) to all relays that fall within the above two criteria.
flo ritten response to this Circular is required.
If you desire additional information regarding this matter contact the Director of the appropriate NRC Regional Office.
Attachment:
Enclosure A DUPLICATE DOCUMENT 18%.200 Entire document previously entered into system under:
fo ANO r
No. of pages: