ML19257C403
| ML19257C403 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 01/17/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Cavanaugh W ALABAMA POWER CO. |
| References | |
| NUDOCS 8001290063 | |
| Download: ML19257C403 (1) | |
Text
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STATE January 17, 1980 Docket Nos.
50-313 50-368 Arkansas Power and Light Company ATTN:
Mr. IJ1111am Cavanauri IIT Vice President of Generation and Construction P. O. Box 551 Little Rock, Arkansas 72203 Gentlenen:
The enclosed II Circular No. 80-01 is forwarded to you for infornation and, if applicable, necessary action in accordance to the attached General Electric Conpany Service Advice 721-162.2.
No written respcuse to this Circular is required.
If you have any questiens related to the subject, please centact this office.
Sincerely, J
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.c s' Karl V. Seyfrit'~/
Director
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Enclosures:
1.
II Circular No. 30-01 2.
List of II Circulars Recently Issued cc: James P. O'Hanlon, Plant Manager Arkansas Nuclear One P. O. Box 608 Russellville, Arkansas 72801 1859-038 63 0..e gp012.
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UNITED STATES SSINS No.:
6830 NUCLEAR REGULATORY COMMISSION Accessions No.:
OFFICE OF INSPECTION AND ENFORCEMENT 7912190644 WASHINGTON, D.C.
20555 IE Circular No. 80-01 January 17, 1980 Page 1 of 1 SERVICE ADVICE FOR GENERAL ELEC'?RIC INDUCTION DISC RELAYS Alabama Power Company reported to the NRC on October 16, 1979 a potential problem with certain General Electric Company induction disc type protective relays. A higher than normal pick-up value was caused by petroleum jelly lubricant which under high temperature conditions can migrate to the backstep.
At room temper-ature the lubricant can become adhesive and cause pickup values to be higher than setpoint values.
General Electric (GE) laboratory confirmed some higher than normal pickup values and recommended that users determine whether relays meeting the following criteria are in use at their facilities:
(1) Relay type:
IAC, IAV, ICR, or IJCV, AND (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 twc letter codes:
(a) Any first letter followed by H, J, K, L, or M; or (b) The letter combinations AN, BN, CN, DN, EN, DG, EG, FG, GG, HG, JG, KG, LG or MG.
For example, 31GK would be considered, while 50 GK or 23HN would not be considered.
Experience has shown that the cleaning procedure recommended in CE Service Advice 721-162.1 may not in all cases remove all of the petroleum jelly which is lodged in place.
Based on the above, licensees are advised to apply G.E. Service Advice 721-162.2 (Enclosure A) to all relays that fall within the above two criteria.
No written response to this Circular is required.
If you desire additional information regarding this matter contact the Director of the appropriate NRC Regional Office.
Attachment:
DUPLICATE DOCUMENT Enclosure A Entire document previously entered into system under:
ANO No. of pages:
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