ML19260D086
| ML19260D086 | |
| Person / Time | |
|---|---|
| Site: | Atlantic Nuclear Power Plant  |
| Issue date: | 01/17/1980 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Collier A OFFSHORE POWER SYSTEMS (SUBS. OF WESTINGHOUSE ELECTRI |
| References | |
| NUDOCS 8002070382 | |
| Download: ML19260D086 (1) | |
Text
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- p nR*e09'o,i UNITED STATES 8
NUCLEAR REGULATORY COMMISSION
'.E REGION il f
101 MARIETTA ST., N.W., SUITE 3100 o
b ATLANTA, GEORGIA 30303 o
....+
JAN 171980 In Reply Refer To:
RII:JPO d 6-437 ;
Offshore Power Systems Attn:
A. R. Collier, President P. O. Box 8000 Jacksonville, Florid:
32211 Gentlemen:
The enclosed IE Circular No. 80-01 is forwarded to you for information and if applicable necessary action in accordance to 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 contact this office.
Sincerely, C.77 Y-Jame$'P O'
i Director
^
Enclosures:
1.
IE Circular No. 80 2.
List of Recently 1ssued IE Circulars 1937 239 8002070 3 F E
UNITED STATES SSINS No.:
6830 NUCLEAR REGULATORY COMMISSION Accessions No.:
01TICE OF INSPECTION AND ENFORCEMENT 7912190644 WASHINGTON, D.C.
20555 January 17, 1980 IE Circular No. 80-01 SERVICE ADVICE FOR GENERAL ELECTRIC 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 backstop.
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 ac 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 5.0, followed by any of the following two letter codes:
(a) Any first letter followed by H, J, K, L, cr 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 GE 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.
937 240
Attachment:
GE Service Advice 721-162.2 DUPLICATE DOCUMENT Entire document previously entered into system under:
ANO No. of pages:
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