ML19257C472
| ML19257C472 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 01/17/1980 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Finfrock I JERSEY CENTRAL POWER & LIGHT CO. |
| References | |
| NUDOCS 8001290180 | |
| Download: ML19257C472 (1) | |
Text
WM
'o UNITED STATES 8
'I,,g NUCLEAR REGULATORY COMMISSION g
,m REGION I o,
[
631 PARK AVENUE o#
KING OF PRUSSIA, PENNSYLVANIA 19406 Docket No. 50-219 jag 17 ;ggg Jersey Central Power and Light Company ATTN:
Mr. Ivan R. Finfrock, Jr.
Vice President Madison Avenue at Punch Bowl Road Morristown, New Jersey 07960 Gentlemen:
The enclosed IE Circular No. 80-01 is forwarded to you for informatic: 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, f
c yce H. Grier
- Director
Enclosures:
1.
IE Circular No. 80-01 2.
List of Recently Issued IE Circulars CONTACT:
S. D. Ebneter (215-337-5296) cc w/encls:
J. T. Carroll, Station Superintendent 1839 318-8001290 I3 Ci
ENCLOSURE 1 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 Date:
January 17, 1980 Page 1 of 1 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 pr 'ective relays.
A higher than normal pick-up value was caused by petroleum jelly lubricant which under high temperature conditions can migrate to t*3 backstop.
At room temperature tne 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 two 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 GE Service Advice 721-162.1 Lay 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 (Attachment A) to all relays that fal! within the above two criteria.
No written response to this Circular is required.
If you desire additional information regarding this matter contact the Di Regional Office.
DUPLICATE DOCUMENT Attachment A Entire document previously entered into system under:
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