ML19257C414
| ML19257C414 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 01/17/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 8001290082 | |
| Download: ML19257C414 (1) | |
Text
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UNITED STATES y y '.,.,
g NUCLEAR REGULATORY COMMISSION a J-cc REGION V o, '
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1990 N. CALIFORNIA BOULEVARD e
SUITE 202, WALNUT CRE E K PLAZA e,,,o WALNUT CREE K. CAllFORNIA 94596 January 17, 1980 Docket No. 50-344 Portland General Electric Company 121 S. W. Salmon Street Portland, Oregon ^7204 Attention: Mr. Charles Goodwin, Jr.
Assistant Vice PresMent Gentlemen:
The enclosed IE Circular No. 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.
tio written response to this Circular is required.
If you have any questions related to the subject, please con-tact this office.
Sincerely, hET$mac(k R. H. Engelken Director
Enclosure:
1.
IE Circular flo. 80-01
?,
GE Service Advice 721-162.2 cc w/ enclosures:
C. P. Yundt, PGE F. C. Gaidos, PGE J. W. Lentsch, PGE i B3'A 197 sonzooggy
UNITED STATES SSINS No.: 6830 NUCLEAR REGULATORY COM'11SSION Accessions No.:
OFFICE OF INSPECTION AND Ef4FORCEMENT 7912190644 WASHINGTON, D.C.
20555 January 17, 1980 IE Circular No. 80-01 SERVICE ADVICE FOR GENERAL ELECTRIC INDUCTION DISC. RELAYS Alabama Power Ccnpany reported to the NRC on October 16, 1979 a notential problem with certain General Electric Company induction disc type protective relays.
A higher than normal oick-up value was caused by oetroleum jelly lubricant which under high tenperature conditions can nigrate to the backstop. At roon terper-ature the lubricant can becone adhesive and cause pickup values to be higher than setpoint values.
General Electric (GE) laboratory confirned some higher than normal pickup values and recorrended that users deternine 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 conbinations 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 nay not in all cases renove all of the petroleum jelly which is lodged in place.
Based on the above, licensees are advised to aoply 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:
Enclosure A DUPLICATE DOCUMENT Entire document previously entered into system un er:
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9 hNO M
No. of pages: