ML19260D203
| ML19260D203 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 01/17/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Eric Turner HOUSTON LIGHTING & POWER CO. |
| References | |
| NUDOCS 8002080105 | |
| Download: ML19260D203 (1) | |
Text
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January 17, 1980 In Reply Refer To:
RIV Docket Nos. 50-498/IE Circular No. 80-01 50-499/IE Circular No. 80-01 Houston Lighting & Power Company ATTN:
Mr. E. A. Turner, Vice President Power Plant Construction and Technical Services Post Office Box 1700 Houston, Texas 77001 Centlemen:
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, 7
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Kar
. Seyfrit /
Director
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Enclosures:
1.
IE Circular No. 80-01 2.
List of IE Circulars Recently Issued 1942 227 800208o
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 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 petroleuru 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 arsd 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 re ommended 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 inf ormation regarding this matter contact the Director of the appropriate NRC Regional Office.
^t' Enc DUPLICATE DOCUMENT 1942 228 Entire document previously entered into system under:
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