ML19260D196
| ML19260D196 | |
| Person / Time | |
|---|---|
| Site: | Perkins, Cherokee  |
| Issue date: | 01/17/1980 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Dail L DUKE POWER CO. |
| References | |
| NUDOCS 8002080086 | |
| Download: ML19260D196 (1) | |
Text
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UNITED STATES e
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NUCLEAR REGULATORY COMMISSION
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E REGION 11
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101 MARIETTA ST N.W.. SUITE 3100 o
ATLANTA, G EORGIA 30303 I.O..
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JAN 171380 In Reply Refer To:
RII:JM 50-486, 10-489_
50-490,Q0-4 91J LW92;QO,493'.)
Duke Power Company Attn:
L. C. Dail, Vice President Design Engineering Post Office Box 33189 Charlotte, North Carolina 28242 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 Se nice 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,
< ;~y QJ.
Jam s'P 0'
13 Director
Enclosures:
1.
IE Circular No. 80-01 2.
List of Recently Issued IE Circulars 1942 197 h
8002 80 g g y 0
< rau Duke Power Company cc w/ enc 1:
J. T. Moore, Project Manager Post Office Box 422 Gaffney, South Carolina 29340 e
1942 \\98
UNITED STATES SSINS No.:
6830
~~
NUCLEAR REGULATORY COMMISSION Accessions No.:
OFFICE OF INSPECTION AND EhTORCEMENT 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 secpoint values.
General Electric (GE) laboratory confirmed some higher than normal pickup values an.1 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 af fixed 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 II, J, K, L, or M; or (b'
The 1e ter combinations AN, BN, CN, DN, EN, DG, EG, FG, GG, ifG, 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 petroleim 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:
GE Service Advice 721-162.2 DUPLICATE DOCUMENT Entire document previously ANO -
Y No. of Pages: