ML19208C420
| ML19208C420 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 09/20/1979 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 7909260368 | |
| Download: ML19208C420 (1) | |
Text
TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374ot 400 Chestnut Street Tower II September 20, 1979 Mr. James P. O'Railly, Director Office of' Inspection and Enforcement U.S. Nuclea' Regulatory Commission Region II -
ite 3100 101 Marietta S eet Atlanta, Georgi
- 3030,
Dear Mr. O'Reilly:
SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 - DELAY OF REACTOR TRIP BECAUSE OF ARCING ACROSS UNDERFREQUENCY RELAY CONTACTS - NCR EEB 79 SECUhD INTERIM REPORT The subject deficiency was initially reported to NRC-01E Inspector F. S. Cantrell on August 2,1979, in accordance with 10 CFR 50.55(e).
An interim report was submitted on August 27, 1979. We expect to submit our next report before fuel loading in unit 1.
TVA is investigating the possibility of installing diodes across each of the four auxiliary relay coil terminals.
It has not been determined if this corrective action is suitable because of trip signal time requirements.
If you have any questions concerning this ratter, please get in touch with D. L. Lambert at PTS 854-2581.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Milla, Manager Nuclear Regulation and Safety Mr.VictorStello,Jr., Director [
cc:
Office of Inspection and Enforcenent U.S. Nuclear Regulatory Commission Washington, DC 20555 e.
1012 350 S
9oN An Equal Opportunity Employer 7909260 4
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