ML20055B575
| ML20055B575 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 07/13/1982 |
| From: | Dance H, Julian C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| References | |
| PNO-II-82-078A, PNO-II-82-78A, NUDOCS 8207220511 | |
| Download: ML20055B575 (2) | |
Text
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t July 13, 1982 f
PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PN0-II-82-78A This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verifi-cation or evaluation, and is basically all that is known by the Region II staff on this date.
FACILITY:
Virginia Electric & Power Company Licensee Emergency Classification:
North Anna Unit 2 Notification of Unusual Event Docket No. 50-339 Alert Mineral, Virginia Site Area Emergency General Emergency X Not Applicable
SUBJECT:
OUTAGE EXTENDED This PN0 updates PN0-II-82-78, issued July 8.
The Unit was shut down July 7 to investigate a noise in the "A" steam generator. The licensee reports that inspection revealed that a recently reinstalled tube lane blocking device on the secondary side was loose due to what appears to be improper installation. The licensee concludes that the loose device is the source of the noise.
Similar devices on the "B" and "C" steam generators were inspected and found to be rigid. The attaching devices on all three generators are being strengthened.
During the outage, the licensee is examining thermal sleeves in the reactor coolant system by nondestructive tests. The licensee reports that preliminary analysis indicates that a thermal sleeve in the "B" accumulator line may be missing.
Further examinations are being conducted.
NRR and Region II are reviewing the matter to evaluate the licensee's actions.
Media interest has not occurred. Neither the licensee nor the NRC plans to issue a news release.
The Commonwealth of Virginia has been informed.
Region II (Atlanta) received notification of this occurrence by telephone from the resident inspector at 8:00 a.m. on July 12, 1982.
Contact:
C. A. Julian, RII 242-4182; H. C. Dance, RII 242-5585 DISTRIBUTION:
H. Street MNBB Phillips E/W Willste MAIL:
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Comm. Gilinsky PA OIA RES D0T: Trans Only Comm. Ahearne MPA AE0D Applicable State Comm. Roberts ELD Comm. Asselstine Air Rights INP0 SECY SP NSAC ACRS CA PDR Regions:
Licensee:
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PN NO.
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PRELIMINARY NOTIFICATION (PN) DISTRIBUTION INTERNAL REGION II DISTRIBUTION Regional Administrator Deputy Administrator Assistant to Administrator Public Affairs Officer I
Director, EPOS Director, ETP Director, PRP Emergency Preparedness Section Chief General Files (SSINS NO. 6810)
Administrative Services Coordinators:
EPOS, PRP, ETP State Liaison Officer Agreement States Officer
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