ML20038D066
| ML20038D066 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 12/01/1981 |
| From: | Barrett L, Fasano A, Haverkamp D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I), Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| PNO-TMI-81-022A, PNO-TMI-81-22A, NUDOCS 8112160034 | |
| Download: ML20038D066 (1) | |
Text
50250-U11111 Decent er 1. l El PRELIMINARY NOTIFICATI0'4 0F EVENT OR UNUSUAL OCCURRENCE--PNO-TMI-31-22A This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance.
The information is as initially received without v'eri fi-cation or evaluation and is basically all that is known by NRC staff on thi.sidate h gt Facility: Metropolitan Edison Company Licensee Emergency Classiff tationPc
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Three Mile Island, Unit I X
Not Applicable I'f % O.,4S Docket No. 50-289 i
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Subject:
STEAM GENERATOR TUBE LEAKS
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'g On November 30, 1981, the licensee determined that the "A" Once Throughi$ team Generator (OTSG) had 86 leaking tubes.
On November 21, 1981, thelicense'e'had,pl determined 27 leaking tubes on the "B" 0TSG, and subsequently found 11 additi nal tube leaks.
In order to further evaluate the leakage problem, eddy current testing is scheduled to commence on December 6,1981 and is planned to last several weeks.
Both.'0TSG's are being placed in full wet lay up until testing starts to minimize further tube degradation.
The primary coolant system is being maintained at atmospheric pressure.
The licensee is continuir g to investigate the mode of failure of the tubes and is planning to remove sections of failed tubes for metalurgical testing.
The impact of the tube failures on restart of TMI-l is not currently known by the licensee.
Media interest may occur because the licensee plans to issue a press release.
The Commonwealth of Pennsylvania was infemed.
This preliminary not.ification is issued for information only and _the. NRC plans to continue' monitoring the licensee's corrective actions.
The Senior Resident Inspector (TMI-1) received notification of this occurrence by direct verbal report from~ the TMI-1 Plant Engineering Director at 7:30 PM,
' November 30, 1981, and this infomation was current as of 8:00 AM today.
A 10 CFR 50.72 rpport w s evaluated gs no bein necessary by the licensee.
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Contact:
D. Haverkan 590-1156 A. Fasano 590-1123 Distribution :
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