ML19256C863
| ML19256C863 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 08/13/1979 |
| From: | Mckee P, Nolan F NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-79-329, NUDOCS 7910150376 | |
| Download: ML19256C863 (2) | |
Text
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PRELIMINARY NOTIFICATION August 13, 1979 C
PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-79-329 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest sicnificance.
The information presented is as initially received without verification or evaluation and is basically all that is known by IE staff on this date.
Facility:
Pilgrim Nuclear Power Station Boston Edison Company (Massachusetts)
(DN 50-293)
Subject:
IMMEDIATE ACTION LETTER ISSUED TO ADDRESS CONCERNS AS5OCIATED WITH A VIOLATION OF PRIMARY CONTAINMENT INGEGRITY During a routine onsite inspection, a Region I inspector noted that on June 12, 1979, while at 100% power and performing repairs on the "A" Core Spray System test line to the Torus, the Primary Conta#'iment Integrity was violated.
This occurred when the first valve in the line outside of containment was dis-assembled and repaired.
There is no containment isolation valve inside contain-ment for this penetration.
The valve, a 6 inch check valve, was disassembled for approximately 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />.
After identification of the incident by the Region I int pector, the licensee made a prompt report (LER 79-029/OlX-0) on August 9,1979.
On August 10, 1979, Region I issued an Immediate Action Letter to Boston Edison Company specifying the following actions:
1.
Review of the sequence of events leading to the violation of the primary containment integrity, determine the safety significance of each of these events and define specific measures to prevent recur-rence; 2.
Review the adequacy of procedural and management controls as they apply to safety-related maintenance; and, 3.
Review the adequacy of plant staffing and staff training to prevent such an occurrence.
Tnis licensee agreed to complete the reviews and inform Region I in writing of the substance of the reviews and of any changes or improvements in his prcgrams as a result of the reviews by August 17, 1979.
Media interest is expected because of continued interest in operating nuclear power plants.
The Commonwealth of Massachusetts has been informed.
A press release is not planned by the licensee or NRC.
NRC, Region I, (Philadelphia) received notification of this occurrence by a phone call from the Project Inspector onsite on August 9, 1979.
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August 13, 1979 PNO-79-329 CONTINUED
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Contact:
PMcKee, IE x28019 FNolan, IE x28019 Distribution:
Transmitted H St Chairman Hendrie Commissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Commissioner Ahearne C. C. Kammerer, CA Commissioner Gilinsky ACRS (For Distribution)
Transmitted:
MNBB P. Bldg feast 6 V. -Stello, IE
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L. V. Gossick, EDO H. R. Denton, NRR Region ;[__
H. L. Ornstein, EDO R. C. DeYoung, NRR J. J. Fouchard, PA R. J. Mattson, NRR N. M. Haller, MPA D. Vassallo, NRR (MAIL)
R. G. Ryan, OSP D. Eisenhut, NRR J. J. Cummings, OIA H. K. Shapar, ELD SS Bldg R. Minogue, 50 W. J. Dircks, NMSS S. Levine, RES PRELIMINARYNOTIFICAI10N
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