ML19256C740
| ML19256C740 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 01/08/1979 |
| From: | Klinger G, Nolan F NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-79-003, PNO-79-3, NUDOCS 7910120386 | |
| Download: ML19256C740 (1) | |
Text
2 '!:
PRELIMINARY NOTIFICATION January 8,1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-79-03
_This areliminary r.otification constitutes EARLY notice of an event of
_PCSSIBLE safety or public interest significance.
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:
Northeast Nuclear Energy Company Millstone Point Unit 1 (DN 50-245)~~
Waterford, Connecticut
Subject:
REACTOR WATER CLEANUP SYSTEM EIGHT INCH RETURN LINE THRU
'~
WALL CRACK With the unit shutdown to repair a containment isolation valve, a through wall crack was discovered in the Reactor Water Cleanup System eight (8) inch diameter return line (type 304 SS, schedule 80) on January 6.
The location of the crack was in the heat affected zone of a pipe weld between the inside and outside containment isolation valves.
Radiographic Testing indicated the crack was approximately 5" in length on the pipe inside diameter and approximately 0.75" in length on the pipe outside diameter.
The licensee is also ultrasonic testing all other joints in the clean up system.
Plant restart is expected on January 9, following repairs.
Media interest is expected because of public interest in pipe cracks at nuclear power plants.
The State of Connecticut has been informed.
The media has been contacted and a press release was issued by the licensee.
NRC, Region I, (Philadelphia) received notification of this occurrence by telephone from an inspector onsite, at 2:30 p.m. on January 6.
Contact:
F.Nolan IE, x28019; G.Klingler IE, x28019 Distribution:
Transmitted H St 3. #/
Chairman Hendrie Commissioner Bradford S. J. Chilk, SECY Commissioner Kennedy Commissioner Ahearne C. C. Kammerer, CA Commissioner Gilinsky (For Distribution)
Transmi t'.ea.
MNBBj.Y6 P Bldg 7.' h J.G.Dp,j.O b.
IE _ 3 L. V. Gossick, ED0 H. R. Denton, NRR Region 4 J. J. Fouchard, PA R. C. DeYoung, NRR N. M. Haller, MPA R. J. Mattson, NRR R. G. Ryan, OSP V. Stello, NRR (MAIL)
H. K. Shapar, ELD SS Bldg S N f.x J. J. Cummings, 0IA W. J. Dircks, NMSS R. Minogue, SD b
1448 556 0
PRELIMINARY NOTIFICATION fg L 3 tc
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