ML20217A032
| ML20217A032 | |
| Person / Time | |
|---|---|
| Issue date: | 08/10/1978 |
| From: | Nolan F, Sniezek J, Whitt K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-78-141A, NUDOCS 9804220133 | |
| Download: ML20217A032 (2) | |
Text
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i PRELIMINARY NOTIFICATION f$'
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August 10, 1978 PRELIMINARY NOTIFICATION OF EVENT OR UNUSU POSSI3LE safety or public interest significance.This arelim gresented is as initially received without verification or evaluation The information and is basically all that is known by IE staff on this date.
l FACILITY:
Babcock & Wilcox Generic S_UBJECT:
PNO-78-141) IMPROPER WELD MATERIALS USED I This PN provides supplemental information tio PN-78-141 which was i August 4, 1978.
e B&W has informed the NRC that Genera? i.lectric, Westinghouse and
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been notified that incorrect weld naterials were used i'
Supplied Reactor Vessels during fabrication.
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nuclear units identified by B&W are as follows:The twelve affected i
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1.
Three liile Island Units 1 and 2
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2.
Crystal River Unit 3 3.
Arkansas Nuclear One, Unit 1 4.
Oconee Unit 3 5.
Rancho Seco Unit 1 6.
flidland Unit 1
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Quad Cities Unit 2 i
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Browns Ferry Unit 1 l
- 9. Turkey Point Unit 3 i
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- 10. Zion Units 1 and 2 8
the incorrect welding materials have potential higher b
c) ~ transition temperature (NDTT) characteristics.
Ctgl relationships in reactor vessel operation need to be adjusted to mo The heatup and cooldown
@l!,$ conservative values than those presently being used.
gg Slant specific bases.g y cooldown limit curves are being prepared by B&W a New heatup and o~ a. a.
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- B&W Vessels supplied to GE
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o*B&W Vessels supplied to Westinghouse i
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Continued Page 2 August 10, 1978
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PNO-78-141A This information is current as of 3 0
'KWWhitt, IE x28019 0 p.m. EST, August 9,1978
Contact:
Distribution:
FNolan, IE x28019 JHSniezek, IE Chairman HeWdrie Transmitted H St g'.' 0 b 228019 Commissioner Kennedy Commissioner Bradford Commissioner Gilinsky Commissioner AhearneS. J. Chilx SE Transmitted:
C. C. Kanner,er, CY CA MNBB /[}D[ H.R.s,k.'Of (For Distribution)
L. V. Gossick P Bid E00 S. H. Hanauer,, EDO Denton, NRR J. G. Dav's, IE J. J. Fouchard, PA Regiondr
R. G. Ryan, OSP (MAIL H. K. Shapar, ELD C. V. Smith,()NMSS OX)Absto R. Minogue, n, 01A SD PRELIMINARY NOTIFICATION s
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