ML20151U695

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PNO-77-099:on 770609,facility Was Shutdown Due to Safety Analysis Error.Licensee Proceeded with Refueling Outage Which Had Been Previously Scheduled for 770702
ML20151U695
Person / Time
Site: Yankee Rowe
Issue date: 06/10/1977
From: Klingler G, Nolan F, Sniezek J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PNO-77-099, PNO-77-99, NUDOCS 9809110124
Download: ML20151U695 (1)


Text

rwr A o A r-bn PRELIMINARY NOTIFICATION OF EVENT OR UN is 10, 1977 POSSIBLE safety or public interestThis preliminary USUAL OCCURRENCE -PNO 99 sienificance.utes EARLY notice of a presented is as initially received withand i The information Yankee Rowe (DN 50-29) staff on this date.

Facility:

Yankee Atomic Electric Company Rowe, Massachusetts

Subject:

SAFETY ANALYSIS ERROR CAUSES PLANT S licensee found an error 'in the analysisDuring revie

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1 n

or the next core reload, the will flow to the reactor core. post accident cooling water will f The error also affects the analysisthe pi g

for the present core.

Appendix K limits for the small breakSince the licens o establish that the 10 CFR 50, further analysis, the licensee decided tlevels, plan analysis can be met at all power e

to 50% power.

Following been previously scheduled for July 2p.m., June 9, 1977

, 1977.e refueling outage which had Media interest is expected because of th shutdown.

standard press release is planned by the lithe Common shutdown.

een informed. A A press release is being considered by Rcensee on the forthc NRC, Region I, egion I.

occurrence by telephone call from the Ma(Philadelphia) rece g,

M 1977.

cation of this

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Information on the reanalysis was receinager of Operatiots on June 8

/;

9, 1977.

ved at 1:35 p.m. on June O

Contact:

GKlingler, IE x27451 FNolan, IE x27451 g

Distribution:

JSniezek, IE x27451 Chairman RowdenTransmitted H St C.

g Commissioner Kennedy C. C. Kammerer, CA Commissioner Gilinsky S. J. Chilk, SECY G. F. Murphy, JCAE H. H. Whiteside,-SCNR Transmitted: HNBB H. R. Myers, HCEE

~

L. V. Gossick EDO P Bldg __ e S. H. Hanauer,, EDO E. G. Case, NRR_

SS Bldg __.

i J. A. Harris, PA C. V. Smith, NMSS W G. Mcdonald, MIPC R. G. Ryan, OSP Luge (

H. K. Shapar. ELD T. J. g)

McTiernan,'OIA E. Volgenau, IE Region ~

PRELIMINARY NOTIFICATION 9009110124 770610

-7 99

PDR,

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