ML20151Y147

PNO-77-128:on 770711,Surry Unit 2 Was Shutdown Due to Increased Primary to Secondary Leakage in 2C Sg.Insp on 770714 Showed,Tube Plug Missing from Leaking Tube.Region II Issuing Press Release

ML20151Y147
Person / Time
Site:	Surry
Issue date:	07/15/1977
From:	Constable G, Sniezek J, Whitt K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PNO-77-128, NUDOCS 9809180124
Download: ML20151Y147 (1)

Text

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m PRELIMINARY NOTIFICATION July 15,1977 PRELDf1 NARY NOTIFICATION OF EVENT OR UNUSUAL OCC This prelitainary notification constitutes EARLY notice of an event of

' POSSIBLE safety or public interest. significance. The infortnation presented is as -initially received without verification or evaluation  !

_and is basically all that is known by "IE staff on this date.

Facility: Virginia Electric and Power Company Surry Unit No. 2 (DN 50-281)

Surry, Virginia i

Subject:

Steam Generator Tube Leak Surry, Unit No. 2 was shutdown on 7/11/77 due to increased primary to secondary leakage in 2C steam generator. Measured leakage rate was 0.31 gpm, which exceeded the 0.3 gpm license limit.

Inspection on 7/14/77 showed that a tube tube. The plug had either fallen out or alug was missing from a leaking ..

. .ad not been installed. An inspection of 2B steam generator showed some leaking tubes and leaks i,

around tube plugs. 2A SG remains to be inspected. VEPC0 now estimates that Surry Unit No. 2 will be shutdown for about three weeks. NRR approval is required prior to startup.

u+: .

7 Region issuing aII press (Atlanta) is issuing a press release. The licensee anticipates release.

Region II received notification of the ex~ tended outage by telephone '

from the Surry Station Manager at 11:00 a.m. 7/15/77.

Contact:

KWWhitt, IE x27451 GLConstable. IE x27451 JHXniezek, IE 27451 d

Distribution:TransmittedHStYMd; Commissioner Kennedy C. C. Kammerer, CA O

, Commissioner Gilinsky G. F. Murphy, JCAE /

' S. J. Chilk, SECY H. H. Whitesider SCNR /

, _. .H. P.. Myers, HCEE Transmitted: MNBBd!IT L. V. Gossick, EDO PB1d3D W E. G. Case, NRE SS Bldg $ d .

i S. H. Hanauer, EDO C. V. Smith, HMSS

, J. A. Harris, PA O:

W. G. Mcdonald, MIPC Luge (MAIL R. G. Ryan, OSP T.'J.RDTe)rnan,0IA E. VolgenJa , IE 7

. H. K. Shapar, ELD Region;21 R # '

y PRELIMINARY NOTIFICATION

'I 9809180124 770715 <

PDR I&E . -

PNO-77-128 PDR *

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