ML20010E562

Notifies That Meeting on single-loop Operating Experience Will Be Held on 810909 in Bethesda,Md.Agenda Encl

ML20010E562
Person / Time
Site:	Peach Bottom
Issue date:	08/26/1981
From:	Stolz J Office of Nuclear Reactor Regulation
To:	Bauer E PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
References
NUDOCS 8109040265
Download: ML20010E562 (3)

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a.'EST

' 1 1981

'Y..,IfIP Docket Mos. 50-277

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Mr. Ethiard G. Bauer, Jr.

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Vice Prenident 8 General Counsel

.l UU' 011981,A Philadelphia Electric Company I'

L 2301 tiarket Streeteet, Tower II ws.g7 '

Philadelphia, Pennsylvania 19101

.%s RE: PEACH BOTTOM N:# 4'a

'*t I so

Dear Mr. Bauer:

By tetter dated July 2,1981, we informed yov that we were proposing to hold a mceting with you and other licensees who have requested approval to oprate at power levels enve 50% with only one rectN.1= tion loop in service in the event the othe p is inoperative. The annm nced purpose of this neeting is to obtain a bet understanding of what might have caused variations in jet pump flow and related paraneters at Prewns Ferry Unit No.1 during single loop operation and how this incident affects approval of your application. We had proposed a range of dates for the neeting to accorodate the people expected to attend. Based on expressed preferences, the meeting on single loop operating experience will be held at 9:00 A.M., Hednesday, September 9,1981 in Room P-118, Phillips Building, 7920 Norfolk Avenue, Bethesda, Maryland. The agenda, a copy of which is enclosed, is the same as that locluded with our rmloes letter.

You are requested to advise your URC project manager of the personnel who will be attending froe your organization.

Sincerely,

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JCli3 I?. ;10;4 l

John F. Stolz, Chief l

Operating Reactors Branch #4 Division of Licensing

Enclosure:

j Feeting Agenda l

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Philadelphia Electric Company ec w/ enclosure (s):

Eugene J. Bradley Philadelp'hia Electric Company Regional Radiation Representative Assistant General Counsel EPA Region III 2301 Market Street Curtis Building (Sixth Floor)

Philadelphia, Pennsylvania 19101 6th and Walnut Streets Philadelphia, Pennsylvania 19106 Troy B. Conner, Jr.

1747 Pennsylvania Avenue, N.W.

M. J. Cooney. Superintendent Washington, D. C.

20006 Ceneration Division - Nuclear Philadelphia Electric C:mpany Raymond L. Hovis, Esq.

2301 Market Street 35 South Duke Street Philadelphia, Pennsylvania 19101 York, Pennsylvania 17401 Government Publications Section Warren K. Rich, Esq.

State Library of Pennsylvania Assistant Attorney General Education Building Department of Natural Resources Commonwealth and Walnut Streets Annapolis, Maryland 21401 Harrisburg, Pennsylvania 17126 j

Philadelphic Electric Company ATTN:

Mr. h T. Ullrich Peach Bottom Atomic Power Station Mr.

A. Heiss, Coordinator Delta, Pennsylvania 17314 Penr.. 'vania State Clearinghouse Governor's Office of State Planning Albert R. Steel, Chairman and Development Board of Supervisors D. O. Box 1323 Peach Bottcm Township Harrisburg, Pennsylvania 17120 R. D. #1 Delta, Pennsjhania 17314 Curt Cowgill U.S. Nuclear Regulatory Commission Office of Inspection and Enforcerent Peach Bottem Atomic Power Station P. O. Box 399 Delta, Pennsylvania 17314 Ron E. Engle, Manager Reload Fuel Licensing (MC 682)

General Electric Company San Jose, California 95125 m

Pr.cposed Meeting with EUR Applicants and

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Purpase of Meeting:

1.

To cetermine what may have caused the jet pur.p flow and other variations ex:erienced by Browns. Ferry Unit I during single loop cperation and 2.

Evaluate whether the Browns Ferry experience 'should result in power limits for other B'n'Rs operating on a single loop.

Agenda:

1.

Discussion of what may have caused tn ;nexpected variatiens in operating parameters when 3rtwas Ferry Unit i exceeded about 60 percent rated power while l

operating with only one recirculation loo,-

2.

Discussion of parameters affected at Erowns Ferry 1 (i.e.. jet pump flow, neutron flux, ccre fl0w, ccre pressure drop, etc.)

3.

Discussion of whether the Browns Ferry i experience would be expeeced at other E'n'Rs operating on one recirculation loop.

If so3 are' safety. iimits likely to be violated or cause complicatiens with respect to core stability, core fica symmetry, pump cavitation er damage to the ' jet pumps and reactor vessel internals.

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