ML20033H135

Informs That Response to NRC Bulletin 89-003, Potential Loss of Required Shutdown Margin During Refueling Operations, Acceptable

ML20033H135
Person / Time
Site:	Calvert Cliffs
Issue date:	04/05/1990
From:	Mcdonald D Office of Nuclear Reactor Regulation
To:	Creel G BALTIMORE GAS & ELECTRIC CO.
References
IEB-89-003, IEB-89-3, TAC-75411, TAC-75412, NUDOCS 9004180263
Download: ML20033H135 (4)

Text

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NUCLEAR REGULATORY COMMISSION n

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April 5,1990 p

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Docket Nos. 50-317 and 50-318 l.

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Mr. G. C. Creel Vice President - Nuclear Energy Baltimore Gas and Electric Company Calvert Cliffs Nuclear Power Plant

'MD Rts 2 & 4 P. O. Box 1535 Lusby, Maryland 20657 i

Dear Mr. Creel:

l

SUBJECT:

RESPONSE TO NRC BULLETIN 89-03 " POTENTIAL LOSS OF REQUIRED SHUTDOWN I

MARGIN DURING REFUELING OPERATIONS" - CALVERT CLIFFS, UNIT NOS.-1 AND 2

REFERENCE:

. TAC Numbers 75411 (Unit 1) and 75412 (Unit 2) t On November 21, 1989, the NRC staff issued Bulletin ~89-03 " Potential Loss of Required Shutdown Margin During Refueling Operations." The bulletin requested that all PWR licensees and PWR construction permit holders-take the actions described in the bulletin to ensure that an adequate. shutdown margin is.

maintained during all refueling operations. To accomplish this, three actions l

were described:

1.

Assure that any intermediate fuel assembly configuration (including control rods) intended to be used during refueling is identified and l

evaluated to maintain sufficient refueling boron concentration to L

result in a minimum shutdown margin of approximately 5%.

2.

Assure that fuel loading procedures only allow those intermediate fuel assembly configurations that do not violate the allowable L

shutdown margin and that these procedures are strictly adhered to.

l L

3.

Assure that the staff responsible for refueling operations is l

7 trained in the procedures recommended in item 2 above and understand the potential consequences of violating-these procedures. This training should include the fundamental aspects of criticality control with enriched fuel assemblies.

l.

By ktter dated January 16, 1990, you respond to the subject bulletin. You noted that the issuance of the bulletin was the result of a 10 CFR Part 21 notification submitted by Baltimore Gas and Electric-Company. You further indicated that programs are in place to address the three actions described above.

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Mr. G. C. Creel 2

We consider your response to be satisfactory and are closing the above referenced TAC numbers.

Sincerely, GA eniorPryaectManager Daniel G. Mcdonald, Project Director te I Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation ec: See next page

f i

l Mr. G. C. Creel l

Baltimore Gas & Electric Company Calvert Cliffs Nuclear Power Plant cc:

Mr. William T. Bowen, President Mr. Joseph H. Walter-Calvert County Board of Engineering Divicion Comissioners Public Service Commission of Maryland Prince Frederick, Maryland 20678 l

American Building 231 E. Baltimore Str?et t

Baltimore, Maryland 21202-3486 D. A. Brune, Esq.

General. Counsel Baltimore Gas and Electric Company Ms. Kirsten A.i urger, Esq.

B P. O. Box 1475 Maryland People's Counsel.

Baltimore, Maryland 21203 American Building, 9th Floor 231.E. Baltimore Street Mr. Jay E. Silberg, Esq.

Baltimore, Maryland 21202 Shaw, Pittman, Potts and Trowbridge 2300 N Street, NW Ms. Patricia Birnie' Washington, DC 20037.

Co-Director l

Maryland Safe Energy Coalition P. O. Box 902 l

Ms. G. L. Adams,i.icensing Columbia, Maryland 21044 Calvert Cliffs Nuclear P0wer Plant l

MD Rts 2 & 4, P. O. Box.1535 Lusby, Maryland 20657 Resident Inspector c/o U.S. Nuclear Regulatory Counission P. O. Box 437 L

Lusby, Maryland 20657 Mr. Thomas Magette Administrator - Nuclear Evaluations Department of Natural Resources l

580 Taylor Avenue i

Tawes State Office Building l

PPER B3 L

Annapolis, Maryland 21401 Regional Administrator, Regian I e

1 U.S. Nuclear Regulatory Comission

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475 Allendale Road King of Prussia, Pennsylvania 19406

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Mr. G. C. Creel We consider your response to be satisfactory and are closing the above referenced TAC numbers.

Sincerely, DRIGNAL $!GNED BY, Daniel G. Mcdonald, Senior Project Manager Project Directorate 1-1 Division of Reactor Projects-- 1/11 Office of Nuclear Reactor Regulation cc: See next page Distribution:

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