ML19275A006

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Requests Amend to License DPR-69 to Modify Tech Specs to Include measurement-calculational Uncertainties of 6% & 7%
ML19275A006
Person / Time
Site: Calvert Cliffs Constellation icon.png
Issue date: 08/27/1979
From: Lundwall A
BALTIMORE GAS & ELECTRIC CO.
To: Harold Denton
Office of Nuclear Reactor Regulation
References
NUDOCS 7908300474
Download: ML19275A006 (3)


Text

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BALTIMORE GAS AN D ELECTRIC COMPANY GAS AND ELECTRIC DUILDING B A LTI M O R E, M A RYLA N D 21203 ARTHUR c. LUN DVALL,*lR.

vice P as.os at sum.

Mr. R. E. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Subject:

Calvert Cliffs Nuclear Power Plant Unit No. 2, Docket No. 50-318 Recuest for Amendment to Operating License

Reference:

a) NRC letter dated 6/14/79 from Reid to Lundvall, License Anendment #39 to Operating License DPR-53, Docket No. 50-317 b) BG&E letter dated 7/11/79 from Lundvall to Reid, Proposed Finding of No Unreviewed Safety Question on Unit 2, Cycle 3 Reload Core Design.

Dear Mr. Denton:

Baltimore Gas and Electric Company hereby requests an Amendment to Operating License DPR-6') for Calvert Cliffs Unit 2. Unit 2 is presently operating in its second cycle. The purpose of this letter is to request modifications to the present Technical Specifications to include measurement-calculational uncertainties of 6.0 percent and 7.0 percent on Fr and Fq, respectively. These same uncertainties were recently approved for Calvert Cliffs Unit 1 in Reference (a).

Technical Snecification Channes

'Ihe Calvert Cliffs Unit Number 2 Technical Specifications presently contain the following measurement-calculational uncertainties:

Base Ioad Oneration Load Follov Oueration Fq = u + o 5.8% 10.0%

Fr = F + o 5.1% 8.0%

The current Calvert Cliffs Unit 1 Technical Specification measurement-calculational uncertainties are:

Fq = V + o 7.0%

Fr=E+o 6.0%

2032 105 In order to incorporate the above Unit 1 uncertainties into Unit 2, the Technical Specification changes indicated in Attachment 1 are required.

7908300//h M

Mr. R. E. Denton Page 2 August 27, 1979 Safety Review The proposed changes have been reviewed by our Plant Operations and Safety Review Committee and Off-Site Safety and Review Committee and they have cGncluded that granting of the proposed changes vill not result in an undue risk to the health and safety of the public.

Schedule As explained in Reference (b), we are presently working toward a Unit 2, Cycle 3 reload core design which can result in the conclusion that there is no unreviewed safety question as defined by 10 CFR 50.59 That reload design vill be based on measurement-calculational uncertainties of 6.o percent and 7.0 percent on Fr and Fq, respectively. Therefore, your consideration and approval of this application is requested prior to startup of Cycle 3, which is presently scheduled for November 21, 1979 Fee Determination We have determined, pursuant to 10 CFR Part 170, Paragraph 170.22, that this amendment requent consists of a single Class III Amendment, and, accordingly, we are enclosing a check in the amount of $h,000.00 to cover the specified fee. This determination is made based on the fact that the exact issue was previously reviewed by NRC on the Calvert Cliffs Unit No. 1 docket as part of the review for Amendment No. 39 vhich approved operation in Cycle k. The NRC Safety Evaluation attached to that amendment specif-iaally addressed Uncertainty in Nuclear Power Peaking Factors in paragraph 3.2.

BALTIMORE GAS ELECTR MPANY s,e T fma.m' n.

~ 'Vice Presfdeft Supply STATE OF MARYLAND:

TO WIT:

CITY OF BALTIMORE:

Mr. A. E. Lundvall, Jr. being duly sworn states that he is Vice President of the Baltimore Gas and Electric Company, a corporation of the State of Maryland; that he executed the foregoing Amendment for the purposes therein set forth; that the statements made in said Amendment are true and correct to the best of his knowledge, information and belief; and that he was authorized to execute the Amendment on behalf of said corporation.

WITNESS Ay hand and Notarial Seal.

O /

G]v k %v /

My Commission expires: k i A/ /p/

3 c g 2032 106

Mr. R. E. Denton Page 3 August 27, 1979 Attachments (1) Technical Specification Changes (2) BGLE Check No. A0142775 cc - J. A. Biddiuon, Esquire G. F. Trowbridge, Esquire Mr. E. L. Conner, Jr. - NRC M . P. W. Kruse - CE Mr. J. W. Brothers - Bechtel 2032 107

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