ML20095C742

Application for Amends to Licenses DPR-53 & DPR-69 to Add Analysis Technique to List of Approved Core Operating Limits Analytical Methods in TS for Plant

ML20095C742
Person / Time
Site:	Calvert Cliffs
Issue date:	12/07/1995
From:	Denton R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20095C745	List: ML20095C742 ML20095C747
References
NUDOCS 9512120196
Download: ML20095C742 (6)

Text

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l Ro:EST E. DENTON Baltimore G:s and Electric Company Vice President Calven Cliffs Nuclear Power Plant Nuclear Energy 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 1

410 586-2200 Ext.4455 local 410 260-4455 Baltimore December 7,1995 U. S. Nuclear Regulatory Commission Washington,DC 20555 ATTENTION: Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 License Amendment Request: Add the Convolution Analytical Technique to the Technical Soecifications

REFERENCES:

(a) Letter from Mr. R. E. Denton (BGE), to NRC Document Control Desk, dated November 1,1994, Request for Approval to Use Convolution Technique in Main Steam Line Break Analysis (b) Letter from Mr. D. G. Mcdonald, Jr. (NRC), to Mr. R. E. Denton (BGE),

dated May 11,1995, Approval to Use Convolution Technique in Main Steam Line Break Analysis - Calvert Cliffs Nuclear Power Plant, Unit Nos. I and 2 (TAC Nos. M90897 and M90898)

Pursuant to 10 CFR 50.90, the Baltimore Gas and Electric Company (BGE) hereby requests an amendment to Operating Licenses Number DPR-53 and DPR-69 to add an analysis technique to the list of approved core operating limits analytical methods in the Technical Specifications for Calvert Cliffs Units 1 and 2. In Reference (a), BGE requested NRC approval to use the convolution technique for determining the values ir. the Core Operating Limits Report related to the pre-trip main steam line break event. The NRC approved the use in a Safety Evaluation attached to Reference (b). This amendment would add the convolution technique to the list of approved methodologies in Technical Specification 6.9.1.9.b. As noted above, the convolution technique is already approved, therefore this change is not technical in nature.

He proposed change to Section 6.9.1.9.b is shown in Attachments (2) and (3). He final Technical Specification pages will be renumbered to accommodate the insertion of this change. The same change will be made in the Core Operating Limits Report using the 10 CFR 50.59 process.

We have considered the possibility of significant hazards associated with this change and have determined that there are none (see Attachment I for a complete discussion). We have also determined that operation with the proposed amendment would not result in any significant change in the types or amounts of any I

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Document Control Desk December 7,1995 Page 2 -

effluents that may be released offsite, nor would it result in any significant increase in individual or cumulative occupational radiation exposure. Therefore, the proposed amendment is eligible for categorical exclusion as set forth in 10 CFR SI.22(c)(9). Pu suant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment is needed in connection with the proposed amendment.

'Ihese proposed changes to the Technical Specifications and our determination of significant hazards have been reviewed by our Plant Operations Safety Review Committee and Offsite Safety Resiew Committee, and they have concluded that implementation of these changes will not result in an undue risk to the health and safidy of the public.

This change is requested to be approved by May 15, 1996. No operation of the facility is dependent on approval.

Should you have questions regarding this matter, we will be pleased to discuss them with you.

Very truly yours, r am h

STATE OF MARYLAND  :

TO WIT:

COUNTY OF CALVERT  :

I hereby certify that on the 9(1) day of . 19 5 befpre me, the subscriber, a Notary Public of the State of Maryland in and for CalAAAL) E/ . personally appeared Robert E. Denton, being duly sworn, and states that he is Vice President o%e Baltimore Gas and Electric Company, a corporation of the State of Maryland; that he provides the foregoing response for the purposes therein set forth; that the statements made are true and correct to the best of his knowledge, j information, and b: lief; and that he was authorized to provide the response on behalf of said Corporation. l WITNESS my Hand and Notarial Scal: l MWM b M i Notary Public My Commission Expires: b h Date RED /EMT/ dim Attachments: (1) Determination of Significant llazards (2) Marked-up Technical Specification Page - Unit 1 (3) Marked-up Technical Specification Page - Unit 2

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Dxument Control Desk l December 7,1995 l 1

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cc: D. A. Brune, Esquire J. E. Silberg, Esquire L. B. Marsh, NRC D. G. Mcdonald, Jr., NRC T. T. Martin, NRC Resident Inspector, NRC R. I. McLean, DNR J. H. Walter, PSC 1

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>'~ > , - ~ , ~, 4 Baltimore Gas and Electric Company December 7,1995 ATTACHMENT 0) . DETERMINATION OF SIGNIFICANT IIAZARDS ne change has been evaluated against the standards in 10 CFR 50.92 and has been determined to not involve a significant hazards consideration in that operation of the facility in accordance with the proposed amendment:

1. Would not involve a sigmficant increase in the probability or consequences of an accidentpreviously evaluated.

The proposed change is to add the convolution analysis technique previously approved by the NRC to the list of approved methodologies in Calvert Cliffs' Unit I and 2 Technical Specifications. By letter dated November 1,1994, Baltimore Gas and Electric Company (BGE) requested approval to use the ABB/ Combustion Ergineering (ABB/CE) convolution technique for determining the values in the Calvert ClirTs Core Operating Limits Report (COLR) related to the pre-trip main steam line break event. Approval was given by the NRC in their letter dated May 11,1995. The addition of this technique to the list of approved analytical methods in Technical Specification 6.9.1.9.b is simply intended to identify it as an approved methodology. Therefore, the change does not involve a significant increase in the probability or consequences of an accident presiously evaluated.

2. Would not create the possibility ofa new or diferent type ofaccidentfrom any accident previously evaluated.

The proposed change is to add the convolution analysis technique previously approved by the NRC to the list of approved meti.odologies in Calvert Cliffs' Unit I and 2 Technical Specifications. By letter dated November 1,1994, BGE requested approval to use the ABB/CE convolution technique for determining the values in the Calvert Cliffs COLR related to the pre-trip main steam line break event. Approval was given by the NRC in their letter dated May 11,1995. The addition of this technique to the list of approved analytical methods in Technical Specification 6.9.1.9.b is simply intended to identify it as an approved methodology. Therefore, the change would not create the possibility of a new or different type of accident from any accident previously evaluated.

3. Would not involve a significant reduction in the margin ofsafety.

The proposed change is to add the convolution analysis technique previously approved by the NRC to the list of approved methodologies in Calvert Cliffs' Unit I and 2 Technical Specifications. By letter dated November 1,1994, BGE requested approval to use the ABB/CE convolution technique for determining the values in the Calvert Cliffs COLR related to the pre-trip main steam line break event. Approval was given by the NRC in their letter dated May 11,1995. The addition of this technique to the list of approved analytical methods in Technical Specification 6.9.1.9.b is simply intended to identify it as an approved methodology. Therefore, operation of the facility in accordance with the proposed amendment does not involve a significant reduction in a margin of safety. 1 ATTACHMENT (2) e , , s ,. ,. - s - - s> nc.  : ,~,

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