ML20197H945
| ML20197H945 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 12/10/1998 |
| From: | Cruse C BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9812140214 | |
| Download: ML20197H945 (4) | |
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CH ARIES II. CRUSE Baltimore Gas and Electric Company Vice President Calvert Cliffs Nuclear Power Plant Nuclear Energy 1650 Calvert Cliffs Parkway Lusby. Maryland 20657 i
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December 10,1998 l
U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Document Control Desk
SUBJECT:
Calvert Cliffs Nuclear Power Plant j
Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 Response to Clarification Regarding NRC Question Nos. 4.2.8 and 5.10.6; Integrated Plant Assessment Reoorts: License Renewal Aeolication
REFERENCES:
(a)
Letter from Mr. C. H. Cruse (BGE) to NRC Document Control Desk, dated April 8,1998," Application for License Renewal" (b)
Letter from Mr. D. L. Solorio (NRC) to Mr. C. H. Cruse (BGE), dated September 4,1998," Request for Additional Information for the Review of the Calvert Cliffs Nuclear Power Plant, Units 1 & 2, Integrated Plant Assessment for Fire Protection System" (c)
Letter from Mr. D. L. Solorio (NRC) to Mr. C. H. Cruse (BGL), dated August 26,1998, " Request for Additional Information for the Review of the Calvert Cliffs Nuclear Power Plant, Units 1 & 2, Integrated Plant Assessment for the Reactor Pressure Vessels and Control Element Drive Mechanism 1 Electrical" (d)
Letter from Mr. D. L. Solorio (NRC) to Mr. C. H. Cruse (BGE), dated November 13,1998, " Clarification of Several NRC Requests for Additional Information on Calvert Cliffs Nuclear Power Plant License Renewal Application Submitted by the Baltimore Gas and Electric Company" Reference (a) forwarded the Baltimore Gas and Electric Company (BGE) License Renewal Application (LRA). References (b) and (c) forwarded questions from NRC staff on two sections of the BGE LRA.
Reference (d) reported efforts between NRC staff and BGE to clarify certain questions, and provided clarified question numbers 4.2.8 and 5.10.6. Attachment (1) provides BGE's response to Reference (d).
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December 10,1998 -
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l Should you have further questions regarding this matter, we will be pleased to discuss them with you.
1 Very truly yours, F
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Q wV STATE OF MARYLAND
- TO WIT:
COUNTY OF CALVERT i
I, Charles H. Cruse, being duly sworn, state that I am Vice President, Nuclear Energy Division, Baltimore Gas and Electric Company (BGE), and that I am duly authorized to execute and file this response on behalf of BGE. To the best of my knowledge and belief, the statements contained in this f
document are true and correct. To the extent that these statements are not based on my personal knowledge, they are based upon information provided by other BGE employees and/or consultants. Such information has been reviewed in accordance with company practice and I believe it to be reliable.
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Subscribed and sworn before me, a Notaryfublic in and for the State of Maryland and County of l
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WITNESS my Hand and Notarial Seal:
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Attachment:
(1) Response to Clarification Regarding NRC Question Nos. 4.2.8 and 5.10.6; Integrated Plant Assessment Reports; License Renewal Application cc:
R. S. Fleishman, Esquire C. I. Grimes, NRC J. E. Silberg, Esquire D. L. Solorio, NRC S. S. Bajwa, NRC Resident inspector,NRC A. W. Dromerick, NRC R.1. McLean, DNR H. J. Miller, NRC J. H. Walter, PSC
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ATTACHMENT (1) i i
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RESPONSE TO CLARIFICATION REGARDING NRC QUESTION NOS. 4.2.8 AND 5.10.6; INTEGRATED PLANT ASSESSMENT REPORTS; LICENSE RENEWAL APPLICATION Baltimore Gas and Electric Company Calvert Cliffs Nuclear Power Plant December 10,1998
ATTACHMENT (1)
RESPONSE TO CLARIFICATION REGARDING NRC QUESTION NOS. 4.2.8 AND 5.10.6; INTEGRATED PLANT ASSESSMENT REPORTS; LICENSE RENEWAL APPLICATION Quefilon ITo. 4.2.8 It appears that the current Unit I pressure temperature (P-T) limits are applicable for 60 years. Confirm that the current Unit 1 P-T limits are applicable for 60 years. If the current Unit 1 P-T limits are not applicable for 60 years, will Unit I have sufficient operating window (difference between P-T limits and reactor coolant pump seal limits) to operate the plant at the end of the license renewal term.
BGE Response Baltimore Gas and Electric Company License Renewal Application Section 2.1.3.2 states, in part, that
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the Unit 1 P-T limits are " valid beyond 48 effective full power years." This statement was based on engineeringjudgment that took into account the most recent data from the McGuire plant, which had yet to be incorporated formally into the P-T curves. Based on ourjudgment, the current Unit 1 P-T limits will remain valid for 48 effective full power years, which equates to 60 operating years, based on an 80% capacity factor. The McGuire data causes a change in the relationship between the fluence and the adjusted reference temperature, resulting in higher fluence for the same adjusted reference temperature. Baltimore Gas and Electric Company is incorporating that change, and others, under the current license. We believe the result will show that the current Unit 1 P-T limits will remain valid l
up to a fluence of approximately 4.95x10" n/cm, which will occur after 60 operating years.
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l Question No. 5.10.6 Verify that the fire protection screening tool has been updated since its inception and that changes to the Updated Final Safety Analysis Report, Fire Protection (FP) Program documentation, and the Interactive Cable Analysis (reference Section 3.3.2 of Final Safety Evaluation dated April 4,1996) have been reviewed and captured in the FP screening tool as appropriate.
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Response
The FP Screening Tool has been updated since its inception. Changes to the Updated Final Safety Analysis Report, FP Program documentation and the Interactive Cable Analysis have been reviewed and captured in the FP Screening Tool as appropriate.
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