ML20140G551
| ML20140G551 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 06/10/1997 |
| From: | Cruse C BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| RTR-NUREG-1465 TAC-M86396, TAC-M86397, TAC-M86437, TAC-M86438, NUDOCS 9706160339 | |
| Download: ML20140G551 (2) | |
Text
s CumEs 11. Cuvsc Baltimore Gas and Electric Company Vice President Calvert Cliffs Nuclear Power Plant Nuclear Energy 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410 495-4455 June 10,1997 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 Extension of Control Room Habitability Analysis Submittal Date
[ TAC Nos. M86396. M86397. M86437. ansi M86438)
By Reference (a), we notified you of our expectations to submit our Cor. trol Room thyroid dose analysis by July 31,1996. A one-year extension of the proposed submittal date was requested in Reference (b), and approved in Reference (c).
As noted in Reference (b), one of the more significant assumptions currently being pursued in our Control Room thyroid dose analysis is the application of the timing aspects of the revised accident source terms of NUREG-1465. The methodology and licensing implications associated with the adoption of the revised accident source terms are the subject of an initiative being pursued by the ind istry and the Nuclear Energy Institute. Baltimore Gas and Electric Company is not officially participating in this industry initiative, although we have been following the developments of the initiative, and are basing our analysis on the generic methodology being developed through the initiative. Nuclear Regulatory Commission staff has requested that non-participating licensees not submit analyses using the new source terms until the pilot plant submittals have been approved, and the staff has issued guidance on the use of the new source terms.
In accordance with NRC staff direction, we do not plan to submit this analysis for approva' until after the
)
pilot plant submittals have been approved.
g7 As completion of the review of the pilot plant submittals is not expected before n;id-1998, we propose extending our commitment to submit the thyroid dose analysis to December 31,1998. In the meantime, the interim engineering analysis for thyroid dose, submitted in Reference (d), and approved in Reference (e),
will continue to provide assurance that our Control Room operators are adequately protected against f d )<J) significant iodine uptake following a loss-of-coolant accident.
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i Should you have questions regarding this matter, we will be pleased to discuss them with you.
Very truly yours, vl ku&
j,gt CHC/NH/ dim
REFERENCES:
(a)
Letter from Mr. R. E. Denton (BGE) to NRC Document Control Desk, dated June 7,1995, Control Room Habitability - Thyroid Dose Analysis (TAC Nos. M86396; M86397)
(b)
Letter from Mr. C. H. Cruse (BGE) to NRC Document Control Desk, dated June 18, 1996, Extension of Control Room Habitability Analysis Submittal Date (TAC Nos. M86396, M86397, M86437, and M86438)
(c)
Letter from Mr. A. W. Dromerick (NRC) to Mr. C. H. Cruse (BGE),
dated July 12, 1996, Extension of Control Room Habitability Analysis Submittal Date - Calvert Cliffs Nuclear Power Plant, Unit Nos. I and 2 (TAC Nos. M86396, M86397, M86437, and M86438)
(d)
Letter from Mr. R. E. Denton (BGE) to NRC Document Control Desk, dated May 6,1993, Control Room Habitability - Interim Engineering Analysis for Thyroid Dose (e)
Letter from Mr. D. G. Mcdonald, Jr. (NRC) to Mr. R. E. Denton (BGE),
dated June 22, 1995, Control Room Habitability Interim Analysis for Thyroid Dose, Calvert Cliffs Nuclear Power Plant, Unit Nos. I and 2 (TAC Nos. M86396, M86397, M86437, and M86438) cc:
R. S. Fleishman, Esquire H. J. Miller, NRC J. E. Silberg, Esquire Resident inspector, NRC A. W. Dromerick, NRC R. I. McLean, DNR Director, Project Directorate I-1, NRC J. H. Walter, PSC l
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