ML20056F985
| ML20056F985 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 08/25/1993 |
| From: | Denton R BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20056F986 | List: |
| References | |
| TAC-M68525, TAC-M68526, NUDOCS 9309010124 | |
| Download: ML20056F985 (3) | |
Text
BALTIMORE GAS AND ELECTRIC k
1650 CAtNERT CUFFS PARKWAY. LUSBY, MAP (!. AND 20657-4702 ROBcRT E. DENTON VICE PRESIDENT NUCLEAR cNERGY (mo) reo-44ss Augus 25,1993 l
l U. S. Nuclear Regulatory Commission l
Washington, DC 20555 A'ITENTION:
Document Control Desk
SUBJECT:
Calvert Cliffs Nuclear Power Plant i
Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 Emergency Diesel Generator Project - Instrumentation and Control Systems Desien Report
REFERENCES:
(a) letter from Mr. D. G. Mcdonald, Jr. (NRC) to Mr. G. C. Creel i
l (BG&E), dated October 10,1990, Response to Station Blackout Rule l
(TAC Nos. M68525 and M6S526)
(b)
Ixtter from Mr. D. G. Mcdonald, Jr. (NRC) to Mr. G. C. Creel (BG&E), dated February 12, 1991, Response to Station Blackout Rule (TAC Nos. M68525 and M68326)
(c)
Ixtter from Mr. R. E. Denton (BG&E) to NRC Document Control Desk, dated July 7,1993, Modification to Our Station Blackout Rule
Response
(d)
Ixtter from Mr. R. E. Denton (BG&E) to NRC Document Control Desk, dated July 20, 1993 Emergency Diesel Generator Project -
SACM Diesel Generator and Mechanical Systems Design Report (e)
Letter from Mr. R. E. Denton to NRC Document Control Desk, dated July 26,1993, Emergency Diesel Generator Project - Electrical l
Engineering Design Report In response to the requirements of 10 CFR 50.63, Baltimore Gas and Electric Company is adding one safety-related diesel generator and one non-safety-related diesel generator at our two. Unit Calvert Cliffs Nuclear Power Plant. These diesel generators enhance our ability to meet station blackout requirements. After the installation of the new diesel generators is complete, we will have one diesel generator dedicated to each of the four engineered safety features busses, with the non-l safety-related diesel generator used to mitigate station blackout conditions and as a standby for any of the four dedicated diesel generators. The NRC has reviewed and approved the basic concept of our station blackout response capability as both an alternate AC and AC independent site 9309010124 930825 f
00f DR ADDCK 0500 7
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Document Control Desk August 25,1993 Page 2 (References a and b). We have modified our station blackout response (Reference c) and are awaiting NRC approval of the change. The initial approval was contingent upon our submittal to the NRC of design information concerning: the new diesel generator installation, the change in our onsite emergency electrical system, and the alternate AC power source. The attachment to this letter is one of the submittals requested.
In order to gain NRC approval of the modifications to our onsite emergency electrical system, we are preparing a series of design reports for NRC review. These design reports will cover appropriate aspects of the diesel generator design and qualification, and changes to our electrical system. The design reports have been broken down into several groups to aid in their review by the NRC. These groups are: Civil Engineering, SACM Diesel Generator and Mechanical Systems, Electrical Engineering, and Instrumentation and Controls.
In addition to these design reports, other l
l correspondence will be provided to describe the alternate AC power source. Requests to change the l
Technical Specifications will be supplied in separate submittals.
l ne Instrumentation and Control Systems Design Report is attached. This report describes the instrumentation and controls for the SACM diesel generator both in the Diesel Generator Building and in the Main Control Room. In addition,it discusses the instrumentation and control systems for the diesel building support systems, such as the heating and ventilation system and fire protection.
The report discusses the design bases and gives a system description for the various control systems.
An important function of this report is to detail our commitment to various ccJes, standards and Regulatory Guides. Our commitments and exceptions to the various codes and standards are explicitly described in the various sections of the report. Note, however, that these commitments are for design, procurement, fabrication and construction only; operational and surveillance commitments will be made through the License Amendment Request.
His is Revision 0 of the subject report. While a majority of information concerning the instrumentation ar;d control systems is contained in this report, some information is contained in other reports. The function and some of the control systems for the diesel generator are discussed in the SACM Diesel Generator and Mechanical Systems Design Report (Reference d). The electrical distribution system for the plant is described in the Electrical Engineering Design Report (Reference e). Responses to questions or concerns arising from the NRC review will be included in future report revisions.
We regrest that this report be reviewed and approved by March 1,1994. This date will support installation of the majority of the instrumentation and control systems equipment.
Should you have any questions regarding this matter, we will be pleased to discuss them with you.
Very truly yours,
[NDW RED / PSF / psf /dlm Attachment
1 l
Document Control Desk August 25,1993 i
Page 3
{
cc:
D. A. Brune, Esquire J. E. Silberg, Esquire t
l R. A. Capra, NRC a
D. G. Mcdonald, Jr., NRC i
T. T. Martin, NRC P. R. Wilson, NRC R. I. Mclean, DNR 4
J. H. Walter, PSC 4
}
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