ML20198J150
| ML20198J150 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 01/08/1998 |
| From: | Cruse C BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9801140048 | |
| Download: ML20198J150 (2) | |
Text
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CX1.e311. Ctat B:3timore Gin end Electric Canpany Vice Preelent -
Calvert Cliffs Nuclear Power Plant Nuclea.- Energy 1650 Calvert Cliffs Parkway Lusby, Maryland 20657
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410 495-4455 January 8,1998
.o U. S. Nuclear Regulatory Commission LWashington,DC 20555 A'ITENTION:
Document Control Desk
SUBJECT:
Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50 318 Request for Additional Information - Emergency Diesel Generator Upgrade P2pject - Temocrary Exemotion Request
REFERENCES:
(a)
Letter from hd. C. H. Cruse (BGE) to NRC Document Control Desk, r
deted Sentember 12, 1997, Emergency Diesel Generator Upgrade Project - Temporary Exemption Request.
(b)
Telephone Call, Mr. A. W. Dromerick (NRC) to Mr. E. M. Tyler (BGE),
December 11,1997, same subject s
Reference (a) submitted a request for temporary exemption from General Desiga Criteria 2 (1967 draft) to allow two emergency diesel generator (EDG) missile shields to be removed for the EDG upgrade
- pmject, e
in Reference (b), a question was asked about how much time is required to replace the missile s~nield and how many people are required to perform this operation. As stated in Reference (a), when the missile shield is removed, it is left connected to the crane used to remove it. A crane operator remains at the crane controls during the tim-the missile shield is removed. In addition to the crane operator, three people are used to handle the movement of the shield and fasten it in place. These people are drawn from the crew working on the diesel upgrade since the shield is removed only when they are working in the area. The time required to reinstall the missile shield is a approximately I hour and 15 minutes. This
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time includes 30 minutes to 45.ninutes to move and position the shield, and 30 minutes to completely torque a minimum of 13 bolts to I old it in place. The installation time is considered sufficient since plant procedures require that the missile shield be reinstalled on an adverse weather watch, ratner than g
waiting until a waming is issued.
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[,, Qix: ment Control Desk January 8,1998 -
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,4 Should you have further questions regarding this matter, we will be pleased to discuss them with you.-
Very truly yours,-
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14i V CHC/EMT/ dim 4
.cc:
R. S. Fleishman, Esquire -
H. J. Miller, NRC J. E. Silberg, Esquire Resident inspector, NRC A. W. Dromerick, NRC -
R.1. McLean, DNR
- Director, Project Directorate 1 1, NRC J. II. Walter, PSC 1
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