ML19254E200
| ML19254E200 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 10/18/1979 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| Shared Package | |
| ML19254E201 | List: |
| References | |
| NUDOCS 7910310313 | |
| Download: ML19254E200 (2) | |
Text
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,C UNITED STATES f
'g NUCLEAR REGULATORY COMMISSION
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October 18, 1979
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. Dockets Nos. 50 ./
and Se-31 8 Mr. A. E. Lundvall, Jr.
Vice President - Supply Baltimore Gas & Electric Company P. O. Box 1475-Baltimore, Varyland 21203
Dear Mr. Lundull:
The Commission is issuing the enclosed Safety Evaluation to document our review of the acceptability of:
a) modifications to the chemical and volume control system (CVCS) to reduce pipe cracking; and b) interim operation of Calvert Cliffs Units Nos.1 and 2 until such modifications are completed.
Based on our review of the information you submitted on January 23 and September 11, 1979, we conclude that Items a and b above are acceptable.
This conclusion is based on your September 11, 1979 comitments to:
1.
Replace the Schedule 10 CVCS piping be. ween the charging pump suction inlet and the first suction isolation valve with Schedule 40 piping, 2.
Install 5 gallon capacity stabilizers in the charging pump suction lines,
, 3.
Replace the existing 21/2 gallon capacity stabilizers in the charging pump discharge lines with 5 gallon capacity units, 4.
Complete the modifications to Unit I during the Spring 1980 refueling outage and Unit 2 during the Fall 1980 refueling outage, and 5.
Operate the CVCS in a conservative method (i.e., control the volume control tank pressure at about 40 psig and reduce the nitrogen pressure in the charging pump discharge dampeners during low systen pressure) until the CVCS modifications are completed.
Sincerely, Robert U. Reid, Chief Operating Reactors Branch =4 Division of Operating Reactors
Enclosure:
Safety Evaluation M3 7910310 4
cc u/ enclosure:
See next pace
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Baltimore Gas and Electric Company cc w/ enclosure (s):
James A. Biddison, Jr.
lir. Bernard Fowler General Counsel President, Board of County G and E Building Commissioners Charle Center Prince Frederick, Haryland 20768 Balti are, Maryland 21203 Director, Technical Assessment George F. Trowbridge, Esquire Division Shaw, Pi ttnan, Potts and Office of Radiation Programs Trowbridge (AW-459) 180011 Street, N.W.
U. S. Environmental Protection Agency Washington, D. C.
20036 Crystal Mall #2 Arlington, Virginia 20460 fir. R. C. L. Olson Baltimore Gas and Electric Company V. S. Environmental Protection Agency Roon 922 - G and E Building Region III Office Post Of fice Box 1475 ATTN:
EIS COORDINATOR Baltimore, Maryland 21203 Curtis Building (Sixth Flonr)
Sixth and Walnut Streets fir. Leon B. Russell, Chief Engineer Philadelphia, Pennsylvania 19106 Calvert Cliffs Huclear Power Plant Baltimore Gas and Electric Company Lusby, llaryland 20657 Bechtel Power Corporation Adninistrator, Power Plant Siting Progran ATTH:
fir. J. C. Judd Energy and Coastal Zone Administration Chief Huclear Engineer Department of Natural Resources 15740 Shady Grove Road Tawes State Of fice Building Gaithersbu 9, Ihryland 20760 Annapolis, liaryland 21401 Combustion Engineering, Inc.
ATTt!: Ilr. P. W. Kruse, llanager Engineering Services Post Of fice Box 500 Windsor, Connecticut 06095 Calvert County Library Prince Frederick,liaryland 20678 Director, Department of State Planning 301 West Preston Street Baltinore, Maryland 21201 q.
f1r. R. M. Douglass,llanager Quality Assurance Department Room 923 Gas & Electric Building P. O. Box 1475 Baltimore, Maryland 21203
....