ML20040D022
| ML20040D022 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 01/06/1982 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| References | |
| GL-81-14, NUDOCS 8201290498 | |
| Download: ML20040D022 (4) | |
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JAN 0 E82 DISTRIBUTION:
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ACRS-10 Mr. A. E. Lundvall, Jr.
PMKreutzer-3 94 Vice President - Supply RAClark O
Baltimore Gas & Electric Company DJaffe P. O. Box 1475 JHeltemes Baltimore, Maryland 21203 Gray File
Dear fir. Lundvall:
In the process of reviewing your June 30, 1981 response to Generic Letter 01-14, Seismic Qualification of Auxiliary Feedwater Systems, we have found it necessary to request additional information. The requested information is enclosed, herein; OMB clearance is not required for this request since it is being transmitted to nine or fewer addressees.
Please provide the responshs t6 the enclosed questions within 60 days following receipt of this. letter.-
Sincerely.
Origina! signed by, Robert A. Clark Robert A. Clark, Chief
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0perating ReacMrs Branch #3 se Division of Licensing C-
Enclosure:
As stated
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REQUEST FOR ADDITIONAL INFCRMATION ON EISMIC QUALIFICATION OF TFE AUXILIARY FEEDWATER SYSTEM Calvert Cliffs Nuclear Plant Units 1 & 2 Question 1 Indicate whether all branch piping associated.with the auxiliary feedwater (AFW) system fully meets the following boundary requirements as specified in Generic Letter 81-14:
(a) Each connected branch piping within the AFW system has a
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second valve which is normally closed or capable of automatic closure when safety function is required.
(b) A point of three orthogonal restraints exists on the branch piping outside the AFW system boundary if any portion of the branch piping is structurally coupled to the AFW system boundary such that the seismic re'sponse of the branch piping transmits loads to the AFW system.
Question 2 Provide the schedule for your proposed general AFW system upgrading program and for proposed modifications of presently I
Non-seismic Class I. items including the chemical addition lines, circuit carrying conduits, and the initiation / control systems.
Question 3 Indicate whether walkdown was performed for the chemical addition lines, conduits, Bordon tube type pressure indicators and remote turbine, rip hand switches, which are presently Nors t
seismic Class I.
For those Non-seismic Class I items for which j
walkdown was performed, clarify whether the walkdown was conducted by personnel experienced in analysis, design, and evaluation of the AFW system.
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~ Question 4 Item 8 on page 7 of your response indicates that all structures j
housing AFW system items are seismically Class 1 designed, yet Item 2 on pages 5 and 6 indicate AFW system items which'are housed and supported in the non-seismic Class 1 Turbine Building.
Indicate all items that are supported by or housed in non-seismic Class 1 structures and justify the acceptability thereof.
Question 5 Provide information on Icad combinations including safe shutdown earthquake (SE) and acceptance criteria used in the seismic qualification of two inch and smaller piping.
Question 6 In the last paragraph on page '4, your response letter stated that "Recent plant modifications have uccraded all electrical power supplies to Class IE."
This appears to contradict the statement in Item 4, Power Supplies, on page 7, "For the AFW, modification, all conduits carrying any circuit,'...., will be vooraded to Class IE...." Provide your clarification.
Question 7 Provide a basis for concluding that the section of the chemical addition line from the AFW pump suction piping to a point beyond the existing manual valve which will be closed is adequately supported to preclude failures in this segment.
l Question 8 Given the information presented in Item 2.b on page 6 of your response, why is a fail'ure of the AFW pump exhaust piping such as " crimping" of the line either incredible or not significantly detrimental to the AFW pump turbine operation?
Question 9 Provide a basis for concluding that the loads induced in.the non.
seismically qualified manual valves are similar to those 7nduced in the seismically qualified valves which are similar to the non-l qualified manual valves in material properties and construction.
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Baltimore Gas and Electric Company cc:
James A. Biddison, Jr.
Ms. Mary Harrison, President
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General Counsel Calvert County Board of County Commissioners Baltimore Gas and Electric Company Prince Frederick, MD 20768 P. O. Box 1475 Baltimore, MD 21203 U. S. Environmental Protection Agency Region III Office George F. Trowbridge, Esquire Attn:
Regional Radiation Representative Shaw, Pittman, Potts and Trowbridge Curtis Building (Sixth Floor) 1800 M Street, N. W.
Sixth and Walnut Streets Washington, D. C.
20036 Philadelphia, PA 19106 Mr. R. C. L. Olson, Principal Engineer Mr. Ralph E. Architzel Nuclear Licensing Analysis Unit Resident Reactor Inspector Baltimore Gas and Electric Company NRC Inspection and Enforcement Room 922 - G&E Building P. O. Bos 437 P. O. Box 1475 Lusby, MD 20657 Bal timore, MD 21203 Mr. Charles B. Brinkman Mr. Leon B. Russell Manager - Washington Nuclear Operations Plant Superintendent
, Combustion Engineering, Inc.
Calvert Cliffs Nuclear Power Plant 4853' Cordell Ave' ue, Suite A-1 n
Maryland Routes 2 & 4 Bethesda, MD 20014 Lusby, MD 20657 Mr. J. A. Tieman, Manager Bechtel Power Corporation Nuclear Power Department Attn: Mr. J. C. Judd Calvert Cliffs Nuclear Power Plant Chief Nuclear Engineer Maryland Routes 2 & 4 15740 Shady Grove Road Lusby, MD 20657 Gaithersburg, MD 20760 Mr. W. J. Lippold, Supervisor-Combustion Engineering, Inc.
Nuclear Fuel Management Attn: Mr. P. W. Kruse, Manager Baltimore Gas and Electric Company Engineering Services Calvert Cliffs Nuclear Power Plant P. O. Box 500 P. O. Box 1475 Windsor, CT 06095 Baltimore, Maryland 21203 PublicDoc$mentRoom Mr. R. E. Denton, General Supervisor Calvert County Library Training & Technical Services Prince Frederick, MD 20678 Calvert Cliffs Nuclear Power Plant Maryland Routes 2 & 4 Director, Department of State Planning Lusby, MD 20657 301 West Preston Street Baltimore, MD 21201 Mr. R. M. Douglass, Manager Ouality Assurance Department Administrator, Power Plant Siting Program Fort Smallwood Road Complex Energy and Coastal Zone Administration P. O. Box 1475 Department of Natural Resources Bal timore, MD 21203 Tawes State Office Building Mr. T. L., Syndor, General Supervisor Operations Quality Assurance Caivert Cliffs Nuclear Power Plant, Maryland Routes 2 &-4 Lusby, MD 20657