ML20054A407
| ML20054A407 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 04/02/1982 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Garrity Maine Yankee |
| References | |
| GL-81-14, IEB-79-02, IEB-79-04, IEB-79-07, IEB-79-14, IEB-79-2, IEB-79-4, IEB-79-7, IEB-80-11, IEIN-80-21, NUDOCS 8204150425 | |
| Download: ML20054A407 (4) | |
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Gy APR 2 1982 DISTRIBUTION:
Docket File NRC PDR L PDR Docket No. 50-309 3 Rdg DEisenhut JHeltemes N
0 ELD Mr. John H. Garrity, Senior Director fhS-10 N
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Augusta. Maine 04336 ar Gray File G
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Dear Mr. Garrity:
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RE: Seismic Qualification of Auxiliary Feedwater System We have reviewed your August 5,1981 response to our Generic Letter 81-14 and have determined that the additional information identified in the enclosure is necessary to continue our review. Please provide this infonnation by May 7,1982.
OMB clearance is not required for this request since it is being-transmitted to nine or fewer addressees.
Sincerely, ocianal mee w.
brics 01.Tanadw Art Robert A. Clark, Chief /
Operating Reactors Branch #3 Division of Licensing
Enclosure:
As stated l
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NRC FORM 318 (10 80) NRCM ONO OFFIClAL RECORD COPY uso m i,i su-oso
Maine Yankee' Atomic Power Company cc:
E. W. Thurlow, Pr'esident Mrs. L. Patricia Doyle, President Maine Yankee Atomic Power Company SAFE POWER FOR MAINE Edison Drive Post Office Box 774
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Augusta, Maine 04336 Camden, Maine 04843 Mr. Donald E. Vandenburgh First Selectman of Wiscasset Vice President - Engineering Municipal Building Yankee Atomic Electric Company U. S. Route 1 20 Turnpike Road Wiscasset, Maine 04578 Westboro, Massachusetts 01581 John A. Ritsher, Esquire Atomic Safety and Licensing Board Ropes & Gray U.S. Nuclear Regulatory Commission 225 Franklin Street Washington, D. C.
20555 Boston, Massachusetts 02110 David Santee Miller, Esq.
Mr. Rufus E. Brown 213 Morgan Street, N. W.
Deputy Attorney General Washington, D. C.
20001 State of Maine Augusta, Maine 04330 Mr. Paul Swetland Resident Inspector / Maine Yankee Mr. Nicholas Barth c/o U.S.N.R.C.
Executive Director P. O. Box E Sheepscot Valley Conservation Wiscasset, Maine 04578 Association, Inc.
P. O. Box 125 Mr. Charles B. Brinkman Alan, Maine 04535 Manager - Washington Nuclear Operations ^
Combustion Engineering Inc.
Wiscasset Public Library Association 4853 Cordell Avenue, Suite A-1 High Street Bethesda, Maryland 20014 Wiscasset, Maine 04578 Mr. Robert H. Groce Mr. Torbet H. Macdonald, Jr.
Senior Engineer - Licensing Office of Energy Resources Maine Yankee Atomic Power Company State House Station #53 1671 Worcester Road Augusta, Maine 04333 Framingham, Massachusetts 01701 Robert M. Lazo, Esq., Chairman Atomic Safety and Licensing Board U.S. Environmental Protection Agency U.S. Nuclear Regulatory Commission Region 1 Office Washington, D. C.
20555 ATTN:
Regional Radiation Representative JFK Federal Building Dr. Cadet H. Hand, Jr., Director Boston, Massachusetts 02203 Bodega Marine Laboratory University of California Bodega Bay, California 94923 Mr. E. C. Wood, Plant Manager Maine Yankee Atomic Power Company State Planning Officer P. O. Box 3270 Executive Department Wiscasset, Maine 04578 189 State Street Augusta, Maine 04330 1
Regional Administrator Nuclear Regulatory Commission, Region I Office of Executive Director for Operations 631 Park Avenue King of Prussia, Pennsylvania 19406 e
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I Maine Yankee Nuclear Plant SEISMIC CUALIFICATION OF THE AUXILIARY FEEDWATER SYSTEM REQUEST FOR ADDITIONAL INFORMATION
' Question 1: of Generic Letter 81-14 (GL 81-14) defines the auxiliary feedwater (AFW) system to be considered as:
(a) "The AFW system boundary'from suction to discharge (incluoing the water source and heat sink) shall include those portions of the system required to accomplish the AFW
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system function and connected branch piping up to and including the second valve which is normally closed or capable of automatic closure when the safety function is required."
(b) "The AFW system boundary shall also include'any portion of branch piping that is structurally coupled to the AFW system boundary such that the seismic response of'the branch piping transmits loads to the AFW system.
As a minimum, this includes the branch lines outside the AFW system boundary to a point of three orthogonal restraints."
(c) "All mechanical and electrical equipment, piping (e.g.,
instrument air), conduits and cable trays, which are necessary or contain items which are necessary for the operation of the AFW system, shall also be considered."
(d) "In socition, the structures housing these systems and-components.shall be included."
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7 Clarify the extent to which your AFW system boundary, considered in your August 5,1981 response letter, coincides with the boundary defined in GL S1-14, especially parts (a)~and (b) above.
Question 2:.
Generic letter 81-14, Enclosure 1, Part A states:
"Specify whether your AFW system is (') designed, constructed, and s
maintained (and incluced within the scope of seismic related Bulletins 79-02, 79-04, 79-07, 79-14, and 80-11, and IE
'Ihformation Notice 60-21), in accordance with Seismic Category I requirements (e.g., conformance to Regulatory Guides 1.29 and the applicable portions of the Standaro Review Plan or comparable criteria) or (b' designed, constructed and maintained (and includeo within the scope of seismic relateo Bullet' ins 79-02, 79-04, 79-07, 79-14, and 80-11, and IE Information Notice 80-21) to withstand a Safe Shutdown Earthquake (SSE) utilizing the analytical, testing, evaluation methods and acceptable criteria consistent with other safety-grade systems in'your plant."
Clarify the extent to which your AFW system is included within the scope of seismic related Bulletins 79-02, 79-04, 79-07, 79-14, and 80-11, and IE.lnformation Notice 80-21.
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