ML20052A732
| ML20052A732 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/15/1982 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Counsil W NORTHEAST NUCLEAR ENERGY CO. |
| References | |
| GL-81-14, NUDOCS 8204290091 | |
| Download: ML20052A732 (4) | |
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DCS M ON APR 15 m2 (v s as Docket No.50-33G f
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ECEIVED APRg2 lh I L
fir. W. G. Counsil, Vice President Nuclear Engineering & Operationc 9
Northeast Huclear Energy Company P. O. Box 270 4
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Hartford, Connecticut 06101 g
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Dear Mr. Counsil:
In our review of your July 24, 1981 response to the February 10, 1981 Cencric Letter No. 81-14 on Seismic Qualification of Auxiliary Feedwater Systems, we find the additional information identified in the enclosure is needed to complete our review.
Uc request you provide the additional information as soon as practical ~,
but not later than 45 days after receipt of this letter.
The reporting and/or recordkeeping requirenents contained in this letter affect fewer than ten respondents; therefore, Of18 clearance is not required under P.L.96-511.
Sincerely, Original signed by.
C h v \\e3 In % m et %
Robert A. Clark, Chief Operating Reactors Branch 93 Division of Licensing
Enclosure:
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Northeast Nuclear Energy Company cc:
William H. Cuddy, Esquire Mr. John Shedlosky Day, Berry & Howard Resident Inspector / Mills' tone Counselors at Law c/o U.S.N.R.C.
One Constitution Plaza P. O. Drawer KK Hartford, Connecticut 06103 Niantic, CT 06357 Mr. Charles Brinkman Regional Administrator fianager - Washington Nuclear Nuclear Regulatory Commission Region I Operations C-E Power Systems Office of Executive Director for Operatior 631. Park Avenue Combustion Engineering, Inc.
King of Prussia, Pennsylvania 19406 4853 Cordell Aven., Suite A-1 Bethesda, MD 20014 Mr. Lawrence Bettencourt, First Selectman Town of Waterford Hall of Records - 200 Boston Post Road Waterford, Connecticut 06385 Northeast Nuclear Energy Company ATTN:
Superintendent Millstone Plant Office of Policy & Management Post Office Box 128 ATTN: Under Secretary Energy Waterford, Connecticut 06385 Division 80 Washington Street.
Waterford Public Library Hartford, Connecticut 06115 Rope Ferry Road, Route 156 Waterford, Connecticut 06385 U. S. Environmental Protection Agnecy Region I Office ATTN:
Regional Radiation l.
Representative John F. Kennedy Federal Building Boston, Massachusetts 02203 Northeast Utilities Service Company l
ATTN: Mr. Richard T. Laudenat, Manager l
Generation Facilities Licensing P. O. Box 270 Hartford, Connecticut 06101 e
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SEISMIC CUALIFICATION OF THE AUXILIARY FEEDWATER SYSTEM REQUEST FOR ADDITIONAL INFORMATION Cuestion 1: of Generic Letter 81-14 (GL 81-14) defines the auxiliary feedwater (ATW) system to be considered as:
(a) "The AFW system bouncary from suction to cischarge (incluoing the water source ano heat sink) shall include those portiens of the system required to accomplish the AFW 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 functicn is required."
(b)
"The AFW system beundary shall also include any portion of branch piping that is structurally ccupled to the AFW system boundary such that the seismic response of the branch piping transmits loads to the AFW system. As a minimum, th*.2 includes the branch lines outside the AFW l
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 accition, the structures housing these systems and components shall be included."
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. a Clarify the extent to which your AFW system boundary, consicered in your July 24, 1981 response letter, coincides with the boundary defined in GL 81-14, especially parts (a) and (b) above.
Cuestion 2:
Your response letter stated that the seismic design of the condensate storage tank (CST) and its encicsure along with the system piping ensures that the primary water source will be available following a design basis seismic event or the occurrence of any crecible event involving external phenomenon.
Provide the necessary information to substantiate this statement because the CST is, according to your response letter, presently Non-seismic Category I.
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