ML20052H379
| ML20052H379 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 05/07/1982 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| References | |
| GL-81-14, TAC-43663, NUDOCS 8205200300 | |
| Download: ML20052H379 (5) | |
Text
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('Tiocket Filed NRC PDR L PDR ORB #4 Rdg DEisenhut Docket flo. 50-312 OELD AE00 m
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4 ACRS-10 Mr. J. J. Mattimoe MPadovan
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Assistant General Manager and RIngram RECEIVED Chief Engineer Gray File 97 gy y 3 982# #g Sacramento t!unicipal Utility EBlackwood umI/Ejyy txx 2$
District H0rnstein 6201 S Street JTBeard c,
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P. O. Box 15830 Sacramento, California 95813 4
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Dear Mr. Mattimoe:
SU3 JECT: SEIS!!IC QUALIFICATION OF THE AUXILIARY FEEDWATER SYSTEM -
REQUEST FOR ADDITIONAL IliFORMATIO!!
Generic Letter No. 81-14. " Seismic Qualification of Auxiliary Feedwater Systems," requested information about the Rancho Seco Auxiliary Feedwater System (ARIS) seismic design. The purpose of this infom-ation was to determine the extent your APdS was seismically qualified.
We have reviewed your July 17, 1981 and October 14, 1981 cubmittals and find that additional clarification will be required in order for us to complete our review. Within 30 days of receipt of this letter, please provide the information requested in the enclosure to this letter.
The reporting requirements contained in this letter affect fewer than ten respondents, thus OMB clearance is not required under P.L.96-511.
Sincerely,
.: a John F. Stolz','
ie7 Operating Reactors Branch #4 Division of Licensing
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page 8205200300 820507 DR ADOCK 05000
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.., o TC FORM 318 (1040) NRCM 0240 OFF1CIAL RECORD COPY usceo: mi-m mo
,F Sacra:nento Municipal Utility Rancho Seco, Docket No. 50-312 District ccw/ enclosure (s):
' David S. Kaplan, Secretary and Christopher Ellison, Esq.
General Counsel Dian Grueufch, Esq.
Sacramento Itunicipal Utility California Energy Comission District 1111 Howe Avenue 6201 S Street Sacramento, California 95825 P. O. Box 15830 Sacramento, California 95813 Ms. Eleanor Schwartz California State Office 600 Pennsylvania Avenue, S.E., Rm. 201 Sacramento County Board of Supervisors Washington, D. C.
20003 827 7th Street, Room 424 Sacramento irnia 95814 Docketing and Service Section Office of the Secretary Business anu riunicipal Department U.S. Nuclear Regulatory Comission Sacramento City-County Library Washington, D. C.
20555 828 I Street Resident Inspcctor/ Rancho Seco Sacramento, California 95814 c/o U. S. N. R. C.
14410 Twin Cities Road Herald, CA 95638 Dr. Rir.hard F. Cole Atomic Safety & Licensing Board Panel U.S. Nuclear Regulatory Commission Washington, D. C.
20555
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Regional Radiation f.epresentative EPA Reaion IX Mr. Frederick J. Shon 215 Fremont Street Atomic Safety and Licensing Board San Francisco, California 94111 Panel U.S. Nuclear Regulatory Commission Mr. Robert B. Borsum Washington, D. C.
20555 Babcock & Wilcox Nuclear Power Generation Division Elizabeth S. Bowers, Esq.
Suite 220, 7910 Woodmont Avenue Chairman, Atomic Safety and Bethesda, Maryland 20814 Licensing Board Panel U.S. Nuclear Regulatory Commission Thomas Baxter, Esq.
Washington, D. C.
20555 Shaw, Pittman, Potts & Trowbridge 1800 M Street, N.W.
Washington, D. C.
20036 Herbert H. Brown, Esq.
Lawrence Coe Lanpher, Esq.
Hill, Christopher and Phillips, P.C.
1900 M Street, N.W.
Atomic Safety ard Licensing Board Washington, D. C.
20036 Panel U.S. Nuclear Regulatory Comission Helen Hubbard Washington, D. C.
20555 P. O. Box 63 Sunol, California 94586
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IP Sacramento Municipal Utility District Atomic Safety and Licensing Appeal Mr. Robert H. Engelken, Regional Administrator U. S. Nuclear Regulatory Commission, Region V Board Panel 1990 N. California Boulevard, Suice 202 U.S. Nuclear Regulatory Commission Walnut Creek, California 94596 Washington, D. C.
20555 Alan S. Rosenthal, Chairran Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Connission Washington, D. C.
20555 Dr. John H. Buck Atonic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Conmission Washington, D. C.
20555 Christine 'i. Kohl Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 California Department of Health ATTN: Chief. Environmental Radiation Control Unit Radiological Health Section 714 P Street, Room 498 Sacramento, California 95814 e-
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Enclosure to ltr. dtd. 5/7/82 4
Rancho Seco Nuclear Plant Unit 1 SEISMIC QUALIFICATICN OF THE AUXILIARY FEECWATER SYSTEM REQUEST FOR ADDITIONAL INFORMATION of Generic Letter 81-14 (GL 81-14) defines the auxiliary feeowater (AFW) system to be considered as:
(a) "The AFW system boundary from suction to cischarge (including the water source and heat sink) shall include those portions of the system required to accomplish the AFW system function and connected branch piping up to ano 1
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."
(c) "In addition, the structures housing these systems and components shall be included."
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i QUESTION:
Clarify the extent to which your AFW system boundary, considered in your response letters dated July 17, 1981 and October 14, 1981, coincides with the boundary defined in GL 81-14, especially parts (a), (b), and (c) above.
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