ML20054B666
| ML20054B666 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 04/02/1982 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 8204190043 | |
| Download: ML20054B666 (4) | |
Text
h APRIL ~ 2M q u'n P p3%
DISTMBUTION L PDR TERA Docket No. 50-313 NSIC t
ORB #4 Rdg DEisenhut 9
OELD fjr. llilliam Cavanaugh, III AE0D 4
Senior Vice President IE g CEfpfD Energy Supply ACRS-10 A
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- #8 Wag 4PRg IO82A Arkansas Power & Light Company GVissing 1
l P. O. Box 551 RIngram Little Rock, Arkansas 72203 Gray File
- " 85 % # %, er JTBeard
Dear ffr. Cavanaugh:
EBl ackwood H0rnstein y
o lle have reviewed your letter dated August 7,1981 concerning seismic qualification of the emergency feedwater system for Arkansas fluclear One, Unit flo.1 and have determined that we need additional information to complete the review. The enclosed request for additional infomation identifies the infomation required. lie request the information within 30 days from receipt of this letter.
The reporting and/or recordkeeping requirements of this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
Sincerely, 9
/f" A
d y
Jo n F. Stolz, Chief Operating Reactors Cranch #4
(
Division of Licensing l
Enclosure:
Request for Additional Information cc w/ enclosure:
1 See next page i
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NRC FOnu ata (10.a0) NACM 0240 OFFICIAL RECORD COPY usam. im-3sw
f Arkansas Power & Light Company fccw/ enclosure (s):
fir. John R. ' arshall M
Manager, Licensing Arkansas Power & Light Company P. O. Box 551 Director, Bureau of Environmental Little Rock, Arkansas 72203 Health Services 4815 West Markham Street Mr. James P. O'Hanlon Little Rock, Arkansas 72201 General Manager Arkansas Nuclear One P. O. Box 608 Russellville, Arkansas 72801 Mr. William Johnson U.S. Nuclear Regulatory Commission P. O. Box 2090 Russellville, Arkansas 72801 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division Suite 220, 7910 Woodmont Avenue Bethesda, Maryland 20814 Mr. Nicholas S. Reynolds Debevoise & Liberman 1200 17th Street, NU Washington, DC 20036 Arkansas Tech University Russellville, Arkansas 72801 Honorable Ermil Grant Acting County Judge of Pope County Pope County Courthouse Russellville, Arkansas 72801 l
Regional Radiation Representative EPA Region VI l
1201 Elm Street Dallas, Texas 75270 tir. John T. Collins, Regional Administrator
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U. S. Nuclear Regulatory Commission, Region IV 76$1 rling on exas l
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______m._____
Enclosure to ltr. dtd. 4/2/82 REQUEST FOR ADDITIONAL INFORMATION CONCERNING SEISMIC QUALIFICATION OF THE AUXILIARY FEEDWATER SYSTEM FOR ARKANSAS NUCLEAR ONE UNIT 1 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 (including the water source and heat sink) shall incluoe those portions of the system required to accomplish the AFW system function and connecteo branch piping up to and incluaing the second valve which is normally closed or capable of automatic closure when the safety function is required."
(b) "The AFh system boundary shall also incluce 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 incluces 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 addition, the structures housing these systems and components shall be included."
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Clarify the extent to which your AFW system bouncary, consioered in your August 7, 1981 response letter, coincides with the bouncary definec in GL 81-14 Question 2:
Generic letter 61-14, Enclosure 1, Part A states:
"Specify whether your d W system is (a) cesigned, constructed, ano maintained (and incluced within the scoce of seismic related Bulletins 79-02, 79-04, 79-07, 79-14, and 80-11, anc IE Information Notice 80-21), in accoroance with Seismic Category I requirements (e.g., conformance to Regulatory Guides 1.29 and the applicable portions of the Standard Review Plan or comparable criteria) or (b) designed, constructed and maintained (and included within the scoce of seismic related Bulletins 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, i
79-14, and 80-11, anc IE Information Notice 80-21.
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