ML19326C399
| ML19326C399 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 02/22/1978 |
| From: | David Williams ARKANSAS POWER & LIGHT CO. |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| 1-028-7, 1-28-7, NUDOCS 8004220945 | |
| Download: ML19326C399 (2) | |
Text
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e REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
DISTRIBUTION FOR INCOMING MATERIAL 50-313 REC: STELLO V ORG: WILLIAMS D H DOCDATE: 02/22/78 NRC AR PWR & LIGHT DATE RCVD: 02/27/78 DOCTYPE: LETTER NOTARIZED: NO COPIES RECEIVED
SUBJECT:
LTR 1 ENCL 0 RESPONSE TO NRC"S LTR DTD 02/02/78.
FURNISHING INFO CONCERNING THE REACTOR CAVITY ANNULUS SEAL RING AND BIOLOGICAL SHIELDING.
PLANT NAME: ARKANSAS - UNIT 1 REVIEWER INITIAL:
XJM DISTRIBUTOR INITIAL:
00***************
DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS ******************
GENERAL DISTRIBUTION FOR AFTER ISSUANCE OF OPERATING LICEN3E.
(DISTRIBUTION CODE A001)
FOR ACTION:
BR CHIEF R
'"LTP 7)
INTERNAL:
G FILE **LTR ONLY(1)
NRC PDR**LTR ONLY(1) 4.t Q ONLY(2)
OELD**LTR ONLY(1)
I u HANAUER**LTK UNLY(1)
CHECK **LTR ONLY(1)
EISENHUT**LTR ONLY(1)
SHAO**LTR ONLY(1)
BAER**LTR ONLY(1)
BUTLER **LTR ONLY(1)
GRIMES **LTR ONLY(1)
J COLLINS **LTR ONLY(1)
J.
MCGOUGH**LTR ONLY(1)
EXTERNAL:
LPDR'S RUSSELLVILLE, AR**LTR ONLY(1)
TIC **LTR ONLY(1)
NSIC**LTR ONLY(1)
DISTRIEUTION:
LTR 40 ENCL 0 CONTROL NBR:
SIZE: 1P o*o********************************
THE END
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ARK ANS AS POWER & LIGHT COMPANY RO. sox 551 UTTLE AOCK A AK AN. AS 72203. t5011371 -4000 February 22, 1978 N
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3%,' d/ggh Director of Nuclear Reactor Regulation
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ATTN:
Mr. Victor Stello, Director Division of Operating Reactors
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U. S. Nuclear Regulatory Commission
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Washington, D. C.
20555
Subject:
Arkansas Power 6 Light Company Arkansas Nuclear One-Unit 1 Docket No. 50-313 License No. DPR-51 Reactor Cavity Annulus Seal Ring and Biological Shielding (File:
1510, 1160)
Gentlemen:
By letter dated February 2, 1978, we were requested to supply within 20 days certain information concerning the above captioned subject as it pertained to Arkansas Nuclear One-Unit 1 (ANO-1). This response contains th,at requested information.
During no'rmal operation, the cavity annulus seal ring is lifted approximately three (3) feet above the refueling canal floor and the biological shielding is installed in the reactor cavity annulus. The concrete biological shielding blocks were designed to withstand vertical pressures of 250 psi and are therefore compatible with predicted LOCA pressures in the reactor cavity (ANO-1 FSAR Section 5.2.1).
An analysis is currently being performed to determine what effects the indirect reactor cavity pressure:: would have on the suspended seal ring. We expect to be able to provide you with the information by March 3,1978.
Since ANO-1 is presently shut down for refueling, we offer no justification to support continued operation at this time. We will provide the required justification, if necessary, concurrent with our next submittal.
Very,truly yours, l
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O Daniel H. Williams AO Manager, Licensing
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