ML20093D315

Forwards Supplemental Info to Re Operability of Valves VQ2A,VQ3B,VQ15B & VQ16A,in Response to Proposed License Condition 18, Containment Purge Valve Operability

ML20093D315
Person / Time
Site:	Catawba
Issue date:	10/09/1984
From:	Tucker H DUKE POWER CO.
To:	Adensam E, Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML20093D318	List: ML20093D315 ML20093D335 ML20093D349 ML20093D360 ML20093D381 ML20093D406 ML20093D418 ML20093D448
References
NUDOCS 8410110200
Download: ML20093D315 (3)

Text

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g. POWER GOMPANY P.O. BOX 33180 c

CHARLOTTE, N.G. 28242 -

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_~HAL B. TUCKER retzessown 3-i - w,e eme==== r .

. . , '- . (704)373-453:

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' 5Mr. Harold lR..Denton', Director.

. Office of Nuclear: Reactor Regulation -

U. S. Nuclear.-Regulatory. Commission-

, Washington,.D. C.- 120555

Attention: -Ms. E. G. Ade'nsam, Chief-sLicensing' Branch No. 4

.Re: Catawba Nuclear Station

. Docket Nos. 50-413 and 50-414

1. E

Dear Mr. Denton:

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In respons'eito Proposed License Condition 18, Containment Purge Valve

0perability, my letter of September 5,1984 provided information to *

. demonstrate the operability of valves VQ2A, VQ3B, VQ15B and VQ16A. The following information.is provided to supplement the previous submittal.

As noted;in'.the September 5,1984 submittal, all four valves were supplied with'Rotork; electric. motor. operators set at 45 ft-lbs of' output torque.

This -torque is.'more than adequate' to assure valve closure against accident .

1 -pressures. It is _ estimated that 4 ft-lbs f of; torque would be required to (operate the. val.ves VQ2A-and VQ16A against an accident pressure of 15 psig tand to overcome' stem or packing loads and 14 ft-lbs:of. torque for valves VQ3B' and'VQ15B to operate under the same conditions. lThe valve manufacturers

'have confirmed that the-45 ft-lbs output. torque of the electric' motor operator would notadamage the-. valves nor inhibit the valves from performing .

their intended function. r

- 'To' assisti tihe Staff in their review of the qualification of these valves copies of-the valve specification, seismic report, frequency report and ,

the static deflection-test results for valve items 5B-473 and 28-400.are attached Five-identical-valves are included in item 5B-473, two of the valves are VQ2A and-VQ16A....-Ten identical valves are included'in 2B-400, two of these

._J y valves are VQ3B and VQ15B.

[ .Very truly yours,.

.lhN/ Hal B. Tucker

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f, i ;ROS: sib. p, Attachment 8410110200 841011 - dg PDR ADOCK 05000413 l P PDR

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? M r.' Harold R. Denton, Director Page Two cc: (w/o attachment)

Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear. Regulatory-Commission Region.II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 NRC Resident Inspector Catawba Nuclear Station Mr.; Robert Guild, Esq.

' Attorney-at-Law P. D. Box 12097-Charleston,1 South Carolina 29412

_ Palmetto Alliance

'-' 21351 Devine Street

. Columbia, South Carolina 29205 Mr. Jesse L. Riley -

Carolina Environmental Study Group

-854_Henley Place Charlotte, North Carolina 28207 r

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Attachment 1 Specification for Valves VQ2A and VQ16A

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