ML20093D315
| 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: |
| 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 3-
. (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
- E
Dear Mr. Denton:
^
- 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 valves are VQ3B and VQ15B.
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.Very truly yours,.
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f, Hal B. Tucker
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Attachment 8410110200 841011 dg PDR ADOCK 05000413 l
P PDR
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? r.' Harold R. Denton, Director M
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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Specification for Valves VQ2A and VQ16A
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