ML17298A218
| ML17298A218 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 01/31/1983 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17298A219 | List: |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.D.1, TASK-TM ANPP-22867-WFQ, NUDOCS 8303070058 | |
| Download: ML17298A218 (8) | |
Text
REOULATOfOINFORMATION DISTRIBUTION TEM (RIOR)
I A'CCATSSION NBR 8303070058 DOC's DATE ~ 83/0 1/3 1 NOTARIZED Y'ES DOCKET FACIL:STN 50-. 528 Palo Verde.,Nuclear StationR Uni;t il Arizona"Publi'5000528
'STN 50 529 Palo Verde Nuclear Station~
Uni,t 2r Arizona Publi 05000529 STN 50;530 Palo Verde Nuclear "Station<
Uniit 3i Arizona Publi 05000530
'AUTH,NAME AUTHOR AFFILIATION VAN BRUNT p E E ~
Ari zona Pub 1'i c Serv i ce 'Co ~
<<RECIP ~ NAME RECIPIENT AFFILIATION KNIGHTONEG N Licensing Br anch 3
SUBJECT:
Forwards "Pressurizer Safety Valve.Discharge Piping Evaluation Rept',"
as final response to NUREG 0737'tem 2D 1'NRept preaents pl ant-speci fi c appl ication of C-E generic program.
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Arizona Public Service Company P.O. BOX 21666
~
PHOENIX, ARIZONA 65036 January 31, 1983 ANPP-22867 WFQ/KEJ I
Director of Nuclear Reactor Regulation Attention:
Mr. G. Knighton, Chief Licensing Branch No.
3 Division of Licensing U.
S. Nuclear Regulatory Commission Washington, D. C.
20555
Subject:
Palo Verde Nuclear Generating Station (PVNGS) Docket Nos.
STN-50-528/529/530 File:
83-056-026'.1.01.10
References:
1.
Letter from E.
E.
Van Brunt, Jr.,
APS to R. L. Tedesco, NRC dated June 29, 1982 2.
Letter from R.
W. Wells, Chairman, CE Owners Group, to Harold Bernard, NRC dated December 20, 1982.
Subject:
Transmittal of CEN-227, Summary Report on the operability of Pressurizer Safety Valves in CE designed Plant
Dear Mr. Knighton:
The purpose of this letter is to provide you with Arizona Public Service Company's final response to the requirements of item II.D.1 of NUREG-0737 concerning the PWR Safety and Relief Valve Test Program.
The reference (1) letter described how APS participated in the CE Owners Group program that was initiated to evaluate the EPRI test results and apply those results to the utilities operating and constructing Combustion Engineering (CE) designed plants.
The CE Owners Group program was initiated in April, 1982, and com-pleted in December, 1982.
The approach that was applied by the CE Owners Group was to show that particular EPRI test were directly representative of plant-specific safety valve models and valve installations, and that acceptable valve operation
. was demonstrated.
Accordingly, CE report CEN-227, entitled, "Summary Report on the Operability of Pressurizer Safety Valves in CE Designed Plants",
was forwarded to the NRC by Mr. R.
W. Wells, Chairman of the CE Owners Group by Reference (2).
Arizona Public Service Company considers CEN-227 to provide the required information on safety valve operability for PVNGS.
CEN-227 provides two combinations of safety valve adjusting ring settings for PVNGS, demonstrated by the EPRI Test results, that result in satisfactory operation.
The ring settings described in CEN-227 for PVNGS with Dresser 31709NA safety valves are (-48, -20, 0) and (-48, -60, 0).
The ring settings used for the pressurizer safety valves at PVNGS are (-48, -60, 0).
- Thus, APS concludes that the present ring settings will result in satisfactory safety valve operability.
This satisfies Arizona Public Service Company's responsibility to demonstrate safety valve operability in response to item II.D.1 of NUREG-0737.
8303070058 SSOl3l PDR ADOCK 05000528 I
I A
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Hr.
G. Knighton January 31, 1983 ANPP-22867 WFO/KEJ Page 2
Combustion Engineering performed an evaluation of the PVNGS safety valve discharge piping and support system for structural adequacy during safety valve actuation.
The hydraulic piping forces generated upon valve actua-tion were calculated by the RELAP5 computer code, which was benchmarked for this application in the EPRI Safety and Relief Valve Test Program.
These hydraulic forces were applied as input loadings to a dynamic struc-tural analysis of the discharge piping system.
The results of this analysis indicates that the feedback effects of the piping system will not adversely affect valve performance.
The calculated piping imposed loading on the safety valves are below those 1'oadings tested in the EPRI program and under which the valves operated satisfactorily.
Attached is at copy of the PVNGS Pressurizer Safety Valve Discharge Piping Evaluation Report prepared by Combustion Engineering.
Based on the results of this evaluation it is concluded that the PVNGS Safety Valve 'piping and supports are adequate for the presently calculated hydraulic loads.
This satisfies Arizona Public Service Company's responsibility to demonstrate adequacy of the PVNGS Safety Valve Piping and Supports.
If you have any questions concerning this matter, please contact me.
Very truly yours E.
E. Van Brunt, Jr.
APS Vice President, Nuclear Projects ANPP Project Director EEVBJr/KEJ/sp Attachment cc:
E. Licitra (w/a)
L. Bernabei P. Hourihan K. Berlin A. C.
Gehr
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January 31, 1983 ANPP-22867 0JFQ/KEJ STATE OF ARTZONA
)
) ss.
COUNTY OF MARXCOPA)
I, Edwin E. Van Brunt, Jr., represent that I am Vice President Nuclear Projects of Arizona Public Service, Company, that the -foregoing document has been signed by me on behalf of Arizona Public Service Company with full authority so to do, that I have read such document and know its contents, and that to the best of my knowledge and belief, the statements made therein are true.
Edwin E. Van Brunt, Jr.
, 1983.
My Commission expires:
My Cemmisslen Expires May 19, 1986 Sworn to before me this ~g day Tc w ~o w Notary Public
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