ML17298C087

Forwards Draft Change to FSAR Table 6.2.1-3,revising Pressurizer Compartment Design Wall Loading from 54 Psid to 73 Psid.Revised Value Evaluated & Acceptable.Design Criteria of FSAR Section 3.8 Confirmed

ML17298C087
Person / Time
Site:	Palo Verde
Issue date:	04/25/1985
From:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Knighton G Office of Nuclear Reactor Regulation
References
ANPP-32497-EEVB, NUDOCS 8504290381
Download: ML17298C087 (10)

Text

I REGULATOR'l NFORMATION DISTRIBUTION TEM (RIDS) r NOTARIZED' ACCESSION NBR:8504290381 DOC ~ DATEe 85/04/25 , YES DOCKE(T~ 0 FACIL:STN,50 528 Palo Ve'rde Nuclear Stations Unjt 1~ Arizona Publi 05000528 STN 50-529 Palo Verde, Nuclear Station~ Unit 2< Ar)zona Publi 0500052$

BYNAME STN 50 530 Palo Verde Nuclear Stationi Unit 3p Arizona Publi 05000530 AUTH AUTHOR AFF ILI ATION VAN BRUNTiE'.ED Arizona Public Service Co.

RECIP ~ NAME RECIPIENT AFFILIATION KNI'GHTONg G ~ N ~ Licensing Branch 3

SUBJECT:

Forwards draft" change to FSAR Table. 6",2;1 3grevising, pressurizer compartment design wall loading fromm 54 psid .to 73 psid.Revised value evaluated 8, acceptable. Design crite'ria of FSAR Section 3 ' confirmed, DISTRIBUTI N CODE ~ AQQ 1D COPIES 'ECEIVED jLTR ENCL SIZE ~

TITLE! OR Submittali General Distribution NOTES!Standardized plant ~ 05000528 OL: 12/31/84 Standardized plant. 05000529-Standardized plant ~ 05000530 RECIPIENT COPIES RECIPIENT ,COP-IES'T'TR ID CODE/NAME> LTTR ENCL ID CODE/NAME ENCL~

NRR LB3 BC 01- 7 7 INTERNAL: ACRS 09<< 6 6 ADM/LFMB 1- 0 ELD/HDS3 1 0 NRR/DE/MTEB 1 NRR/DL D IR 1 1 NRR/DL/ORAB 1 0 NRR/DL/TSRG. 1. 1 N TB 1 1 NRR/DS I'/RAB 1 ~ 1 G FI E 04 1 1 RGN5 1 1 EXTERNAL: EG&G BRUSKE" S 1>> 1 LPDR Q3 1 f~

NRC PDR 02 1 1 NSIC 05 1 1 TOTAL NUMBER'F COPIES REQUIRED: LTTR 27 ENCL" 24

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Arizona Nuclear Power Project P.o. BOX 52034 4 PHOENIX, ARIZONA85072-2034 Director of Nuclear Reactor Regulation ANPP-32497-EEVB/TFQ Mr. George W. Knighton, Chief April 25, 1985 Licensing Branch No. 3 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Subject:

Palo Verde Nuclear Generation Station (PVNGS)

Units 1, 2, and 3 Docket Nos. STN 50-528(License No. NPF-34)/529/530 Pressurizer Compartment Design Mall Loading File: 85-056-026 G.1.01.10

References:

(1) Letter from E. E. Van Brunt, Jr., ANPP, to G. W. Knighton, NRC, dated December 10, 1984 (ANPP-31395).

Subject:

PVNGS FSAR Update.

(2) Telecon with the NRC Staff on April 10, 1985.

Subject:

Pressurizer Compartment Design Wall Loading Re-Analysis.

Dear Mr. Knighton:

Enclosed for your information is a draft FSAR change to FSAR Table 6.2.1-3.

This FSAR change has been discussed with the NRC Staff during the Reference (2) telecon. FSAR Table 6.2.1-3 is being revised to change the Pressurizer compartment design wall loading from 54 psid to 73 psid. This revised value has been analyzed and found to be acceptable.

n The revision to Table 6.2.1-'3 was made for the following reasons. Reference

('1) submitted changes to the FSAR whi'ch included a change to the pressurizer compartment peak pressure (refer to FSAR Table 6.2.1-2). This change was prompted by modifications to the pressurizer compartment which provided for forced air circulation in the pressurizer compartment. This reduced the vent area available for relieving steam and water to the containment building in the event of a pipe rupture inside the compartment. The analysis resulted in a calculated pressurizer compartment peak differential pressure of 72.4 psid. However, the pressurizer compartment design wall loading, presented in FSAR Table 6.2.1-3, was not updated to reflect this change.

The revised value of 73 psid has been evaluated and has been found to be acceptable. Additionally, this analysis conforms with the design criteria of FSAR Section 3.8.

8504290381 850425 PDR ADOCK I

P 05000528 PDR

t Mr. George W. Knighton, Chief Pressurizer Compartment Design Wall Loading ANPP-32497 Page 2.

If you have any questions on this matter, please contact Mr. W. F. Quinn of my staff.

Very truly your E. E. Van CLt~

Brunt, Jr.

n ~

Executive Vice President Project Director EEVB/TFQ/das cc: E. A. Licitra (all w/a)

A. C. Gehr R. P. Zimmerman

STATE OF ARIZONA )

) ss.

COUNTY OF MARICOPA)

I, Edwin E. Van Brunt, Jr., represent that I am Executive Vice President, Arizona Nuclear Power Project, that the foregoing document has been signed by me on behalf of Arizona Public Service Company with full authority to do so, 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.

Sworn to before me this ~ day of , 1985. p CP 7 Notary Public My Commission Expires:

,i,p, My Commission Expires Nov. 12, 19A8

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PVNGS FSAR CONTAINMENT SYSTEMS Table 6.2.1-3 PRINCIPAL CONTAINMENT DESIGN PARAMETERS Parameter Peak Value Containment Internal design pressure, psig 60.0 Design temperature, F High mean during normal operation 120.0 Maximum, DBA 300.0 External design pressure loading, psig 4.0 Net free volume, ft 2.6 x 10-Design leak rate, percent free volume 0.1 per day at 60.0 psig Subcompartments Reactor cavity design wall loading, 110~a~

psst.d Steam generator compartment design wall 30(a) loading, psid Pressurizer compartment design wall loading, psid

a. This value does not include the dynamic load fac-tors which were used in the design as described in section 3.8.3.3.l.4.

Amendment 5 6.2.1-6 August 1981

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