ML17310A478

Requests That NRC Institute Show Cause Proceeding,Per 10CFR2.202 to Modify,Suspend or Revoke Licensee OLs NPF-41, NPF-51 & NPF-74 Relevant to Pvngs,Per 10CFR2.206

ML17310A478
Person / Time
Site:	Palo Verde
Issue date:	01/04/1993
From:	Saporito T SAPORITO, T.J.
To:	NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO)
References
2.206, NUDOCS 9308040223
Download: ML17310A478 (4)

Text

ACCEI ERAT D DOCUMENT DIST SUTION SYSTEM i~ REGULA Y"INFORMATION DISTRIBUTIO YSTEM (RIDS) "

ACCESSION NBR:9308040223- DOC.DATE: .93/Ol/04 NOTARIZED: NO DOCKET g FACIL:BTN-50-528 Palo Verde Nuclear Station, Unit 1, Arizona Publi 05000528 STN-50-529 Palo Verde Nuclear Station, Unit 2, Arizona Publi 05000529 STN-50-530 Palo Verde Nuclear Station, Unit 3, Arizona Publi 05000530 AUTH. NAME AUTHOR AFFILIATION SAPORITO,T.J. Affiliation Not Assigned RECIP.NAME -

RECIPIENT AFFILIATION Ofc of the Executive Director for Operations

SUBJECT:

Requests that NRC institute show cause proceeding,per 10CFR2.202 to modify, suspend or revoke licensee OLs NPF-41, NPF-51 6 NPF-74 relevant to PVNGS,per 10CFR2.206.

DISTRIBUTION CODE: AOOID TITLE: OR COPIES RECEIVED:LTR Submittal: General Distribution

~ ENCL g BISE: B.

NOTES:STANDARDIZED PLANT 05000528 A Standardized plant. 05000529 Standardized plant'. 05000530 RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PDV LA 1 1 PDV PD 1 1 TRAMMELLP C 2 TRAN I L 2 2 INTERNAL: ACRS 6 6 NRR/DE/EELB 1 1 NRR/DRCH/HICB 1 NRR/DRPW/OTSB 1 1 NRR/DSSA/SPLB 1 1 NRR/DSSA/SRXB 1 1 NUDOCS-ABSTRACT 1 1 OC LFDCB 1 0 OGC/HDS1 1 0 YL Ol 1 1 EXTERNAL: NRC PDR 1 1 NSIC A

NOTE TO ALL"RIDS" RECIPIENTS PLEASE HELP US TO REDUCE WASTEl CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 23 ENCL 21

THOMAS J. SAPORITO, JR.

7881 Piper Lane Lake Worth, FL 33463 407/641-6190 407/642-4245 January 4, 1993 Executive Director for Operations U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Re: ARIZONA PUBUC SERVICE COMPANY, PALO VERDE NUCLEAR STATION License Nos. NPF-41, 51 5 74 Docket Nos. 50-528, 529 5 530

Dear Sir:

Pursuant to 10 C.F.R. 5 2.206, Thomas J. Saporito, Jr., ("Petitioner" ), requests specific actions by the U.S. Nuclear Regulatory Commission (NRC) within a reasonable time directed towards the Commission licensee the Arizona Public Service Company (Licensee) operator of the Palo Verde Nuclear Generating Station located near Phoenix, Arizona.

A. Petitioner requests that the NRC institute a show:cause proceeding pursuant to 10 C.F.R. 5 2.202 to modify, suspend, or revoke the Licensee's operational licenses NPF-41, 51 5 74 relevant to the Palo Verde Nuclear Generating Station.

B. Petitioner requests that the NRC take appropriate actions to cause the 'immediate shut down of the (3) three reactor cores at the Palo Verde Nuclear Generating Station.

C. Petitioner requests that the NRC take appropriate enforcement action against the Licensee.

D. Petitioner requests that the NRC deny the Licensee's November 13, 1990 request to th NRC for an Amendment to the Palo Verde Nuclear Generating Station Units 1, 2, and Technical Specifications Sections 3/4.3.1, 3/4.4.2, 3/4.7.1, and 3/4.7,1.2.

Basis and Justification:

1. The licensee has not established a need for the Technical Specification changes; that he has not shown that the proposed changes, if adopted, could be met; that the analytic model for the pressurizer safety valve ls flawed; and that the main steam safety valve tolerance as proposed will produce an average setpolnt which is not+3 percent but +6.4 percent above the design pressure of the main steam system. See Exhibit 1: NRC December 4 1991 memorandum for Robert C. Jones Chief Reactor S stems Branch from Jack E. Rosenthal, Chief Reactor 0 erations Anal is Branch.

2. Three out of four of the Unit 3 Pressurizer Safety Valves tested off-site were found to have setpoints outside the allowable range. The setpoint drift was documented in the licensee's Root Cause of Failure (RCF) EER 91-RC-052 and PRS 1917. See Exhibit 2:

9308040223 930i04',

PDR ADQCK 05000MS PDR,

Ucensee Corres ndence I.D.¹320-00102-MSC dated June 5, 1991 from M.S. Co k to B.S. Ecklund.

3. The request to amend the setpoint tolerances for the Main Steam Safety Valves and the Pressurizer Safety Valves would allow only a 9.1 psia margin between the safety limit of 2750 psia and the peak pressure of 2740.9 psia. See Exhibit 3: Ucensee Corres ondence I.D.¹054-01205-GSG dated March 6 1991 from Geor e Green to Valves.

4. The licensee's Unit 1 sustained an out of tolerance condition on (14) fourteen of the (20) twenty Main Steam Safety Valves and an out of tolerance condition on (2) two of the (4) four Pressurizer Safety Valves in the first quarter of 1992. During disassembly of the Pressurizer Safety Valves, various valves were found with their blowdown rings out of their required position. The actual experience with safety valves in nuclear applications is that frequently they neither lift at the required setpoint nor reseat tightly without leaking. The variation of the setpoint from the requirements often exceed not only the x1 percent tolerance but also the *3 percent tolerance. See Exhibit 5: Licensee's Condition Re rt/Dis osltion R uest CRDR No. 1-2-0139

5. The manufacturer of the licensee's safety valves (Dresser) warrants their safety valves for operation at only *3 percent of setpoint and not the a1 percent of setpoint required by the licensee's Technical Specifications. The safety valve regardless of its manufacturer or its application experiences setpoint drift which is not within the tolerance of a1 percent required Technical Specifications or the a3 percent warranted by the valve vendors. See Exhibit 6: In Part NRC S lal Stud Safe and Safe /Relief Valve Reliabili dated A ril 1992 and Pre ared b M S. We ner, Reactor 0 erations Anal is Branch Office for Anal is and Evaluation of 0 rational Data.

WHEREFORE, the above stated reasons, the licensee cannot demonstrate to the NRC reasonable assurance for the continued safe operation of the Palo Verde Nuclear Generating Station. Accordingly, it is appropriate for the NRC to consider. this Petition pursuant to 10 C.F.R. 5 2.206 wherein the petitioner has set forth the facts that constitute the basis for the request. See Philadel hia Electric Com an Umerick Generatin Station, For the Environment, Petitioner pro se Thomas J. apor, Jr.

CC: The Honorable John Dingell Harold Fossett, NRC I.G.

John Martin, Adm. NRC RV Philup Joukoff, O.l. NRC RV Oscar DeMiranda, SAC NRC Rll Mary S. Wegner, NRC AEOD David K. Colapinto, Esq.

EXHIBIT NO. I