ML102510187

Revised Commitment Date to Drain the Spray Chemical Addition Tanks, and License Renewal Application Amendment No. 23

ML102510187
Person / Time
Site:	Palo Verde
Issue date:	08/27/2010
From:	Hesser J Arizona Public Service Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
102-06243-JHH/AKK/GAM
Download: ML102510187 (4)

Text

L A M ~

A subsidiary of Pinnacle West Capital Corporation John H. Hesser Mail Station 7605 Palo Verde Nuclear Vice President Tel: 623-393-5553 PO Box 52034 Generating Station Nuclear Engineering Fax: 623-393-6077 Phoenix, Arizona 85072-2034 102-06243-J H H/AKK/GAM August 27, 2010 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2, and 3 Docket Nos. STN 50-528, 50-529 and 50-530 Revised Commitment Date to Drain the Spray Chemical Addition Tanks, and License Renewal Application Amendment No. 23 By letter no. 102-06162, dated April 2, 2010, Arizona Public Service Company (APS) submitted a commitment to ensure that the abandoned containment spray chemical addition tanks (SCATs) and associated piping components in PVNGS Units 1, 2, and 3 are drained to preclude any spatial interactions with safety-related components by August 30, 2010 (Commitment No. 54). The residual fluid in these abandoned components includes dilute hydrazine, a toxic chemical. Careful planning and preparations have been made to safely accomplish the draining, which has taken more time than originally anticipated.

In order to accommodate the safe draining of the SCATs and associated piping components, APS plans to complete the draining by November 30, 2010. Therefore, the PVNGS License Renewal Application (LRA) Commitment No. 54 is being updated, as shown in LRA Amendment No. 23 in Enclosure 1, as follows:

By November 30, 2010, APS will ensure that the abandoned containment spray chemical addition tanks and associated piping components in PVNGS Units 1, 2, and 3 are drained to preclude any spatial interactions with safety related components.

This commitment is associated with Confirmatory Item 2.1.4.2-1 in the NRC Safety Evaluation Report (SER) with Open Items Related to License Renewal of Palo Verde Nuclear Generating Station, Units 1, 2, and 3, issued on August 6, 2010. The Confirmatory Item states the following:

A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

• Comanche Peak

• Diablo Canyon

• Palo Verde - San Onofre

• South Texas

• Wolf Creek

ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Revised Commitment Date to Drain the Spray Chemical Addition and License Renewal Application Amendment No. 23 Page 2 SER Section 2.1.4.2 Application of the Scoping Criteria in 10 CFR 54.4(a)(2)

During the scoping and screening methodology audit, performed on-site October 19 - 22, 2009, the staff determined that the nonsafety-related, abandoned containment spray chemical addition tanks in Units I and 3 had not been included in the scope of license renewal. The associated piping was cut and capped for these tanks, but they had not been verified to be dry. The tanks were found to contain liquid and thus are in the scope of license renewal under 10 CFR 54.4(a)(2). The applicant responded to the RAI by providing a commitment to drain the tanks by August 30, 2010, which is before issuance of the final SER.

The schedule provided on the NRC reactor license renewal Web site for the Palo Verde license renewal application review shows that the final SER is scheduled to be issued on December 17, 2010. This updated commitment to drain the tanks by November 30, 2010, continues to be before issuance of the final SER.

I declare under penalty of perjury that the foregoing is true and correct.

Executed on 7112/7 /zh)

(date)

JHH/RAS/GAM

Enclosure:

Palo Verde Nuclear Generating Station License Renewal Application Amendment No. 23 cc:

E. E. Collins Jr.

J. R. Hall L. K. Gibson J. H. Bashore L. M. Regner G. A. Pick NRC Region IV Regional Administrator NRC NRR Senior Project Manager NRC NRR Project Manager NRC Senior Resident Inspector (acting) for PVNGS NRC License Renewal Project Manager NRC Region IV (electronic)

ENCLOSURE 1 Palo Verde Nuclear Generating Station License Renewal Application Amendment No. 23 LRA Section Affected Page RAI No.

Nos.

Table A4-1, Item No. 54 A-59 na

Palo Verde Nuclear Generating Station License Renewal Application Amendment No. 23 LRA Table A4-1, License Renewal Commitments (page A-59), is revised as follows (new text underlined):

Item Commitment LRA Section Ilmplementation

-No.

Schedule~

54 By August 30 November 30, 2010, APS will ensure ReSPO-4 0 11/30/10 that that the abandoned containment spray chemical RAI -2*n-3, addition tanks and associated piping components in issue-(2-),

PVNGS Units 1, 2, and 3 are drained to preclude APS letter any spatial interactions with safety related no. 102-components.

06146206243, (RCTSAI 3443855) dated 42/L10 8/27/10