ML14204A044

License Renewal Commitment No. 17 Related to Reactor Vessel Surveillance Capsule Removal Schedule

ML14204A044
Person / Time
Site:	Palo Verde
Issue date:	07/18/2014
From:	Mims D Arizona Public Service Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
102-06864-DCM/TNW
Download: ML14204A044 (2)

Text

k 10 CFR 50, Appendix H kaps DWIGHT C. MIMS Senior Vice President, Nuclear Regulatory & Oversight Palo Verde Nuclear Generating Station 102-06864-DCM/TNW P.O. Box 52034 July 18, 2014 Phoenix, AZ 85072 Mail Station 7605 Tel 623 393 5403 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

References:

1. APS Letter No. 102-06447, Request for Approval of Proposed Changes to the Reactor Pressure Vessel Surveillance Capsule Withdrawal Schedules, dated December 9, 2011

2. NRC Letter, Palo Verde Nuclear Generating Station, Units 1, 2, and 3 - Request For Approval Of Proposed Changes To The Reactor Pressure Vessel Surveillance Capsule Withdrawal Schedules (ADAMS Accession No. ML120540973), dated April 9, 2012

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Units 1, 2, and 3 Docket Nos. STN 50-528, 50-529, and 50-530 License Renewal Commitment No. 17 Related to Reactor Vessel Surveillance Capsule Removal Schedule The purpose of this letter is to inform the NRC that Arizona Public Service Company (APS) has revised license renewal commitment number 17, related to submittal of revised reactor vessel surveillance capsule removal schedules.

APS requested changes to the reactor vessel surveillance capsule schedules in Reference 1. The NRC staff reviewed and approved the revised schedules in Reference 2. The element of license renewal commitment 17 to revise the schedules to withdraw the next capsules at the equivalent clad-base metal exposure of approximately 54 effective full power years (EFPY) (39 to 42 actual operating EFPY), for the 60-year period of operation has, therefore, been completed. License renewal commitment number 17 has been revised deleting the completed element of the commitment.

This commitment change also clarifies that proposed reactor vessel surveillance capsule withdrawal schedules, needed for a possible 80-year operating period, would be submitted to the NRC prior to 50 EFPY, as opposed to prior to the first period of extended operation.

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

• Comanche Peak

• Diablo Canyon

• Palo Verde

• Wolf Creek t\A~

ATTN: Document Control Desk U.S. Nuclear Regulatory Commission License Renewal Commitment No. 17 Related to Reactor Vessel Surveillance Capsule Removal Schedule Page 2 This commitment change is based upon the following:

1. A formal decision to apply for a second license extension would likely be made after entering the first period of extended operation,

2. NRC license renewal requirements for second license extensions have not yet been determined and are more likely to be finalized after entry into the first period of extended operation, and

3. It is expected that technical requirements will evolve as material science advances, such that submittal prior to the first period of extended operation would be premature.

License renewal commitment 17 has been revised to read as follows:

Existing Reactor Vessel Surveillance program is credited for license renewal, AND Priorto 50 EFPY If an 80-year second period of extended operation is anticipated,actions would be taken to request approval to withdraw remaining standby capsules at equivalent clad-base metal exposures not exceeding the 72 EFPY expected for the possible 80-year second period of extended operation (at about 50 to 54 actual operating EFPY). Schedule changes must be approved by the NRC, as required by 10 CFR 50 Appendix H and as discussed in NRC Administrative Letter 97-04, "NRC Staff Approval for Changes to 10 CFR Part 50, Appendix H, Reactor Vessel Surveillance Specimen Withdrawal Schedules." The need to monitor vessel fluence following removal of the remaining standby capsules, and ex-vessel or in-vessel methods, would be addressed prior to removing the remaining capsules.(RCTSAI 3246904)

Should you need further information regarding this submittal, please contact Thomas N. Weber, Nuclear Regulatory Affairs Department Leader, at (623) 393-5764.

Sincerely, DCM/TNW cc: M. L. Dapas NRC Region IV Regional Administrator B. K. Singal NRC NRR Project Manager for PVNGS M. M. Watford NRC NRR Project Manager S. R. Sandal NRC NRR Project Manager M. A. Brown NRC Senior Resident Inspector for PVNGS