ML19150A715

Independent Spent Fuel Storage Installation Docket Nos. Stn 50-528, 50-529, 50-530, and 72-44 10 CFR 50.59, 10 CFR 72.48, and Commitment Change Annual Reports

ML19150A715
Person / Time
Site:	Palo Verde
Issue date:	05/30/2019
From:	Dilorenzo M Arizona Public Service Co
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
102-07926-MDD
Download: ML19150A715 (5)

Text

10 CFR 50.59 / 10 CFR 72.48 Palo Verde Nuclear Generating Station P.O. Box 52034 102-07926-MDD Phoenix, Arizona 85072-2034 May 30, 2019 Mail Station 7636 623-393-3495 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Palo Verde Nuclear Generating Station Units 1, 2, 3 and Independent Spent Fuel Storage Installation Docket Nos. STN 50-528, 50-529, 50-530, and 72-44 10 CFR 50.59, 10 CFR 72.48, and Commitment Change Annual Reports Enclosed please find the Arizona Public Service Company (APS), title 10 of the Code of Federal Regulations (10 CFR) 50.59, 10 CFR 72.48 and Commitment Change reports for January 1, 2018, through December 31, 2018.

In accordance with 10 CFR 50.59(d)(2), APS is providing a brief description and summary of the evaluations required by 10 CFR 50.59(d)(1) for each change completed during the period. contains a report of the evaluations written during 2018, regardless of the implementation status of the evaluated action.

In accordance with 10 CFR 72.48(d)(2), APS is reporting that there was no change completed during the period that was required to be reported pursuant to 10 CFR 72.48.

In accordance with the APS commitment management program, APS is reporting one NRC commitment change made during the referenced time period as described in Enclosure 2 to this letter. Other commitment changes made during 2018 that were reported in separate correspondence are not included in Enclosure 2.

No new commitments are being made to the NRC by this letter. Should you need further information regarding this submittal, please contact me at (623) 393-3495.

Sincerely, Dilorenzo, Michael Digitally signed by Dilorenzo, Michael D(Z99838)

D(Z99838) DN: cn=Dilorenzo, Michael D(Z99838)

Date: 2019.05.30 14:03:03 -07'00' Michael, D. DiLorenzo Department Leader, Nuclear Regulatory Affairs MDD/TMJ/mg

Enclosure:

1. 10 CFR 50.59 and 10 CFR 72.48 Reports, January 2018 - December 2018

2. Commitment Change Reports, January 2018 - December 2018 A member of the STARS Alliance LLC Callaway

• Diablo Canyon

• Palo Verde

• Wolf Creek

Enclosure 1 10 CFR 50.59 and 10 CFR 72.48 Reports January 2018 - December 2018

Enclosure 1 PVNGS 10 CFR 50.59 and 10 CFR 72.48 Reports (January 2018 through December 2018)

Log Doc Doc Number Description Summary Type 50.59 SDOC SDOC N001-1900- It addresses changes to radiological consequences This change does not E-17-0002 CALC 01394 design analyses resulting from the Westinghouse require prior NRC Rev. 000 EDC SDOC N001-0205- Next Generation Fuel (NGF) modification. The approval in DMWO 00154 NGF modification will be implemented under accordance with CALC 13-NC-ZY-0251 DMWO 4557156 and will replace Current Value 10 CFR 50.59(c)(1).

EDC 2015-00633 for Added Fuel with new Westinghouse NGF.

CALC 13-NC-ZY-0263 Note: NGF has been approved by the NRC safety evaluation, see ML17319A107.

50.59 DMWO DMWO 4411244 It addresses installation of Open Phase Protection This change does not E-18-0001 LDCR LDCR 15-B011, 15- System monitoring and detection for each of require prior NRC Rev. 000 F029 PVNGS three non-class 1E start-up transformers approval in to identify an open phase condition. accordance with 10 CFR 50.59(c)(1).

Note: There was no 10 CFR 72.48 change completed during the 2018 period that required to be reported Acronyms/Abbreviation List CALC - Calculation DMWO - Design Modification Work Order EDC - Engineering Document Change LDCR - Licensing Document Change Request SDOC - Supplier Document Page 1 of 1

Enclosure 2 Commitment Change Reports January 2018 - December 2018

Enclosure 2 COMMITMENT CHANGE 18-C001 Commitment Number: Regulatory Commitment Tracking System Action Item (RCTSAI) 12022 Source Document:

Engineering Evaluation 18-01941-004 Existing Commitment

Description:

Provide Preventative Maintenance (PM) tasks for Calibration of the Class 1E Switchgear Undervoltage (UV) and Diesel Generator Protective Relays every two years.

Revised Commitment

Description:

Provide PM tasks for calibration of the Emergency Diesel Generator (EDG) protective relays that are bypassed in the emergency mode every four years (4A). Calibration PM tasks for the Class 1E Switchgear UV and Diesel Generator Protective Quality Related (Q) Relays will remain at every two years (2A).

Justification of Change:

Reason for the change:

Based on the following, the modification of RCTSAI 12022 to allow a calibration interval of 4A for the EDG generator protective relays that are bypassed in the emergency mode should be approved:

• Bypassed during EDG emergency mode operations and have no impact to EDG safety function

• Protective relays are for equipment protection only during testing which is about 100 hour0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />s/year

• Any minor expected increase drift from setpoint between calibrations resulting from an increase PM interval will not impact equipment protection if trip functions are maintained

• Performed reliably in-service over an extended period at PVNGS

• Within industry PM guidelines for electro-mechanical style generator protective relays The Generator Differential (87) protective relay is Class Q, is an emergency mode trip and can cause a loss of EDG safety function, therefore, its calibration interval shall remain at current 2A.

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