ML23090A139

April 4, 2023 Presubmittal Meeting Presentation - LAR to Adopt TSTF-266, Eliminate the Remote Shutdown System Table of Instrumentation and Controls (EPID: L?2023?LRM-0017)

ML23090A139
Person / Time
Site:	Palo Verde
Issue date:	04/04/2023
From:	Arizona Public Service Co
To:	Office of Nuclear Reactor Regulation
Lingam S, 301-415-1564
References
EPID: L?2023?LRM-0017
Download: ML23090A139 (1)

Text

Pre-Submittal Presentation - Adoption of TSTF-266-A, Revision 3, Eliminate the Remote Shutdown System Table of Instrumentation and Controls, LAR April 2023

Agenda

• Overview of TSTF-266-A

• Proposed TS and TS Bases Changes

• Precedents

• Submittal Timeline 2

Overview of TSTF-266-A

• September 10, 1999, the NRC approved TSTF-266-A (ADAMS Legacy Accession No. 9909160189).

• TSTF-266 removed Table from the Remote Shutdown System LCO that specified functions needed to be operable, while leaving intact overall LCO stating that remote shutdown system must be operable.

• Information relocated to TS Bases.

• Unnecessary to list specific instruments and controls in TS LCO to provide adequate assurance that functions can be performed.

3

Proposed TS Changes to 3.3.11 4

Proposed TS Changes to 3.3.11 5

Proposed Changes to TS Bases 3.3.11 6

Proposed Changes to TS Bases 3.3.11 7

Proposed Changes to TS Bases 3.3.11 8

Precedents

• Vogtle Electric Generating Plant, Units 1 and 2, and Joseph M. Farley Nuclear Plant, Units 1 and 2, included TSTF-266 in LARs that adopted several TSTF travelers. Applications approved by LAs 180/161 on June 9, 2016 (ADAMS Accession Number ML15132A569), and 203/188 on August 3, 2016 (ADAMS Accession Number ML15233A448), respectively.

• TVA Sequoyah Nuclear Plant incorporated TSTF-266 as part of their conversion to the Improved TS (ADAMS Accession Numbers ML15238B460, ML15236A351, ML15258A511, ML15254A509, and ML15258A516).

• Watts Bar Nuclear Plant adopted TSTF-266, documented in NRC letter dated March 18, 2019 (ADAMS Accession Number ML19066A009).

9

Submittal Timeline

• Submit to NRC April 2023

• Estimated 1-yr NRC review time

• Requesting a 90-day implementation time 10

Questions