ML22010A097

Trp 038 Psl Internal Surfaces Breakout Questions - Allik

ML22010A097
Person / Time
Site:	Saint Lucie
Issue date:	01/07/2022
From:	Florida Power & Light Co
To:	Office of Nuclear Reactor Regulation
Rodriguez-Luccioni H
References
EPID L-2021-SLR-0002
Download: ML22010A097 (2)

Text

St. Lucie SLRA: Breakout Questions SLRA Section AMP B.2.3.24: Inspection of Internal Surfaces in Miscellaneous Piping and Ducting Components TRP: 38 Note: Breakout Questions are provided to the applicant and will be incorporated into the publicly-available audit report.

Technical Reviewer Allik 1/5/2022 Technical Branch Chief Bloom Concurrence Date Breakout Session Date/Time To be filled in by PM Applicant Staff NRC staff To be filled out by PM during breakout Question Number SLRA Section SLRA Page Background / Issue (As applicable/needed)

Discussion Question / Request Outcome of Discussion 1

Table 3.3.2-8 3.3-193 3.3-201 SLRA Table 3.3.2-8 states stainless steel piping and valve bodies (with an intended function of pressure boundary) exposed to raw water will be managed for loss of material using Inspection of Internal Surfaces in Miscellaneous Piping and Ducting Components program.

SLRA Table 3.3-1 (item 134) states stainless steel piping and piping components exposed to raw water are managed for loss of material and flow blockage due to fouling using the Inspection of Internal Surfaces in Miscellaneous Piping and Ducting Components program.

Based on the intended function of the subject piping and valve bodies being pressure boundary (i.e., provide pressure-retaining boundary so that sufficient flow at adequate pressure is delivered),

the staff requests a clarifying discussion to understand why flow blockage due to fouling is not an applicable aging effect/mechanism requiring management.

2 Table 3.3.2-4 3.3-111 3.3-124 3.3-125 SLRA Table 3.3.2-4 states the following components will be managed for (a) hardening or loss of strength; and (b) loss of material The staff requests a clarifying discussion to understand why cracking or blistering is not an

using the Inspection of Internal Surfaces in Miscellaneous Piping and Ducting Components program:

Polyester flexible hoses exposed to air-dry.

Plexiglas sight glasses exposed to treated water and air-indoor uncontrolled.

SLRA Table 3.3-1 (item 263) states polymeric components exposed to air and treated water are managed for (a) hardening or loss of strength; (b) loss of material; and (c) cracking or blistering using the Inspection of Internal Surfaces in Miscellaneous Piping and Ducting Components program.

applicable aging effect requiring management for the subject components in SLRA Table 3.3.2-4.