ML22024A040

Breakout Questions - Trp 85 - No Aging Effects

ML22024A040
Person / Time
Site:	Oconee
Issue date:	01/19/2022
From:	Angela Wu NRC/NRR/DNRL/NLRP
To:
Wu A, 301-415-2995
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Text

Oconee SLRA: Breakout Questions TRP 85: No Aging Effects (no AMP associated with this TRP)

Question Number SLRA Section SLRA Page Background / Issue (As applicable/needed)

Discussion Question /

Request 1

3.1.2.2.15 Table 3.1.1 3-37 3-73 SLRA Section 3.1.2.2.15 states [t]here are no stainless steel piping or piping components exposed to concrete in the ONS Reactor Coolant System. The further evaluation also applies to steel piping, which is not addressed.

SLRA Table 3.1.1 (item 3.1.1-105) states (in part): ONS [Oconee Nuclear Station]

has no stainless steel piping, piping components exposed to concrete in the Reactor Vessel, Internals, and Reactor Coolant System. Item 3.1.1-105 is applicable to steel (not stainless steel) piping and piping components exposed to concrete.

Steel piping is not addressed in further evaluation FE 3.1.2.2.15 or the corresponding Table 1 item (i.e., item 3.1.1-105).

2 Table 3.1.1 Table 3.1.2-3 3-79 3-137 SLRA Table 3.1.1 (item 3.1.1-137) states

[n]ot applicable. ONS has no in-scope copper alloy piping, piping components exposed to air, condensation, gas in the Reactor Vessel, Internals, and Reactor Coolant System.

SLRA Table 3.1.2-3, Reactor Vessel, Reactor Internals, and Reactor Coolant System - Reactor Coolant System - Aging Management Evaluation, cites copper alloy piping exposed to air.

There is an apparent discrepancy between SLRA Table 3.1.1 (item 3.1.1-137) and SLRA Table 3.1.2-3 with respect to if there is copper alloy piping exposed to air.