ML24215A025

LLC, Response to SDAA Audit Question Number A-3.6.2-1

ML24215A025
Person / Time
Site:	05200050
Issue date:	08/02/2024
From:	NuScale
To:	Office of Nuclear Reactor Regulation
Shared Package
ML24215A000	List: ML24215A001 ML24215A002 ML24215A003 ML24215A004 ML24215A005 ML24215A006 ML24215A007 ML24215A009 ML24215A010 ML24215A012 ML24215A013 ML24215A014 ML24215A015 ML24215A016 ML24215A017 ML24215A020 ML24215A021 ML24215A022 ML24215A023 ML24215A025 ML24215A027 ML24215A028 ML24215A030 ML24215A034 ML24215A036 ML24215A037 ML24215A038 ML24215A040 ML24215A042 ML24215A044 ML24215A045 ML24215A047 ML24215A050 ML24215A052 ML24215A054 ML24215A055 ML24215A057 ML24215A060 ML24215A062 ML24215A064 ML24215A066 ML24215A067 ML24215A069 ML24215A070 ML24215A072 ML24215A073 ML24215A074 ML24215A075 ML24215A076 ML24215A078 ... further results
References
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Download: ML24215A025 (1)

Text

Response to SDAA Audit Question Question Number: A-3.6.2-1 Receipt Date: 07/03/2023 Question:

Provide a discussion on the impact of DWO on main steam and feedwater system High Energy Line Break (HELB) as DWO is a Level-A/B event and the associated stresses and CUF need to be included per BTP3-4 for High energy Line Break postulation.

Response

Topical Report ((2(a),(c), ECI describes the evaluation model used to predict DWO onset in the NuScale Power Module (NPM-20) ((

}}2(a),(c), ECI As described in (( 
}}2(a),(c), ECI NuScale Nonproprietary NuScale Nonproprietary

Therefore, there are no DWO-related stresses to consider in the design of the MS system and FW system piping or in the determination of postulated pipe ruptures per BTP 3-4. No changes to the SDAA are necessary. NuScale Nonproprietary NuScale Nonproprietary}}