ML24242A213

LLC Submittal of the Nrc’S Request for Docketing of Resolved Audit Response

ML24242A213
Person / Time
Site:	05200050
Issue date:	08/29/2024
From:	Fosaaen C NuScale
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
LO-172998
Download: ML24242A213 (1)

Text

LO-172998

August 29, 2024 Docket No. 052-050

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738

SUBJECT:

NuScale Power, LLC Submittal of the NRCs Request for Docketing of Resolved Audit Response

REFERENCES:

NRC email to NuScale Power entitled, Docketing request for NuScale SDAA Audit issue A-9.1.5-8 dated August 1, 2024

The purpose of this letter is to provide NuScales response to the NRCs request to docket a audit response, noted in the reference above. The response to the invidual audit item is provided in the attachments.

This letter contains NuScales response to the following audit questions from the NRC:

A-9.1.5-8 (nonproprietary)

This letter makes no regulatory commitments and no revisions to any existing regulatory commitments.

If you have any questions, please contact Thomas Griffith at 541-452-7813 or tgriffith@nuscalepower.com.

I declare under penalty of perjury that the foregoing is true and correct. Executed on August 29, 2024.

SSincerely, incerely,

Carrie FosaaenCarrie Fosaaen Vice President, Regulatory Affairs NuScale Power, LLC

Distribution: Mahmoud Jardaneh, Chief New Reactor Licensing Branch, NRC Getachew Tesfaye, Senior Project Manager, NRC Greg Cranston, Project Manager, NRC Thomas Hayden, Project Manager, NRC

NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360.0500 Fax 541.207.3928 www.nuscalepower.com NuScaleNonproprietary

ResponsetoSDAAAuditQuestion

QuestionNumber: A-9.1.5-8

ReceiptDate: 08/14/2023

Question:

On August 8th, the NRC staff and NuScale held an audit call with regards to Audit Item A-9.1.5-

1. This issue is related to the use of the non-endorsed standard NUM-1 as the standard for several Type I Jib Cranes in the SDAA. Regulatory Guidance 1.244, Regulatory Position C1.1.b.2 provides design criteria for an enhanced handling system that does not follows an endorsed standard. During the discussion, NuScale staff asked if the description on how their Jib Crane design met the RG.1.244 criteria can include direct reference to the non-endorsed standard NUM-1. The staff finds that the applicants response should make specific references to the applicable portions of the standard (instead of a generic reference to the complete standard) for each of the criterion identified in RG 1.244. The response to item a. would be acceptable if it references the standard as a whole. When the standard provides several options as to how it meets the design criterion, the applicant may clarify which of the options apply to their design, if the design information is available. The staff intends to evaluate the adequacy of the response and the referenced portion of the standard, for this specific type of crane, and this application once a response has been submitted.

Response

Regulatory Guide 1.244 regulatory position C.1 lists additional criteria necessary for review of ASME NML-1-2019 cranes not previously approved by the NRC. The RG 1.244 regulatory position C.1 criteria a) through g) are dissected below with examples of ASME NUM-1-2016 Type 1A crane requirements. Note that ASME NUM-1-2016 requirements for NUM-I are in addition to the requirements of NUM-II and NUM-III, except where specified.

a) Meetapplicablenationalconsensusstandard(s)identifiedwithinSection1-2,Scope,of ASMEStd.NML-1-2019forthetype(s)ofliftingsystem(s)used.

NuScaleNonproprietary NuScaleNonproprietary

ASME NUM-1 is identified for use in ASME NML-1-2019.

b) Applyqualityassuranceindesign,fabrication,installation,andinitialtesting commensuratewiththecomponentsimportancetostoppingorholdingtheload.

ASME NUM-1 quality assurance requirements ensure that the quality assurance criteria specified in ASME NOG-1 is satisfied.

c) Applyconservativedesigncriteriatothestructuralelementsessentialtosupporttheload (e.g.,applystructuralloadcombinationsanddesigncriteriaconsistentwiththose specifiedinthestandardscitedinRegulatoryPositionC.2).

ASME NUM-1-2016 applies conservative design criteria for Type 1A cranes, consistent to those in NOG-1-2020 for Type 1 cranes.

d) Applyconservativedesigncriteriatothemechanicalcomponentsessentialtostoppingor holdingtheload(e.g.,applymechanicaldesigncriteriaconsistentwiththosespecifiedin thestandardscitedinRegulatoryPositionC.2).

ASME NUM-1-2016 applies conservative design criteria for Type 1A cranes, consistent to those in NOG-1-2020 for Type 1 cranes.

e) Includeredundancyinthedesignofmechanicalcomponentsessentialtostoppingor holdingtheloadthataresubjecttofatigueorwear(i.e.,activecomponentsthatrotateor changeconfigurationtoaccomplishafunctionnecessarytostoporholdtheload).

ASME NUM-I Type 1A cranes include redundancy in the design of mechanical components essential to stopping or holding the load.

f) Usefail-safeelectricalsystemsandcomponentswhenfailureoftheelectricalsystemor componentcouldaffecttheabilitytostoporholdtheload.

ASME NUM-1-2016 applies single failure proof features for Type 1A cranes, which requires the electrical system to include such features, consistent to those in NOG 2020 for Type 1 cranes.

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g) Applyappropriatequalityassurancemeasurestoelectricalcomponentsintendedto detectequipmentfailuresandthatactuatefollowingthoseequipmentfailurestostopor holdtheload.

ASME NUM-1 quality assurance requirements ensure that the quality assurance criteria specified in ASME NOG-1 is satisfied.

No changes to the SDAA are necessary.

NuScaleNonproprietary