ML20160A247

Audit Summary Memo NuScale ECCS Boron Redistribution Issue

ML20160A247
Person / Time
Site:	NuScale
Issue date:	07/28/2020
From:	Bavol B NRC/NRR/DNRL/NRLB
To:	Michael Dudek NRC/NRR/DNRL/NVIB
Bavol B
Shared Package
ML20160A224	List: ML20160A247 ML20160A250
References
Download: ML20160A247 (2)

Text

July 28, 2020 MEMORANDUM TO:

Michael I. Dudek, Chief New Reactor Licensing Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation FROM:

Bruce M. Bavol, Project Manager /RA/

New Reactor Licensing Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation

SUBJECT:

AUDIT

SUMMARY

FOR THE REGULATORY AUDIT OF THE NUSCALE POWER, LLC, DESIGN CERTIFICATION APPLICATION, EMERGENCY CORE COOLING SYSTEM BORON REDISTRIBUTION ISSUE AND APPLICABLE DESIGN CHANGES The U.S. Nuclear Regulatory Commission (NRC) staff conducted an audit initiated on March 4, 2020, and ending on June 26, 2020, to review a NuScale Power, LLC (NuScale), design change associated with an instrumentation and controls setpoints and/or logic to address an issue related to boron redistribution that was identified in their design certification application. The design change also addressed an associated return to power analyses associated with Section 15.0.6 of the NuScale design. The audit took place via the Electronic Reading Room, through video teleconferences, and with meetings at the NRCs offices in Rockville, Maryland.

The enclosed audit summary describes the actions performed, the content of the review, the audit participants, and the audits observations.

Docket No.52-048

Enclosures:

1. Audit Summary - (Non-Proprietary)

2. Audit Summary - (Proprietary) cc w/encl.: DC NuScale Power, LLC, Listserv (w/o Enclosure 2)

CONTACT: Bruce M. Bavol, NRR/DNRL 301-415-6715

Pkg: ML20160A224 Letter: ML20160A247 Enclosure No. 1: ML20160A250 Enclosure No. 2: ML20160A248

• via email NRR-106 OFFICE NRR/DNRL/NRLB:PM NRR/DNRL/NRLB:LA NRR/DNRL/NRLB:BC NAME BBavol CSmith*

MDudek*

DATE 07/16/2020 07/17/2020 07/16/2020 OFFICE NRR/DEX/EMIB:BC NRR/DRA/APLC:BC NRR/DSS/SNRB:BC NAME ABuford*

SRosenberg*

RPatton*

DATE 07/14/2020 07/16/2020 07/16/2020 OFFICE NRR/DSS/STSB:BC NRR/DEX/EICA:BC NRR/DSS/SNSB:BC NAME VCusumano*

JJohnston*

SKrepel*

DATE 07/10/2020 07/14/2020 07/16/2020