ML18229A114

Audit Plan for Regulatory Audit of Nuscale Power, LLC Design Documents for Containment Isolation Valves and Reactor Safety Valves

ML18229A114
Person / Time
Site:	NuScale
Issue date:	08/22/2018
From:	Amadiz Marieliz Vera NRC/NRO/DLSE/LB1
To:	Samson Lee NRC/NRO/DLSE/LB1
Vera A / 415-5861
References
Download: ML18229A114 (6)

Text

August 22, 2018 MEMORANDUM TO: Samuel S. Lee, Chief Licensing Branch 1 Division of Licensing, Sitting, and Environmental Assessment Office of New Reactors FROM: Marieliz Vera, Project Manager /RA/

Licensing Branch 1 Division of Licensing, Sitting, and Environmental Assessment Office of New Reactors

SUBJECT:

AUDIT PLAN FOR REGULATORY AUDIT OF NUSCALE POWER, LLC; DESIGN DOCUMENTS FOR CONTAINMENT ISOLATION VALVES AND REACTOR SAFETY VALVES On January 6, 2017, NuScale Power, LLC (NuScale) submitted a design certification application (DCA) for a small modular reactor to the U.S. Nuclear Regulatory Commission (NRC)

(Agencywide Documents Access and Management System Accession No. ML17013A229).

The NRC staff started its detailed technical review of NuScales DC application on March 15, 2017.

The purpose of the subject audit to be conducted by the NRC staff is to: (1) gain a better understanding of the NuScale design of the containment isolation valves (CIVs) and reactor safety valves (RSVs); (2) verify information provided in the DCA; (3) identify information that may require docketing to support the basis of the licensing or regulatory decision; and (4) review related documentation and non-docketed information to evaluate conformance with regulatory guidance and compliance with NRC regulations.

The audit will take place at NuScales offices in Rockville, Maryland, and/or online via NuScales electronic reading room. The audit is currently scheduled to start on September 4, 2018, and end on October 17, 2018. The audit plan is enclosed.

Docket No.52-048

Enclosure:

1. Audit Plan cc w/encl.: DC NuScale Power, LLC Listserv CONTACT: Marieliz Vera, NRO/ DLSE 301-415-5861

ML18229A114 OFFICE NRO/DLSE/LB1: PM NRO/DLSE/LB1: LA NRO/DLSE/LB1: PM NAME MVera MMoore MVera DATE 08/17/2018 08/20/2018 08/22/2018 U.S. NUCLEAR REGULATORY COMMISSION REGULATORY AUDIT OF DESIGN DOCUMENTS FOR CONTAINMENT ISOLATION VALVES AND REACTOR SAFETY VALVES NUSCALE STANDARD PLANT DESIGN CERTIFICATION DOCKET NO.52-048 AUDIT PLAN APPLICANT: NuScale Power, LLC APPLICANT CONTACT: Marty Bryan, NuScale DURATION: September 4, 2018 to October 17, 2018 LOCATION: U.S. Nuclear Regulatory Commission (NRC)

Rockville Office 11545 Rockville Pike Rockville, MD 20852-2738 NuScale Rockville Office or NuScale Electronic Reading Room (eRR)

AUDIT TEAM: Thomas G. Scarbrough, Senior Mechanical Engineer, NRC, Audit Lead John Budzynski, Reactor Systems Engineer, NRC Clinton Ashley, Reactor Systems Engineer, NRC James Gilmer, Reactor Systems Engineer, NRC Marieliz Vera Amadiz, Project Manager, NRC I. BACKGROUND On March 15, 2017, the U.S. Nuclear Regulatory Commission (NRC or Commission) accepted the design certification application (DCA) for docketing for the NuScale Power, LLC (NuScale)

Standard DCA on for a small module reactor (SMR) design submitted by NuScale (Reference 1). NuScale submitted Revision 1 to its Standard Plant DCA on March 15, 2018 (Reference 2).

The NRC staff determined that efficiency gains would be realized by auditing the documents supporting the NuScale SMR design presented in the NuScale Final Safety Analysis Report (FSAR), in lieu of multiple requests for additional information (RAI) for the applicant to submit design documents. The purpose of this audit is to allow the NRC technical staff to gain an understanding of the design of the containment isolation valves (CIVs) and reactor safety valves (RSVs) in the NuScale reactor to better focus the staffs inquiries to the applicant. During the audit and interactions with the applicant, there may be detailed RAIs developed, which would be part of a future formal correspondence.

Enclosure 1

II. PURPOSE The purpose of the audit is to evaluate the detailed design of the CIVs and RSVs in support of the NuScale Standard Plant DCA.

III. REGULATORY AUDIT BASIS The audit basis is to confirm that the design of the NuScale CIVs and RSVs is consistent with the assumptions for the performance of those valves in the NuScale DCA.

Title 10 of the Code of Federal Regulations (10 CFR) Part 52, Licenses, Certifications, and Approvals for Nuclear Power Plants, Section 47, Contents of Applications; Technical Information, states the following:

The application must contain a level of design information sufficient to enable the Commission to judge the applicants proposed means of assuring that construction conforms to the design and to reach a final conclusion on all safety questions associated with the design before the certification is granted. The information submitted for a design certification must include performance requirements and design information sufficiently detailed to permit the preparation of acceptance and inspection requirements by the NRC, and procurement specifications and construction and installation specifications by an applicant. The Commission will require, before design certification, that information normally contained in certain procurement specifications and construction and installation specifications be completed and available for audit if the information is necessary for the Commission to make its safety determination.

The NRC staff will review the design documents for the CIVs and RSVs described in the NuScale FSAR Tier 2:

• Section 3.9.6, Functional Design, Qualification, and Inservice Testing Programs for Pumps, Valves, and Dynamic Restraints,

• Section 5.2.2, Overpressure Protection, and

• Section 6.2.4, Containment Isolation System.

The NRC staff will conduct this audit in accordance with the guidance provided in the Office of New Reactors (NRO)-REG-108, Regulatory Audits (Reference 3).

IV. REGULATORY AUDIT SCOPE The primary scope of this audit is the review of the design demonstration documentation, design drawings, design specifications, test plans, and qualification plans for the CIVs and RSVs to be used in the NuScale SMR to verify that the design and actuation of those valves is consistent with their performance assumed in the NuScale FSAR.

2

V. DOCUMENTS/INFORMATION NECESSARY FOR THE AUDIT The design demonstration documentation, design drawings, design specifications, test plans, and qualification plans for the CIVs and RSVs are to be made available to the NRC staff in the NuScale eRR. Appropriate handling and protection of proprietary information shall be acknowledged and observed throughout the audit.

VI. SPECIAL REQUESTS The NRC staff requests that NuScale provide the technical staff with access to the audit documents. NuScale can upload the requested documents into the NuScale eRR for NRC staffs review. During the audit, the NRC staff will have questions and discussion items for the NuScale subject matter experts. When the NRC staffs review of the documents associated with a specific issue is complete, the staff will notify either the NRO, Division of Licensing, Sitting, and Environmental Assessment or NuScale that these documents can be removed from eRR; thereby minimizing their residence time in eRR.

VII. AUDIT ACTIVITIES AND DELIVERABLES The NRC audit team review will review the technical documents identified in Section V of this audit plan.

The regulatory audit will be scheduled from September 4, 2018 through October 17, 2018, from 7:00 AM to 3:00 PM, at the NRC Rockville Office, 11545 Rockville Pike, Rockville, MD 20852-2738. At the end of the audit, a technical audit summary will be provided by the technical reviewers to the NRC Project Manager (PM) for prompt issuance to the applicant as well as a public version of the same.

The NRC PM will coordinate with NuScale in advance of audit activities to verify specific documents and identify any changes to the audit schedule and requested documents.

The audit entrance/exit meetings and weekly audit meeting are to be scheduled as followings:

• Entrance Meeting - September 4, 2018.

• Exit Meeting: October 17, 2018.

• Weekly Audit Telephone Conference (as needed): Wednesday 11:00 AM - 12:00 PM Eastern Standard Time.

The NRC staff acknowledges the proprietary nature of the information requested. It will be handled appropriately throughout the audit. While the NRC staff will take notes, the NRC staff will not remove hard copies or electronic files from the audit site.

During the weekly telephone conferences, the NRC will discuss with NuScale any issues identified during the audit, and their resolution either through audit activities or by another mechanism, such as RAIs or public meetings. During the weekly conferences, NRC will also identify any new emerging information needs as well as documents that can be removed from eRR.

3

At the completion of the audit, the audit team will issue an audit summary within 90 days that will be declared and entered as an official agency record in the NRCs Agencywide Documents Access and Management System (ADAMS) records management system.

The audit outcome may be used to identify any additional information to be submitted for making regulatory decisions, and will assist the NRC staff in the issuance of RAIs (if necessary) to support the NRC review of the NuScale design certification application in preparation of the NRCs Safety Evaluation Report.

If necessary, any circumstances related to the performance of the audit will be communicated to Marieliz Vera Amadiz, NRC at 301-415-5861, or email: Marieliz.VeraAmadiz@nrc.gov.

VIII. REFERENCES

1. NRC Letter, NuScale Power, LLC. - Acceptance of an Application for Standard Design Certification of a Small Modular Reactor, ADAMS Accession No. ML17074A087, March 23, 2017.

2. NuScale Standard Plant DCA, Revision 1, ADAMS Accession No. ML18086A090, March 15, 2018.

3. NRO-REG-108, Regulatory Audits, ADAMS Accession No. ML081910260, April 2, 2009.

4