ML19302E460

July 22, 2019 Public Meeting - NuScale Interface Items for Penetrations and Ventilation Ducts

ML19302E460
Person / Time
Site:	NuScale
Issue date:	10/29/2019
From:	Getachew Tesfaye NRC/NRR/DNRL/NRLB
To:	Michael Dudek NRC/NRR/DNRL/NRLB
Tesfaye G / 415-8013
References
Download: ML19302E460 (5)

Text

October 29, 2019 MEMORANDUM TO: Michael I. Dudek, Chief New Reactor Licensing Division of New and Renewed Licenses Office of Nuclear Reactor Regulation FROM: Getachew Tesfaye, Senior Project Manager /RA/

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

SUMMARY

OF THE JULY 22, 2019, CATEGORY 1 PUBLIC TELECONFERENCE TO DISCUSS INTERFACE ITEMS FOR PENETRATIONS AND VENTILATION DUCTS ASSOCIATED WITH THE NUSCALE POWER, LLC DESIGN CERTIFICATION APPLICATION The U.S. Nuclear Regulatory Commission (NRC) held a Category 1 public teleconference meeting on July 22, 2019, to discuss interface items for penetrations and ventilation ducts associated with the NuScale Power, LLC (NuScale) design certification application. The meeting attendees were personnel from NuScale. Members of the general public did not attend the meeting.

The public meeting notice dated June 25, 2019, can be found in the NRCs Agencywide Documents Access and Management Systems under Accession No. ML19203A002. This meeting notice was also posted on the NRC public Web site.

Enclosed is the meeting agenda (Enclosure 1), list of participants (Enclosure 2), and overview (Enclosure 3).

Docket No.52-048

Enclosures:

1. Meeting Agenda

2. List of Attendees

3. Meeting Overview cc w/encl.: DC NuScale Power, LLC Listserv CONTACT: Getachew Tesfaye, NRO/DNRL 301-415-8013

ML19305E460 *via email NRR-106 OFFICE DNRL/NRLB: PM DNRL/NRLB: LA DNRL/NRLB: PM NAME GTesfaye SGreen* GTesfaye*

DATE 10/28/2019 10/29/2019 10/29/2019 U.S. NUCLEAR REGULATORY COMMISSION CATEGORY 1 PUBLIC MEETING TO DISCUSS INTERFACE ITEMS FOR PENETRATIONS AND VENTILATION DUCTS ASSOCIATED WITH THE NUSCALE POWER, LLC DESIGN CERTIFICATION APPLICATION MEETING AGENDA July 22, 2019 11:00 - 11:10 AM Introductions and Identification of topics 11:10 - 11:50 AM Discussion of interface items for penetrations and ventilation ducts 11:50 - 12:00 PM Public Comments/Questions 12:00 PM Meeting Closure Enclosure 1

U.S. NUCLEAR REGULATORY COMMISSION CATEGORY 1 PUBLIC MEETING TO DISCUSS INTERFACE ITEMS FOR PENETRATIONS AND VENTILATION DUCTS ASSOCIATED WITH THE NUSCALE POWER, LLC DESIGN CERTIFICATION APPLICATION LIST OF ATTENDEES July 22, 2019 Name Organization Getachew Tesfaye U.S. Nuclear Regulatory Commission (NRC)

Edward Stutzcage NRC Ronald LaVera NRC Robert Weisman NRC Michael Dudek NRC Cayetano Santos NRC Andy Campbell NRC Carrie Fosaaen NuScale Power, LLC (NuScale)

John Bristol NuScale Jim Osborn NuScale Russell Goff NuScale Rose Charoensombud NuScale Gary Becker NuScale Mark Shaver NuScale Enclosure 2

U.S. NUCLEAR REGULATORY COMMISSION OVERVIEW OF THE JULY 22, 2019, PUBLIC MEETING ON INTERFACE ITEMS FOR PENETRATIONS AND VENTILATION DUCTS ASSOCIATED WITH THE NUSCALE POWER, LLC DESIGN CERTIFICATION APPLICATION The purpose of this meeting was to get alignment between NuScale Power, LLC (NuScale) and the U.S. Nuclear Regulatory Commission (NRC) on the implementation of interface requirements regarding identified areas that have not yet been fully designed. The staff has identified what it believes is a workable path forward on three requests for additional information (RAIs) associated with needed design implementation interface requirements (RAI-9295 Question 12.03-55, RAI-9656 Question 12.03-63 and RAI-9278 Question 12.03-33). These RAIs pertain to radiation shielding associated with the penetrations in the shield wall and the use of fire dampers to isolate ventilation ducts for the purpose of confining radioactive materials.

The discussion topics for the July 22, 2019, meeting can be found in the NRCs Agencywide Documents Access and Management Systems under Accession No. ML19204A277.

A. Outcomes:

1. The staff gave the economic simplified boiling-water reactor (ESBWR) experience as an acceptable example for implementing interface requirements. The ESBWR design implemented interface requirements by making changes to the ESBWR Design Control Document Tier 1, Chapter 4, (ADAMS Accession No. ML14100A493). One possible success path that the NRC has identified for addressing the impacted RAIs is the implementation of changes to the NuScale DCD Tier 1, Certified Design Descriptions and Inspections, Tests, Analyses, & Acceptance Criteria (ITAAC), Chapter 4, Interface Requirement, based on those described in the referenced discussion topics.

2. NuScale disagreed and pointed out an apparent inconsistency with the fire protection requirement for three-hour fire barrier described in Chapter 9 and pipe routing where this type of interface items was not asked. They believe the combined license (COL) item and the other information they provided in Chapter 12 should be enough.

3. The staff noted that the COL item NuScale proposed does not go far enough for an item that is within the scope of the design certification and has not yet been designed.

4. The staff will consider providing additional document that clarifies the staffs position on interface item requirement after discussing the matter with management.

Enclosure 3