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Session 2 - International Initiatives on Codes and Standards
	ML23251A058
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Issue date:	09/13/2023
From:	Robert Roche-Rivera; NRC/RES/DE
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International Initiatives on Codes and Standards Opening Remarks by Sabrina Atack, Deputy Director, OIP Session Chair: Tex Steinfeldt, International Programs Specialist, RES/PMDA Panelists/Speakers:

Pekka Pyy (IAEA)

Sangmin Lee (NEA)

Nuclear Harmonization and Standardization Initiative (NHSI)

Industry Track Topic 2 Common Practices on Codes & Standards P.Pyy IAEA NENP, September 2023 2

NHSI Industry Track

WG1: Framework for information exchange

WG2: International pre-licensing Regulators Harmonization of regulatory reviews Regulatory Approaches Track

WG3: Leveraging other regulatory Effective Global Deployment of reviews Governments SMR Regulators Forum Safe and Secure Advanced IAEA as facilitator Technology within and between the tracks Holders

Topic 1: Harmonization of high-level user requirements Operators and Nuclear Reactors

Topic 2: Common Approaches other end-users Harmonization and on Codes & Standards Standardization of

Topic 3: Experimental Testing and Industrial Approaches Validation for Design and Safety Track International Analysis Computer Codes Organisations

Topic 4: Acceleration of nuclear and Associations infrastructure implementation for SMR 3

Topical Groups of the NHSI Industry Track The Industry Track is divided into 4 topical groups to foster initiatives in the industry that aim to facilitate global deployment of SMRs through standardization and harmonization.

Topic 1: Harmonization of high- Topic 2: Common Approaches on level user requirements Codes & Standards Scientific Secretary: Benot Lepouzé Scientific Secretary: Pekka Pyy b.lepouze@iaea.org p.t.pyy@iaea.org Topic 3: Experimental Testing Topic 4: Acceleration of nuclear and Validation for Design and infrastructure implementation Safety Analysis Computer Codes for SMRs and Microreactors Scientific Secretary: Eve-Lyne Pelletier Scientific Secretary: Michelle Scott e.pelletier@iaea.org m.l.scott@iaea.org 4

TG 2 Objectives Identify similarities and differences Understand why they exist Share information on the findings Develop common approaches Harmonize where sensible IAEA to work as harmonizer of the harmonizers Tangible deliverables for industry uses 5

TG2 Members Participants (as of September 2023)

Argentina: CNEA, NA-SA Canada: COG Belgium: Tractebel China: CNNP / Hainan NP Finland: TVO and FORTUM France: CEA, Framatome, EdF, and BV Italy: ANSALDO NUCLEARE Japan: Hitachi-GE and MHI Republic of Korea: KAERI and KEPCO Russian Federation: Rosatom etc.

United Kingdom: Rolls-Royce SMR The more, the merrier .

United States: Westinghouse, Nucscale, Last Energy, GEH, EPRI, ASME and NEI 25 companies from 12 Member States World Nuclear Association (WNA) 6 WNA as a strategic partner

TG 2 Programme of Work Developing a Platform for Information Sharing NHSI Topic 2 Scope I. Codes & Standards II. Oversight & Acceptance A. QUALITY AND MANAGEMENT SYSTEM A. A USE OF STANDARD, PROVEN STANDARDS USED WIDELY IN THE MEMBER SERIALLY MANUFACTURED STATES (APPLICABLE TO SMRS)

INDUSTRIAL GRADE ITEMS B. ENGINEERING STANDARDS FOR THE DESIGN AND B. NON-NUCLEAR CODES, STANDARDS, CONSTRUCTION OF SMRS (WNA LEAD)

LAW AND REGULATIONS RELEVANT TO C. EQUIPMENT QUALIFICATION STANDARDS FOR SMR DEPLOYMENT NUCLEAR (SMRS) FACILITIES C. OVERSIGHT ACTIVITIES REQUIRED BY D. C&S USED IN VARIOUS SMRS (AND THEIR CODES, STANDARDS, LAW AND PROJECTS) REGULATIONS E. C&S FOR ADVANCE MANUFACTURING TO BE USED FOR SMRS (AND THEIR PROJECTS) 7

Topic 2 Work in Progress I. CODES AND STANDARDS FOR USE IN SMRS I. A Quality and management system standards used widely in the member states

Updating contents of the previously existing IAEA toolkit in progress I. B Engineering standards for the design and construction of SMRs (WNA lead)

Mechanical standard high-level benchmarking complete with six standards Release by the end of the year 2023 - Other disciplines to be added (I&C, civil,..)

I. C Equipment qualification standards for nuclear facilities

Nuclear EQ standards shared in the IAEA toolkit A white paper considered I. D C&S used in various SMRs (and their projects)

Several SMR projects have shared their C&S strategies, and they have been made available to NHSI I.E C&S for advance manufacturing (am) to be used for SMRs (and their projects)

Discussions began with GIF, follow-up 8

Topic 2 Work in Progress II OVERSIGHT AND ACCEPTANCE ISSUES RELATED TO C&S II.A Use of standard, proven serially manufactured industrial grade items (co-led by WNA)

TECDOC Suitability assessment of using commercial grade items in NPP safety systems to be issued in autumn 2023 with a white paper on using proven serial industrial products in SMRs II.B Non-nuclear codes, standards, law and regulations relevant to SMR deployment

Includes for example: building, fire, industrial safety &

ergonomics, system of units, electricity frequencies etc.

C&S outside nuclear regulation - work in progress Flag symbols from the II.C Oversight activities required by codes, standards, IAEA toolkit (II.C) law and regulations

Material in the IAEA toolkit to be checked by participants in 2023. Problem formulation paper on serial manufacturing of long-lead nuclear items in progress 9

NHSI Industry TG2 2 Platform NHSI TG2 Umbrella Sharepoint platform 10

Topic 2 - Way Forward Topic 2 - Common Approaches on Codes and Standards Phase 1- Planning and Phase 2 - Developing Phase 3 - Harvesting the Phase 4 - Long-Term Alignment Contents & Deliverables Fruits Collaboration 2022 2023 2024 2025

Kick-off (1-2 Dec 2022) Virtual

Workshop (12-14 April 2023),

CM Spring 2024

Platform Operation

Scoping and beginning to plan IAEA/Vienna, Hybrid

CM Summer 2024

Spin-off Coordinated Projects

Ad-hoc planning meetings on

18 May, NHSI Ind Track call

CM Autumn 2024 (TBD), Virtual (TBD) need basis

NHSI plenary, 27 June 2023

Final TG2 meeting, end of 2024

Recurring meetings (TBD)

First Working Meeting

10-11 July CM 2023, Hybrid (TBD) - Spin-offs

What else (TBD)

(February 2023 CM -date

14-15 Sept CM 2023, Hybrid

Technical Meeting, 11-15

Meetings on need basis for CONTACT: Mr. Pekka based on Doodle poll) Virtual December 2023 (nominations) different Topic 2 activities PYY, P.T.Pyy@iaea.org 11

TG2 - Where to find the material?

IAEA Nuclear Supply Chain Management:

Management of the nuclear supply chain l IAEA Webinars:

Nuclear Supply Chain Webinar Series l IAEA NHSI TG2 in IAEA NUCLEUS CONNECT MSN/MSCQ:

Now restricted to TG2 Members - We will make material available to MSCQ members by the Technical Meeting on the Harmonization and Use of Industrial Codes and Standards for Small Modular Reactors in December 2023 How to become a member of NUCLEUS CONNECT MSCQ (formerly MSN)?

MSCQ Registration (iaea.org) 12

Thank you for your attention 13

C&S conformance approaches

1. Comply with all the legislative, regulatory and owners requirements in the jurisdiction you are targetting (complete fit-for-purpose tailoring)

2. Enveloping approach - develop a set of project requirements conforming with the set of most demanding requirements (platinum grade approach)

3. Justification approach - develop a set of project requirements conforming with a set of requirements seen to comply with the levels required with reasonable assurance (standardized design with exemptions sought by justifying C&S with code case equivalences)

4. Regional approach - develop a set of project requirements conforming with a set of requirements seen to comply with the regional C&S ecosystem (standardized design additional few national jurisdiction tailored solutions) - may be a specific case of 3

5. Standard design approach - no changes agreed in C&S (one fits all as conformance with safety and other objectives is sufficiently assured on the plant design level)

...and extensive use of proven serially manufactured commercial grade items, SI units, etc.

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Working Group on Codes and Standards

- Achievements and future perspective -

Sangmin Lee, NEA 2023 NRC Standards Forum 13 September 2023 NRC Headquarters, Rockville, MD, USA 15

Overview (1/2)

It is very important to prevent radiation disasters for public safety in the use of nuclear energy. Especially, pressure boundary components in nuclear power plants play a key role as a physical barrier against the release of radioactive materials. So, they should be designed to ensure their integrity based on consensus codes and standards

[Image sources: IAEA, google] 16

Overview (2/2)

Each regulatory body has its own requirements for ensuring the integrity of pressure boundary components Codes and standards developed by SDOs have similarities and differences between their design provisions Typical Codes & Standards ASME CSA JSME KEPIC PNAE RCC Cooperation among regulators, designers, manufacturers, SDO, etc. was found to be essential for nuclear safety through the works of MDEP and WGCS

SDO: Standard Development Organisation

MDEP: Multinational Design Evaluation Program

Mandate The mandate of the WGCS is to facilitate and promote international co-operation, convergence and reconciliation of codes, standards and regulatory requirements for pressure-boundary components in nuclear power plants in order to:

Improve the effectiveness and efficiency of

Design review and construction oversight

Operating NPP oversight

Enhance NPPs quality and safety

Support the ability of regulators to make decision on safety 18

Member countries Working Group on Codes and Standards (WGCS)

Chair - Dr. Sangmin LEE (KINS, Korea)

Vice-Chair - Dr. David RUDLAND (NRC, USA)

Technical Secretariat - Mr. Thomas BUCKENMEYER (NEA)

Member countries (15)

Canada, Czech Republic, Finland, France, Hungary, India, Japan, Korea, Mexico, Netherland, Russia(Suspended), Spain, Sweden, UK, USA Organisation (1) International Atomic Energy Agency Invitee (1) China Partners (2) SDO Convergence Board, WNA CORDEL 19

Discussion topics Construction stage of NPP Safety & Seismic Classification Design Manufacturing Installation Pre-service Inspection Integrity Issues Operation stage of NPP

- Carbon segregation

- Hydrogen flake In-service Inspection

- PWSCC Repair & Replacement Activities

- Embrittlement

- SCC Aging Management Obsolescence (3D Printing) 20

Brief meeting history Dec. 2018

1st WG meeting : The Bureau(Chair, Vice-Chair) was decided

~

2nd WG meeting : Three CAPS (Aging Mgmt, ISI, Safety Classif.) were prepared

43rd CNRA meeting : The CNRA approved three CAPS

3rd WG meeting : The CAPS activities were started 2020

4th WG meeting : Another CAPS (Material Mfg. Technique) was prepared

5th WG meeting COVID-19

45th CRNA meeting : The CNRA approved another CAPS

6th WG meeting Virtual meeting

7th WG meeting 2022

ISI workshop : About 150 participants attended the virtual workshop

47th CNRA meeting : The status of four CAPS activities was reported in-person

8th WG meeting

9th WG meeting : Two reports (ISI, Material Mfg. Technique) were prepared for submission

48th CNRA meeting : The CNRA approved two reports, and the AM workshop 2023

Aging Management (AM) workshop: About 100 participants attended in person

~

Activities (1/4)

In-Service Inspection

Lead: Mr. David RUDLAND (NRC, USA)

Objective/Scope

The ISI acceptance criteria and examination frequency vary even for identical components among international codes and standards

It is necessary to review and compare the ISI provisions in codes and standards

Output

An international ISI workshop was held in online format on 11-14 April 2022 with about 150 participants including utilities, SDOs, and regulators

- The different requirements of ISI from international codes and standards were discussed

The CNRA approved the workshop proceeding in December 2022

CNRA: Committee on Nuclear Regulatory Activities

Activities (2/4)

Qualification of Manufacturing Techniques

Lead: Ms. Laure MONIN (ASN, France), Mr. Martin LAMB (ONR, UK)

Objective/Scope

It is necessary to provide a guide for improving the process for qualifying existing and new material manufacturing techniques used for pressure boundary within codes and standards

Output

A consensus position (CP) report on the qualification of material manufacturing techniques was approved by the CNRA in December 2022

- This CP contains an example of technical processes with their critical criteria and the controls on parameters (e.g. manufacturing of large forgings) 23

Activities (3/4)

Safety Classification

Lead: Mr. Suqiang XU (CNSC, Canada)

Objective/Scope

To summarize classification criteria from member countries, identify potential issues, establish the best international practices, and harmonize safety classification schemes

Output

A summary report on a comparison of classification methodologies of member countries and recommendations on best practices is under review

Current Situation

A new Working Group on New Technology (WGNT) of the CNRA established a Task Group (TG) to complete this activity in June 2023

The TG is finalizing a draft of the summary report 24

Activities (4/4)

Aging Management

Lead: Ms. Sasaki HARUKO (NRA, Japan)

Objective/Scope

Engineering assessment of aging phenomena has drawn broad international attention in the nuclear industry

Expected Output (supported by the WGIAGE of the CSNI)

A summary report on the comparison between regulatory approaches to aging mgmt and its connection to codes and standards will be finalized

An international workshop was held in Japan on June 28-29, 2023 with about 100 participants including utilities, SDOs, and regulators

- The workshop proceeding will be prepared

WGIAGE: Working Group on Integrity and Ageing of Components and Structures

CSNI: Committee on the Safety of Nuclear Installations

Workshop on Aging Management

Date: June 28-29, 2023

Location: Hitotsubashi Hall, Chiyoda-ku, Tokyo, Japan

Audience: regulators, TSOs, international organizations, licensees, etc.

Speakers: regulators (WGCS members) and all stakeholders

Session 1: Comparison of national regulatory requirements related to aging phenomena on reactor coolant pressure boundary (RCPB)

Session 2: Discussion on industrial codes and standards on RCPB to address/prevent aging phenomena

Session 3: OPEX related to aging phenomena on RCPB

Session 4: Challenges of aging phenomena in C&S applied to SMRs/AMRs

Further information: www.oecd-nea.org > events 26

Future perspective

CNRA structure beyond 2022 CNRA Policy and Leadership and New Technologies Supply Chain Reactor Oversight Licensing Safety Culture Expert Group on

Materials and Mechanical Codes and Standards MMCS* Still under discussion

As of December 2022, WGCS activities have been closed under the new CNRA structure

International regulators are finding a new place to continue their activities from the point of view of mechanical codes and standards (C&S)

- The TG of the WGNT of the CNRA is taking over the activity of the WGCS regarding safety classification

- The WGIAGE of the CSNI is partially supporting activities of C&S

The SDOs may request the NEA to maintain discussion channels between the regulatory and industry sides for better mutual understanding of C&S

Thank you for your attention!

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ML23251A058

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