wenra - nucleus · 04 safetyreference levels srl 05 benchmarking 06 national action plan ... •...

International Conference on Effective Nuclear Regulatory Systems

Ottawa, 9 April 2013

Hans Wanner, WENRA Chairman

WENRAHarmonisation of safetyrequirements by self-commitment, mutual benchmarking and control

Harmonisation of safety requirements by self-commitment, mutual benchmarking and control / Hans Wanner, Chairman

01 The origins of WENRA

02 WENRA Working Group on Waste and Decommissioning WGWD

03 Self commitment

04 Safety Reference Levels SRL

05 Benchmarking

06 National Action Plan

07 Conclusions

ContentsInternational Conference on Effective Nuclear Regulatory SystemsOttawa, 9 April 2013

2

01WENRA

3 Harmonisation of safety requirements by self-commitment, mutual benchmarking and control / Hans Wanner, Chairman

• Association of the Heads of Nuclear Regulatory Authorities of the

EU countries with NPP and Switzerland

• Original Terms of Reference signed on 4 February 1999

• Revised on 14 March 2003

• Revised on 26 March 2010

www.wenra.org

01 WENRABasic facts


01 WENRABasic facts

5

17 Members

9 Observers


RHWG Reactor Harmonisation

Working Group

WGWD Working Group on

Waste and Decommissioning

Ad-hoc Working Groups

01 WENRA

6

Working Groups


02WENRA Working Group on Waste and Decommissioning WGWD


02 WENRA WGWD

8

History and status of WGWD work


Originally

Harmonisation of requirements in the field of radioactive waste and spent

fuel storage and decommissionning

2008

Safety Referency Levels for radioactive waste disposal facilities

Members

Senior experts and Heads of unit responsible for elaborating the

regulatory system in their respective countries

02 WENRA WGWD

9

Scope


UmbrellaDocument

Disposal

Decommis-sioning

Conditioning

Storage

03Self Commitment


03 Self Commitment

11

WENRA Policy Statements


• Commitment to continuous improvement of nuclear safety

• Nuclear safety and radiation protection are the prime responsibility of the

operator

• Common approach to nuclear safety

03 Self Commitment

12

Harmonisation process


WGWD

Elaboration ofSafety Ref.

Levels

WGWD

Elaboration ofSafety Ref.

Levels

Regulators

Self-assessment of

Compliance

Regulators

Self-assessment of

Compliance

WGWD

Benchmarking Validation

WGWD

Benchmarking Validation

Regulators

Elaboration ofNational

Action Plan

Regulators

Elaboration ofNational

Action Plan

WGWD

Benchmarking of National Action Plan

WGWD

Benchmarking of National Action Plan

Adapted national

regulatory system

in compliance with

SRLs

04Safety Reference Levels SRL


04 Safety Reference Levels

14

Elaboration


SRL are in general based on IAEA standards

WENRA SRL (waste and SF storage) IAEA SF-1; para 3.16

The licensee shall carry out at regular

intervals a review of the safety of the

facility (PSR). The review shall be made

periodically, at a frequency which shall be

established by the national regulatory

framework (e. g. every ten years).

The process of safety assessment for facilities

and activities is repeated in whole or in part as

necessary later in the conduct of operations in

order to take into account changed

circumstances (such as the application of new

standards or scientific and technological

developments), the feedback of operating

experience, modifications and the effects of

ageing. For operations that continue over long

periods of time, assessments are reviewed and

repeated as necessary. Continuation of such

operations is subject to these reassessments

demonstrating to the satisfaction of the

regulatory body that the safety measures

remain adequate. (SF-1; para 3.16)

04 Safety Reference Levels

15

Disposal Report


Safety Area Safety Issue

Safety Management Responsibility

Organizational structure

Management System

Site characterization and disposal

facility development

General Requirements

Site characterization

Design

Information gathering and monitoring

Construction

Operation

Record and knowledge keeping

Decommissioning and closure of disposal facility

Post-closure phase and release from regulatory control

Waste acceptance Derivation of waste acceptance criteria

Revision of waste acceptance criteria

Safety verification Scope and content of safety case

Operational and post-closure safety assessment

Periodic safety review (PSR)

05Benchmarking


05 Benchmarking

17

Of Regulatory Systems


Common benchmarking and validation of national self-assessment

Assessment

• Groups of 4 to 5 countries

• Notation codes to indicate compliance with SRL:

o A (Full compliance)

o B (A difference exists, but justified from safety viewpoint)

o C (Non compliance, to be addressed for harmonisation)

05 Benchmarking

18

Decommissioning: SRL implementation


05 Benchmarking

19

Decommissioning: SRL implementation


05 Benchmarking

20

Decommissioning: “C“ ratings



SR

L im

ple

me

nta

tio

nin

re

gu

lati

on

05 BenchmarkingSpent Fuel Storage: Regulation/Facilities

SR

L im

ple

me

nta

tio

nin

S

F s

tora

ge

faci

liti

es

06National Action Plan



23

Implementing SRL in national regulations


• Incorporation of SRL or missing parts thereof in national ordinances

and regulatory guides

• Target duration of implementation: 3 years

• Implementation in regulations and facilities


24

Monitoring of implementation


• Periodical reporting of progress of SRL implementation at WGWD

meetings

• Experience feedback on update of regulations

• Ensuring non-divergence of interpretations

After completion of National Action Plan: re-benchmarking by WGWD

� Full compliance reached

07Conclusions



• Storage – decommissioning – disposal: Holistic approach to

reach overall consistency

• Successful stepwise harmonisation process with feedback loops

• Full implementation of SRL through National Action Plans

planned within 3 years after completion of SRL report

• SRL implementation in storage facilities further advanced than

in regulations

• Key to success: WGWD participants are high-level experts

07 Conclusions

WENRA

Hans Wanner

Industriestrasse 19

5200 Brugg

Switzerland

Thank you

Tel +41 56 460 85 68

Fax +41 56 460 84 99

[email protected]

www.wenra.org

RHWG

REACTOR HARMONISATION

WORKING GROUP

WGWD

WORKING GROUP ON WASTE

AND DECOMISSIONING

WENRA SRL

28

RHWG Issues


A Safety Policy

B Operating Organisation

C Management System

D Training and Authorization of NPP staff

E Design Basis Envelope for Existing Reactors

F Design Extension of Existing Reactors

G Safety Classification of Structures, Systems and Components

H Operational Limits and Conditions

I Ageing Management

J System for Investigation of Events and Operational Experience Feedback

K Maintenance, In-service inspection and Functional Testing

LM Emergency Operating Procedures and Severe Accident Management Guidelines

N Contents and updating of Safety Analysis Report

O Probabilistic Safety Analysis

P Periodic Safety Reviews

Q Plant Modifications

R On-site Emergency Prepardness

S Protection against Internal Fires

Issues

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