IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- IAEA Safety
Reports Series n° 86 “Safety
Aspects of NPP in Human Induced External Events: General Consideration – issued in 2017. This Report gives the general framework of
methods to be implemented for the design and evaluation of nuclear
facilities subjected to extreme human induced external events.
- IAEA Safety
Reports Series n° 88 “Safety
Aspects of NPP in Human Induced External Events: Margin Assessment – issued in 2017. The objective of this safety Report is to
provide detailed methodology and procedures for assessing the safety
margins of nuclear power plants against human induced events of either the
postulated type or accidental type.
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IAEA TSO Forum
ITER contribution to:
- TEC DOC on “Technical and Scientific Support
Organizations (TSOs) providing support to regulatory functions''- January 2018
This TECDOC is intended
to serve as a reference publication on TSOs to better describe the core
characteristics and functions of a TSO supporting regulatory bodies.
This publication
describes the general characteristics, organizational aspects and types of
services provided by TSOs to support regulatory functions and infrastructure in
the Member States. This TECDOC provides a description, including common core
values and characteristics, of TSOs in countries where the regulatory
infrastructure is well established, and it focuses largely on nuclear safety
issues.
- TEC DOC on “Technical
and Scientific Support Organizations (TSOs) and their Services provided in
Support to Regulatory Functions”, Final Draft (February 2017)
The TEC DOC is
intended to report on general characteristics, organizational aspects and types
of services provided by TSOs to support regulatory functions in the Member
States.
This document will
serve as a reference publication on TSOs. It will help to develop convergent
understandings on the matter at international level. It covers
all types of support for safety issues that may be provided to a Regulatory
Body to carry out its statutory functions, which require technical and
scientific expertise in the nuclear and radiation protection field. The support
is applicable to all facilities and activities, for civilian use, that give
rise to radiation risks as defined in IAEA Safety Standard Fundamental Safety
Principles, Safety Fundamentals No. SF-1. Currently this TEC DOC is ready in
its Final Draft.
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IAEA TSO Forum
ITER contribution to:
- Safety Guides Working DS472
– “Organization, Management and Staffing of a Regulatory Body”, draft 2015
This Safety Guide covers the
organizational and managerial aspects of Regulatory Bodies, which are of
fundamental importance for the performance of the regulatory core functions in
all circumstances, thus promoting a more consistent approach to organizational
aspects and to resources management. This will allow the Regulatory Body to
have an integrated and overall view of facilities and activities. In
particular, this is to be ensured not only by the technical dimensions, but
also by the cultural, organizational and individual aspects (Human and
Organizational Factors), supporting strong regulatory effectiveness,
supplemented by a questioning attitude and self-reflection on its own culture
and on the influences on the authorized parties.
The scope of this Safety Guide
is limited to the regulation of radiation and nuclear safety and does not
extend to nuclear security. However, it does identify where security measures
are relevant for safety purposes.
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IAEA TSO Forum
ITER contribution to:
- Safety Guides Working
DS473– “Regulatory Body Functions and Processes “, draft 2015
The Safety
Guide covers the core regulatory functions, and how they are discharged, during
all the phases of the lifecycle of a facility or activity from initial design
through to the release from regulatory control by means of associated licensing
processes. However, in line with the graded approach, the regulatory control
and recommendations described will not be applicable to all facilities and
activities and will differ according to the lifecycle stage: even where
applicable, the depth and scope will vary.
The scope of this Safety Guide is limited to the
regulation of radiation and nuclear safety and does not extend to nuclear
security. However, it does identify where security measures are relevant for
safety purposes.

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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- TECDOC on “Safety Communication on Siting of Nuclear
Facilities against External Hazards”, draft 2014
The document provides on how to establish an effective communication,
which contributes to support the shift from one way to two way, interactive and
long-term process of communication with the public as well as it provides
information about the measures taken by nuclear energy stakeholders of a
nuclear national programme to ensure the safety of the public and the
environment, while harnessing the benefits of nuclear power (risk-benefit
evaluation).
Moreover, a risk communication approach identifies the public concerns;
and addresses these concerns, emotions and reactions to work with the media by
answering their demands and provide information in a non- technical language.
It also identifies all stakeholders and affected parties and calls for keeping
them informed about the safety of nuclear facilities, the regulatory control
activities and related findings. Moreover, the risk communication approach
assists in building a bridge between technical experts and the public and
maintain social confidence ensuring transparency and to facilitate the decision
making process by clear, timely, factual and continuous information to the
public.
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IAEA Safety Standards
ITER contribution to:
- General Safety
Guide n° GSG 4 on:“Use of External
Experts by the Regulatory Body”. Published in 2013
This Safety Guide provides recommendations and guidance on meeting the
requirements of IAEA Safety Standards Series No. GSR Part 1 on obtaining expert
advice or services for the regulatory body.
It informs the regulatory body on the process it should use to determine
the need for external expert advice, and the processes and procedures for
identifying a suitable support provider and making contractual arrangements for
the work. It also provides recommendations and guidance on how the regulatory
body should take the advice of external experts into account while still
retaining responsibility in making its decisions.
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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- Safety Report on
“Assessment Of External Flooding (Excluding Tsunami) And High Wind Hazards In
Site Evaluation For Nuclear Installations – 2014
The objective
of the Safety Report is to detail the state of the art methodologies and
provide recent case studies that will be used for the evaluation of
meteorological and hydrological hazards as the supporting document of SSG-18.
The scope of
the Safety Report is the assessment of external flooding (excluding tsunami)
and high wind hazards for the purposes of site evaluation for existing and
prospective nuclear installations.
The covered
aspects for the evaluation of external flooding (excluding tsunami) and high
wind hazards.
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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- Safety Report on
“External Hazard Considerations For Single And Multi-Unit Probabilistic Safety
Assessment” – 2014
The objective
of the safety report, External Event Probabilistic Safety Assessment is to
outline the generic methodology for probabilistic safety assessment of NPP
against external natural hazards, which integrate design, procedural,
operational, human factor, and both protection and mitigation aspects that are
essential to understand a NPP response to an external hazard.
The
methodology would be suitable for PSA of one unit against one hazard. Some
aspects of external event PSA such as identification and initial screening of
hazards are also applicable to multi-unit sites.
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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- Safety Report
“Technical Approach To Multi-Unit Probabilistic Safety Assessment (Mupsa)” – 2014
The scope of
the present safety report includes a review of the lessons learned about
multi-unit site safety evaluations from existing studies and from operating
experience with multi-unit sites.
The focus of
this review is to identify the technical issues that need to be addressed in an
integrated site safety evaluation and to propose solutions to these issues that
can be derived from the existing work.
An overall approach to performing a site safety evaluation is described
as well as detailed guidance on performing the necessary steps to implementing
the approach.
The scope of
the report includes a definition of the risk metrics that can be used and
suggestions for how associated risk acceptance criteria may be developed.
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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- Document - Seismic Probabilistic Safety Assessment
Implementation Guideline - 2013
The
main purpose of this report is to provide implementation guidance for conducting
Seismic Probabilistic Safety Assessment (SPSA) for existing nuclear
installations in a manner consistent with IAEA Safety Standard NS-G-2.13 and
internationally recognized practice.
The
scope of this report covers the SPSA to be performed on existing nuclear power
plant so as to ensure that the required basic safety functions are available
during and after seismic events that may exceed seismic design basis.
SPSA
should be developed as described in NS-G-2.13 and in accordance with applicable
regulatory requirements (such as the requirement for periodic safety review)
and observing sound international practice.
Seismic
PSA programmes at existing operating plants are plant specific and regulatory
specific. This report is meant to provide practical implementation guidance for
internal knowledgeable PSA practitioners in order to develop SPSA on the basis
of existing Internal Events PSA.
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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- Document - Methodologies for Seismic Safety
Evaluation of Existing Nuclear Installations - 2013
The scope of this
report covers the seismic safety evaluation programmes to be performed on
existing nuclear installations so as to ensure that the required basic safety
functions are available, with particular application to the safe shutdown of
reactors. Nuclear Installations, according to IAEA Glossary, include:
- Land based, stationary nuclear power plantsand research reactors;
- Nuclear
fuel cycle facilities, including but not limited to enrichment plants,
processing plants, independent spent fuel storage facilities and reprocessing
plants.
Seismic
safety evaluation programmes should be developed as described in NS-G-2.13 and
in accordance with applicable regulatory requirements (such as the requirement
for periodic safety review).
Evaluation
programmes at existing operating plants are plant specific or regulatory
specific.
This
report is meant to define the minimum generic requirements and may need to be
supplemented on a plant specific basis to consider particular aspects of the
original design basis.
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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- Document
- Draft Technical Report on Seismic isolation of nuclear installations - 2013
The objective of this TECDOC is to:
- Provide
technical basis to revise safety guides for new design and re-evaluation of
operating facilities in order to include seismic isolation
- Assemble technical basis to cover design, risk or margin evaluation, manufacture,
construction and operation activities
- Propose basic requirements for base-isolated structures focusing on design, seismic
risk assessment, construction and operation.
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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- IAEA Safety Reports Series DD1139 “Safety Aspects of
NPP against Human Induced External Events:
General Consideration – draft 2013
This Report gives the general framework and it
includes a roadmap on how to perform the design and the evaluation of the protection
against human induced external hazards.
It concentrates on an overall view of the methodology
and on the important conditions in its application to existing and new nuclear
power plants.
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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- IAEA Safety Reports Series DD1087 “Engineering Aspects
of NPP against Human Induced External Events: Assessment of Structures” – draft
2012
This Report gives detailed guidelines for the safety
assessment of NPP structures against mechanical impact, explosion and fire
hazards caused by human induced external events. It covers the characterization
of loading, the assessment of structural integrity using both simplified
methods and more elaborated methodologies, and the assessment of induced
vibration. Acceptance criteria are given in the report for different failure
modes: overall stability, overall bending and shear, local failure modes and induced
vibrations.
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IAEA - International
Seismic Safety Centre (ISSC)
ITER contribution to:
- IAEA Safety Reports Series DD1086 “Engineering Aspects
of NPP against Human Induced External Events: Margin Assessment” – draft 2012
The report describes the procedures for assessing the margins of nuclearpower plants against human induced external hazards. Both postulated and
accidental hazards are considered. It focuses on plant and systems performance
evaluations.
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IAEA - International
Seismic Safety Centre (ISSC)
IAEA - International
Seismic Safety Centre (ISSC) – KARISMA Benchmark
- ITER Final report on: ‘’ Seismic Safety Of Existing
Nuclear Power Plants, KAshiwazaki-Kariwa
Research Initiative for Seismic Margin Assessment’’- Published in
2012
The report contains the contribution of ITER-Consult to the benchmark,
with specific reference to the activities requested in Task 1- Structural
benchmark. Analyses have been developed
to study the soil response, using ground motion records provided by Tokyo
Electric Power Company (TEPCO). Response spectra have been evaluated at free
surface and at specific depths using aftershock and main shock data. Maximum
spectral accelerations of about 4.8 g have been calculated during the main
shock.
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IAEA Safety Standards
ITER contribution to:
- Specific Safety Guide n° SSG -28 “Commissioning for Nuclear
Power Plants” – Draft in 2012
This Safety Guide deals
with the commissioning of land based stationary thermal nuclear power plants of
all types. It makes recommendations on how to meet the requirements on the
commissioning programme; organization and management; testing and review
procedures; and the interfaces between organizations involved in the
commissioning activities, including the regulatory body. It also deals with the
control of changes in the commissioning programme and with the documentation
required for and produced in commissioning.
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ITER Preliminary Report
on “Fukushima Daiichi Nuclear Accident first
considerations”, 2011
This report has been
prepared with the aim to provide background information about the Fukushima 1
NPP and report on the main aspects of the accident: the initiator seismic event
and consequent tsunami, the evolution of the accident, its management and
the radiological impact. A number of preliminary considerations are
elaborated to contribute to the process to learn from the Fukushima accident.
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- IAEA
- "Safety
Guide on Seismic Hazards"
- (No.
SSG-9 )
The Specific Safety Guide NO.
SSG-9 “Seismic Hazards in Site
Evaluation for Nuclear Installations”
has been published by IAEA in October
2010. It provides recommendations and
guidance on evaluating seismic hazards
at a nuclear installation site and, in
particular, on how to determine:
(a)
the vibratory ground motion hazards, in
order to establish the design basis
ground motions and other relevant
parameters for both new and existing
nuclear installations;
(b)
the potential for fault displacement and
the rate of fault displacement that
could affect the feasibility of the site
or the safe operation of the
installation at that site.
ITER-Consul
has contributed to the preparation of
the guide.
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IAEA
-
Safety
Infrastructure
-
"Draft Safety
Guide DS 424 "
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The
objective of this Safety
Infrastructure Guide (Draft
DS424) is to provide guidance
on the establishment of a
nuclear safety infrastructure,
when embarking on a nuclear
program, in accordance with the
IAEA safety standards.
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It
proposes a road-map of 200
safety-related actions to be taken from
the beginning of development of the
infrastructure up to commissioning of
the NPP
The
Safety Guide is structured in accordance
with the IAEA safety standards and
comprises 20 chapters, each of which
being linked to IAEA safety requirements
with identification of the phase in
which the requirement should be
implemented and corresponding IAEA
Safety Standard.
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International Technical Meeting
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"Seismic
Safety of Nuclear Power Plants "
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OUTCOMES
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An International Technical Meeting
with focus on ‘’Seismic Safety of
Nuclear Power Plants’’ has been held
in Tivoli (Italy) on March 25-26,
2010 with the objective to exchange
views and discuss the topic of
seismic safety of NPPs based on
international in-progress studies,
research activity, lessons learned
from experience, current design and
regulatory practices.
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It was organized by ITER-Consult,
CIRTEN, ENEA, ‘’La Sapienza’’ and
AIN with the support of IAEA and
under the auspices of the Ministry
of Economical Development of Italy.
The participating organization
included IAEA, ISPRA, ITER, ENEA,
Ansaldo, Areva, JNES, IRSN, CIRTEN,
‘’La Sapienza’’.
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The presentations and the
discussion covered the following
topics: seismic hazard and site
specificity, seismic design approach
and methodology, design margins,
seismic safety requirements and
regulatory guidance, lessons learned
from the experience.
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It was recognized that significant
steps forward have been made in the
last years on each of the topics in
terms of advanced technical and
scientific knowledge, new
achievements and new approaches. The
discussion gave the opportunity to
consolidate some relevant outcomes.
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"National Nuclear Infrastructure and Institutional Capacity"
- INTRODUCTORY NOTES
The book is referred to the course carried out in the frame of
the initiative taken by the Italian presidency of the G8 Nuclear
Safety and Security Group (NSSG) to promote an effective
cooperation among institutions, academic communities and
organizations in order to strengthen the Education & Training
and the sharing of best practices for a safe and secure
development of a nuclear programme.Undertaking a nuclear power
programme is a major commitment requiring, among others, to
fully and adequately address the issue of ensuring nuclear Safety,
Security and Safeguards (3Ss) which are
prerequisite for a high level of nuclear safety. The focus of
the course is the development of institutional infrastructure:
the legal and regulatory framework, the definition of roles and
the establishment of appropriate regulatory role, functions and
responsibilities. The course is organized under the auspices of:
the Italian Ministry of Foreign Affairs, the Italian Presidency
of G8, the EU, the IAEA and the University of Palermo. After an
introductory basis, the requirements associated to the process
of developing nuclear infrastructure, including lessons learned
from experience, are presented and discussed. The aim is to
provide the attendees with a comprehensive view of the key
aspects of the process to develop national nuclear
infrastructure, to familiarize with requirements for
establishing the legal and regulatory framework in compliance
with international legal instruments and get an insight into the
regulatory role, function and capability.
Publication
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