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GDF SUEZ / Electrabel approach of
the Long Term Operation (LTO)project
in Belgium
Challenges & actual status
CONFIDENTIAL
L
Pierre DOUMONT
Group Senior Vice-prsident
Nuclear Safety & Radiation Protection
NTW
Exploratory Workshop
European Parliament
Brussels
March 19, 2014
Ageing of nuclear power plants
a threat for nuclear safety ?Control methods accross Europe and
recent developments for measuring the risk
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1. Positioning Tihange 1 & Doel 1-2
2. Regulatory context
3. Electrabel approach for the preparation of LTO files
4. Scope and organisation of LTO for Unit 1 of Tihange NPP
5. Planning and resources for its implementation
6. Conclusions
AGENDA
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3
Nuclear Power in Belgium
Doel
Tihange
3
NTW Exploratory Workshop European Parliament Brussels March 19, 2014
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Units Netcapacity
[MWe]
Date of 1stcriticality
Design Cumulativenet load
factor [%]
LTOrelevant
?
Doel 1 433 1974 Westinghouse 85.1 YES
Doel 2 433 1975 Westinghouse 82.1 YES
Doel 3 1006 1982 Framatome 84.0
Doel 4 985 1985 Westinghouse 83.6
Tihange 1 962 1975 Framatome 79.0 YES
Tihange 2 1008 1982 Framatome 85.8
Tihange 3 1015 1985 Westinghouse 86.64
The nuclear fleet of GDF SUEZ
NTW Exploratory Workshop European Parliament Brussels March 19, 2014
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5
12
3
4
1. Doel 1 - 433 MW
2. Doel 2 - 433 MW
3. Doel 3 - 1006 MW
4. Doel 4 - 1008 MW
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1. Tihange 1 - 962 MW
2. Tihange 2 - 1008 MW
3. Tihange 3 - 1015 MW
1
2
3
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1. Positioning Tihange 1 and Doel 1&2
2. Regulatory context
3. Electrabel approach for the preparation of LTO files
4. Scope and organisation of LTO for Unit 1 of Tihange NPP
5. Planning and resources for its implementation
6. Conclusions
AGENDA
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Regulatory context to operate the Belgiannuclear units
The Belgian units are in constant evolutionthrough the mandatory process of decennialsafety reviews (Periodic Safety Reviews)and Electrabel policy of continuousimprovement.This PSR concerns as well the design as theoperational conditions of the plants.
The plant itself has no technical definedlifetime.Some components have a limited lifetime,but most are replaceable (e.g. steam
generators).
Regulatory context : Periodic Safety Reviews (P.S.R.)
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Regulatory context : Belgian Nuclear Phase Law
Nuclear phase out law
o Until 2003, the only regulatory limit on the lifetime was the
compulsory decennial review
o In July 2012, the government announced its intention to extentthe lifetime of the Tihange 1 NPP to 50 years, to assureelectricity supply, while the closure of Doel 1 and 2 after 40
years was confirmed.
o In March 2014, official autorisation to extent the lifetime of theTihange 1 NPP.
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In 2009 : Preparation of the LTO file based on one Strategic Note issuedby the Belgian Nuclear Safety Authorities :
Preconditions
Ageing
Design
Knowledge & Competence Management & Behavior
In 2011 : Submission of LTO-file: Re-evaluation of the design : proposal for design upgrades and related planning Ageing management : documentation compliant with 10 CFR 54
In 2012 : Final definition ofAgreed Design Upgrade (ADU)
In 2015 : a) Revision or supplement of the Safety Analysis report
(including ageing management, LTO-actions)
b) Full implementation of ageing management program
< 2020 : Realization of design modifications (Agreed Design Upgrade)
Regulatory context :Strategic Note from Nuclear Safety Authorities
Physical Ageing
Technological
Obsolescence
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1. Positioning Tihange 1 and Doel 1&2
2. Regulatory context
3. Electrabel approach for the preparation of LTO files
4. Scope and organisation of LTO for Unit 1 of Tihange NPP
5. Planning and resources for its implementation
6. Conclusions
AGENDA
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Electrabel approach : Preconditions
LTO-preconditions
Plant programmes Managementsystem
SafetyanalysisTLAA*
Licensingbasisdocuments
Maintenance
Equipmentqualification
Surveillanceand monitoring
Chemistryprograms
In serviceinspection
Configuration
management
(*) : TLAA : Time Limited Ageing AnalysisNTW Exploratory Workshop European Parliament Brussels March 19, 2014
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Electrabel approach : PreconditionsInterpretation of IAEA expectations
LTO report LTO action plans LTO period
Ageing managementaction plans
Preconditionsaction plans
2011 2012 2013 2014 2015
Ready for LTO
2016
LevelofLTO-readiness
Continuous
improvement
AS-IS situation
TO-BE
LTO effort
Evaluation of
currentpreconditions
AS-IS
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Electrabel approach :Ageing
Scoping Screening
Ageing
ManagementReview (AMR)
Condition
Assessment(CA)
Defining AgeingManagement Programs (AMPs)
Standard AME
EstablishingTime Limited Ageing Analysis (TLAA)
Ageing
ManagementProgram Review
(AMP Review)
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Electrabel approach : Design
LTO-DESIGN: Sources for design upgrade
(a) Regulation watch
(b) WENRA reference levels
(c) Benchmarks
(d) PSR look-back
(e) Operational experience feedback
(f) Design basis documentation
Other information sources
for design re-evaluation
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Process for design upgrade :From Safety Concerns up to Agreed Design Upgrade (ADU)
Weighing safetyconcernclusters
Identifying &clustering
safety concerns
Screeningsafety concern
clusters
Identifying &weighing
risk factors
FOR EACH SOURCE
START
Investigatingpotential
improvements
to safetyconcerns
Globalassessment
of potentialimprovements
ADU
EVALUATION MATRIX
1 2 3 4
Electrabel approach : Design
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Benchmark
Periodic SafetyReviews
OperationalExperienceFeedback
Design BasisDocumentation
WENRA
RegulationWatch
Fukushima
Safetyconcerns
Potentialimprovements
Globalassessment
Fukushima
ADU
Fukushima
Electrabel approach : Design
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Electrabel approach :Knowledge, Competence and Behaviour
Approach alignedwith LTO
preconditionapproach
Nuclear safety culture
OSART
Knowledge management
Self assessments
Work groups
Competencemanagement
OSART
Self assessments
Work groups
Specifying scopeof assessment
Identifyingand listingapplicableprocedures
Listing andevaluating
tools
Definingevaluationcriteria andframework
Assessing
1 2 3 4 5
Reporting
7
Definingactionplans
6
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Conclusions on LTO files
A utility point of view on the justification for safe long term operation :
- The LTO file is an opportunity for a complete and systematic
approach of the physical ageing, based on internationalreferences
- The LTO file is also an opportunity for reflections and fordeveloping a clear strategy to tackle the technological
obsolescence
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1. Positioning Tihange 1 and Doel 1&2
2. Regulatory context
3. Electrabel approach for the preparation of LTO files
4. Scope and organisation of LTO for Unit 1 of Tihange NPP
5. Planning and resources for its implementation
6. Conclusions
AGENDA
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Scope of LTO for Tihange 1
837 commitments bundled in 103 projects
Knowledge, Competences
and Behaviour : 2
Design : 12 Preconditions: 9
Mechanicalsystems : 22
Mechanicalstructures : 3
Civil works : 5
E I & C: 50
The scope of LTO concerns 103 projects
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1. Positioning Tihange 1 and Doel 1&2
2. Regulatory context
3. Electrabel approach for the preparation of LTO files
4. Scope and organisation of LTO for Unit 1 of Tihange NPP
5. Planning and resources for its implementation
6. Conclusions
AGENDA
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LTO-Planning
P
l
a
n
n
in
g
NuclearSafety
ALARA
RadiationProtection
Assuringsafetyduringworks
Risk ofcommon
modefailure
Time forstudies
anddelivery
Time forequipmentqualification
MilestonesStrategic
Note
Availabiltyof skilledpersonnel
Technicalrisks and
complexities
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LTO-Planning: outage planningSound and reasonable proposal for planning
Planning supports global safety. Planning is no goal by itself !
Planning based on unavailability of electric power supplies(NB : two redundant systems at Tihange 1).
Ageing mainly spread over outages of 2014 and 2016,both extended by 3 weeks (one complete system per outage)
Realize design upgrade gradually, not all at once, but do notpostpone actions with large impact on safety
Improvements gradually from now on until outage of 2019,extended by 4 weeks (Ultimate Extended Backup System)
Avoid common mode failure at any priceDont do everything during only one outage
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1. Positioning Tihange 1 and Doel 1&2
2. Regulatory context
3. Electrabel approach for the preparation of LTO files
4. Scope and organisation of LTO for Unit 1 of Tihange NPP
5. Planning and resources for its implementation
6. Conclusions
AGENDA
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LTO PROJECT: CONCLUSIONS
Official GO has been given recently by the Belgian government
Main challenge : Huge organisation requesting large resources
(internal as well as external) during a limited period, without
impairing further safe operation of all units of the concerned plant
External assessment requested through AIEA SALTO missions
(Preliminary mission, at the licensee request, occurred end of 2012 ;
Official mission, at Safety Authorities request, is planned for begin 2015)
Final approval for LTO over next 10 years will be part of the fourth
Periodical Safety Review of Unit 1 of Tihange.
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Thank you for your attention !