The roles of Design Authority and Responsible Designer · The roles of Design Authority and Responsible Designer ... EDF Nuclear Engineering Department ‐IAEA Tech Meeting On Design

The roles of Design Authority and Responsible Designer

EDF Experience in France and in the United Kingdom

3rd Nov. 2014

EDF Nuclear Engineering Department ‐ IAEA Tech Meeting On Design Authority

1- Design Authority and Responsible Designers for EDF Nuclear fleet in France

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EDF Nuclear fleet in France

EDF Nuclear Engineering Department ‐ IAEA Tech Meeting On Design Authority3

58 Pressurized Water Reactors (PWR): 63 GWe

Three standardized series: => a major safety and economic benefit 900 MW: 34 units, 31 GW 1300 MW: 20 units, 26 GW 1500 MW (N4): 4 units, 6 GW

EDF is architect engineer / constructor and operator of the French nuclear fleet• safety and transparency as a major priority • average operation time: 28 years (12 to 36 years) • Experience feedback: ~ 1600 reactor years • Periodic 10 years Safety Reassessment process==> Long term operation: goal up to 60 years

EPR under construction: Flamanville 3

Decommissioning program: 9 reactors (6 GGR, Brennilis, SFR Creys Malville, PWR Chooz A)

2013 : 403,7 TWh

EDF - Engineering and Production Division

Group Senior Executive Vice President, Generation

Hervé MACHENAUD

Senior Vice President, Génération

Dominique MINIERE

NuclearOperations

63GWe20000 E

DPNPhilippe

SASSEIGNE

NuclearEngineering

6000 E

DINJean-Marc

MIRAUCOURT

Nuclear Fuel

DCNSylvain

GRANGER

HydropowerEngineering

& Generation

20GWe5000 EDPIH

Jean-François ASTOLFI

FossilEngineering

& Generation

12 GWe

DPITMichel

TOURNIER

IndustrialSupport

DAIPYves CORRE


Management of safety in EDF

DPN, as the operating organization and licensee, is responsible for nuclear safety of the NPPs under operation,

DIN, designated as design organization, is responsible for ensuring that the design meets all applicable safety requirements throughout the lifetime of the plantsIn particular for maintaining the necessary engineering expertise and technical knowledge of the design and of the design modifications.


DIN


Direction of DIN

Nuclear Director Engineering

Jean-Marc MIRAUCOURTSenior Vice President

Dominique LAGARDE

Transverse functions and operational supports :

RH, management, industrial policy, communication, safety-safety-RP,

international relations , I.T ,and directors of project

CIPNNuclear island :

engineering support for theexisting fleet

CIDENDecommissioning

and Environment

SEPTENDesign

expertise,safety

studies, conceptual

design for new models

CEIDRENon-

destructive tests,

Expertise of materials,

chemistry and manufacturing

inspections

CNENNew reactors :

project management and nuclear

island

CNEPEConventional

island :new reactors

and engineering

support for the existing

fleet

Profile

6 Units

~ 6,000 Employees

75 % engineers

More than 2,000 personnel hired within 5 last years

The missions of Nuclear Engineering Division (DIN)


Technical and industrial expertise and new reactor model designPreparing for the future : Gen3 and Gen4 nuclear power plantsCompetitiveness, industrial feasibility, monitoring of technological development & lobbyingIndustrial strategy

Building new nuclear power stations and new projects EPR in France and in other countriesProjects for new construction worldwide

Providing support for existing fleet and long term operationEngineering studies and engineering teams on site Replacing heavy components: main electrical generators, transformers, steam generatorsRe-assessing reactor ‘s safety every ten years ; fuel studies; climate impact and seismic studies

Decommissioning power stationsDeveloping industrial strategies, defining technical methods and decommissioning costs, complete decommissioning of 9 reactors currently in progress

LIFE

CYC

LE

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Nuclear production of EDF in FranceEDF as operator is responsible for safety and cost of its plants

Need to fully understand and master technically the designNeed to incorporate into the design the feedback of operating experience and specific utility requirements at the design stage and throughout the lifetime of the plant

EDF as Architect-EngineerDoes not buy turn-key plantsSpecify overall technical requirements (safety, functional, performance, manufacturing, …) and cascade them through adequate contractual allotmentRelies on some Responsible Designers (RD) (NSSS, CI, I&C,…) and is the overall RD (integration) Review detailed studies and control products, components, works delivered by the RDsResponsible of the safety demonstration of the plantResponsible of the design changes

EDF performs every ten years Periodic Safety ReviewsReview of the plant conformity to the current regulations and safety requirementsEnhance the safety of the plant with implementation of design changes based on experience feedback, lessons learned from national and global events, knowledge acquired from the R&D


Current challenges for the Nuclear Engineering Division

Three major work leadsExtensive fleet-wide upgrade programme

o Average age of 28 years for our nuclear fleet (in 2014). o The first generation of reactors, will soon be 40 years old (in 2019).o Maintain the performance and extend the life span of the French nuclear fleet

beyond 40 years of operation.Nuclear new build and preparation for the futureo Bring to completion EPR projects underway : Flamanville (Taishan as back office

for the future 30% operator and licensee) ,and in preparation (UK)o Optimize cost and delays for next models

Successful decommissioning of nuclear power plantso Complete decommissioning of permanently shut down plants in optimal

conditions of nuclear and environmental safety, on budget and on schedule.


Design Authority in EDF for the French fleet

DIN is accountable for design changes and configuration managementAll design changes which may impact safety are submitted to the Safety Authority SAR and relevant engineering and operating documentation are updated accordinglyPlant state and relevant documentation are maintained consistentNon compliances are reported and corrected

DIN ensures fleet conformance to safety issuesThrough generic design modifications resulting from safety reviews and analysis of generic safety events/issues (TMI, Forsmark, Blayais, post Fukushima,…)

Relations with original designers are continuously maintainedBut Vendors are challenged DIN keep a deep knowledge of the design and can judge propositions and optimize costs.

Design Authority is within DIN (Nuclear Engineering Division)Being mainly executed at the SEPTEN level with the support of engineering centers (CIPN, CNEPE, CEIDRE, CIDEN, CEIDRE) and of Nuclear Operating Division But not formally identified as a separate body in the organization’s governance.



2 - Design Authority and Responsible Designers for the HPC Project in the UK

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The Hinkley-Point C Project

EDF is planning to construct a nuclear power station in Somerset (UK) on the south side of the Severn EstuaryHinkley Point C will have two reactors (3300 MWe) and be based on the EPR design used by the nuclear power station Flamanville 3, FranceMilestones achieved :

The Generic Design Assessmentwas successfully completed in Dec. 2012The site has now been licensed by the Regulator and the Development Consents Order was granted in March 2013

The design is ongoing, preconstruction on site has started and construction is scheduled to beginin 2015 for a duration of approx. 70 months



A Simplified Comparison: France to UK

French Structure

DIN DPN

EDF-SA

Other suppliersAreva

ASN

UK EPR Structure

EANNB GenCo

EDF-Energy

EDF SA

DINONR

Suppliers

France UKFrance

Blue box shows licensee company

Areva

Other shareholders

Other suppliers

EDF Energy New Nuclear approach

NNB adopted the INSAG 19 modelNNB created a ‘Design Authority capability’ It has coverage of all aspects of the design and safety case

Systems, Studies/Methods/Safety CaseTo act as the Intelligent Customer for the design and the safety case

NNB ‘has appointed’ DIN as the overall Responsible DesignerNNB Design Authority is involved in DIN processes to exert the control required to agree the right changes to the design


The role of the Design Authority In NNB

Sets / Accepts codes/standards/methods underpinning safety caseManages development of the safety caseMaintain technical understanding of the design and ensure design is compliant with HPC safety caseReviews design (activities or deliverables) according to nuclear safety significanceEnsure that the design details and design substantiation is documentedProvide advice on Operating Guidelines, EOPs, SAMGs and any operational/maintenance issues that impact on design assumptions,Leads interactions with the Regulators on design aspects


Intelligent Customer (IC)

Licensee Requirement : NNB has to remain accountable for the safety of its activities and over all the life cycleTo be accountable, NNB must at all times be in control of activities, even when these are done by contractors working on its behalfTechnical IC control activities of design primarily undertaken within the Design Authority, but it’s more generally an NNB role

Defining the nuclear safety significance of the workSpecifying the work (of agreeing the specification)Assessing and selecting the contractor (working with EDF)Oversight of work in progressAccepting completed work

It applies to all activities that can affect nuclear safety, radiological safety, or the security of nuclear materialsNNB has been building sufficient internal knowledge to be able to play this roleNNB faces the regulators with DIN in support


Designer


Relationship between the DA and others entities

NNB GenCo

Overall Responsible

Designer – DIN

Regulatory Authorities

intelligent Customer role

Design Authority

Operation

AREVA Responsible

Designer

DesignerOther Responsible

Designer

DA and IC roles started during UK EPR Generic Design Assessment (GDA)

GDA granted on the 13th December 2012 (valid for 10 years)66 months of project teamwork between EDF / AREVA as a joint Requesting Party 56000 days of engineering analysis & technical justification were invested as well as the Regulators’ assessment effort of 29000 days 82 approved design changes (CMFs) from the Flamanville 3 (FA3) 2008 design reference. Some to be detailed further by the HPC Project684 Assessment Findings raised by regulators and tied to future construction project milestonesDA took a lead role when the project had to face the regulators during the close out period

Now organisation is in place in NNB and DINA Contract between NNB and DIN is in preparation to host the role of “overall Responsible Designer” (NEC contract)European Commission has approved the “Contract for Difference”We are expecting shareholder agreement signature and Final Investment Decision….


Conclusions

Design Authority and Responsible Designers are key roles to fulfill for a safe and responsible nuclear operatorThese roles are not formally satisfied in the same way in France and in the UK But the is responsibilities of the operator are the same :

Ensure that the design meets all applicable safety requirements throughout the lifetime of the plantMaintain the necessary engineering expertise and technical knowledge of the design to be able to control the design modification process in an industrial way during all the life of the plant



Thank you

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The roles of Design Authority and Responsible Designer · The roles of Design Authority and Responsible Designer ... EDF Nuclear Engineering Department ‐IAEA Tech Meeting On Design