Contribution of Industry to NPP Performances

Transcription

1 Nuclear power : Performance and long term operation Contribution of Industry to NPP Performances Dominique MOUILLOT CEO ONET Technologies WIN France Chairperson Contribution of Industry to NPP Performances Dominique MOUILLOT 1

2 INTRODUCTION Strict maintenance of the 58 reactors in service in France enhances their performance in various capacities: safety, security radioprotection environment friendliness availability The maintenance of the most dense nuclear reactor fleet worldwide is ensured by 10,000 EDF agents assisted by 20,000 employees from service contractors. With more than 1,400 employees seconded to the EDF sites, ONET TECHNOLOGIES is one of the major maintenance contributors for the French Nuclear Power Plants. Contribution of Industry to NPP Performances Dominique MOUILLOT 2

3 INTRODUCTION ONET TECHNOLOGIES is a major contributor to reactor performance and service life enhancement via two main drivers: On-site technological maintenance On-site transverse maintenance Contribution of Industry to NPP Performances Dominique MOUILLOT 3

4 MEETING EDF's EXPECTATIONS International partnerships: Mitsubishi Heavy Industries (MHI) Atomic Energy of Canada Limited (AECL) CCI / Sulzer LAINSA Contribution of Industry to NPP Performances Dominique MOUILLOT 4

5 ENHANCING PERFORMANCE Enhancing reactor performance and service life also involves: Preventive maintenance Equipment inspection and control High intervention responsiveness upon technical events Repair of main components Modification purporting to enhance the unit safety level and availability Replacement of main components at end of life Planning and implementation of transverse services for technical support Contribution of Industry to NPP Performances Dominique MOUILLOT 5

6 PREVENTIVE MAINTENANCE Steam generators: Preventive chemical leaching Initial problem scope: Steam Generator plate clogging and tube fouling causing an efficiency drop and a possible safety risk Adopted solution: Chemical leaching purporting to dissolve and drain out the magnetite Contribution of Industry to NPP Performances Dominique MOUILLOT 6

7 EQUIPMENT INSPECTION AND CONTROL Fuel: Video inspections Initial problem scope: Fuel assembly uplift when removing the upper internals Adopted solution: When refueling the lower internals, Video inspections of the fuel and measurement of interassembly gaps Contribution of Industry to NPP Performances Dominique MOUILLOT 7

8 EQUIPMENT INSPECTION AND CONTROL Turbines: Non-destructive testing of low pressure rotors Initial problem scope : Defects on the ringed shafts on turbine rotors Adopted solution : Ultrasonic inspection by TOFD process (Time Of Flight Diffraction) in order to determine crack positions and dimensioning Contribution of Industry to NPP Performances Dominique MOUILLOT 8

9 HIGH INTERVENTION RESPONSIVENESS UPON TECHNICAL EVENTS Refueling: Handling system deblocking Initial problem scope: On April 29, 2004, while refueling unit 3 at Paluel, the refueling machine's gripper hook remains blocked on one of the assemblies Adopted solution: Diver's intervention as close as possible to the assembly, while maintening full safety and security Contribution of Industry to NPP Performances Dominique MOUILLOT 9

10 REPAIR OF MAIN COMPONENTS Pressuriser: Heating stick replacement Initial problem scope: Replacement of damaged heating sticks on the pressuriser Adopted solution: Remote-operated intervention involving machining, automated welding and automated NDT solutions Contribution of Industry to NPP Performances Dominique MOUILLOT 10

11 MODIFICATIONS PURPORTING TO ENHANCE THE UNIT SAFETY LEVEL RIS-EAS recirculation sumps Initial problem scope: Modification of the RIS-EAS recirculation filters in order to increase the filtration surface area in case of safety injection or containment spraying Adopted solution: Based on the safety requirements, new filtration system design, manufacturing and installation on site Contribution of Industry to NPP Performances Dominique MOUILLOT 11

12 MODIFICATIONS PURPORTING TO ENHANCE THE UNIT AVAILABILITY Used fuel storage racks: replacement Initial problem scope: Replacement of used fuel storage racks in order to increase the storage capacity of the BK pools in the 900 MWe series Adopted solution: Installing racks ensuring a highest storage density in free standing Contribution of Industry to NPP Performances Dominique MOUILLOT 12

13 REMPLACEMENT OF MAIN COMPONENTS AT END OF LIFE Providing replacement Steam Generators Initial problem scope: Providing Steam Generators to replace the initially mounted SGs Adopted solution: Providing SGs in partnership with MHI and in keeping with the French design and construction rules Current progress: First trio delivered in January 2009 for the Le Blayais 1 unit and an other 4 trios under construction, to be delivered successively in 2011, 2013, 2014 and 2015 Contribution of Industry to NPP Performances Dominique MOUILLOT 13

14 PLANNING AND IMPLEMENTATION OF TECHNICAL SUPPORT AND WORKSITE ASSISTANCE The general Worksite Assistance services and the transverse Technical Support functions involve all required activities for: Nuclear logistics Accompanying; Radioprotection Handling and Lifting Helping; Facilitating. Decontamination Radiological waste control Conventional and radiological cleanliness Linen Chanel control. the maintenance operations Tooling stores and Radioprotection stores Contribution of Industry to NPP Performances Dominique MOUILLOT 14

15 PLANNING AND IMPLEMENTATION OF TECHNICAL SUPPORT AND WORKSITE ASSISTANCE ONET TECHNOLOGIES helps the nuclear operator achieve its major stakes to the highest extent: Enhancing Human Performance Achieving an Outstanding Condition of the Facilities Enhancing the Nuclear Fleet availability Adapting and Renewing Competences Enhancing the partnership quality between operator and service contractors Helping implement the SDIN* Nuclear Technical Information System *Système D Information Technique du Nucléaire Contribution of Industry to NPP Performances Dominique MOUILLOT 15

16 BOOSTING HUMAN PERFORMANCE The context Faulty Maintenance Quality, Occupational accidents, Significant safety events Significant radioprotection events Significant environmental events Originate from: HUMAN FACTOR The approach Analysis and integration of faint signals from human factors Personnel training to natural compliance with standard practices, to make professional gestures more reliable Contribution of Industry to NPP Performances Dominique MOUILLOT 16

17 THE HOUSE-KEEPING LEVERAGE EFFECT The context HOUSE-KEEPING = performance improvement lever on each site (safety, security, environment). A spirit of partnership induces a daily mutual emulation between the service contractor and the operator. The approach Strict Action Plans aimed at improving premises cleanliness Inter-site benchmarking Appointment of "Cleanliness advisors", Leakage resorption plans House-keeping inspections by supervisory officers and real-time treatment of discrepancies Contribution of Industry to NPP Performances Dominique MOUILLOT 17

18 IMPROVING NUCLEAR FLEETS AVAILABILITY The context Availability improvement is a major economic stake for the operator. Unit outage times can be shortened by: improving maintenance operation, ensuring suitable worksite preparation, providing efficient logistics around all these operations. The approach Integrating efficient logistics in the outage preparation and planning activities Active participation to the Unit Outage Operational Steering Center, COPAT* *Centre Opérationnel de Pilotage des Arrêts de Tranches Appointing "Directorates" in charge of following up, arbitrating, measuring performance levels and assigning common objectives. Contribution of Industry to NPP Performances Dominique MOUILLOT 18

19 ADAPTING AND RENEWING COMPETENCES The context Trade evolution: operating requirements nuclear logistics work engineering Implementing a specific know-how (core competences, ad-oc training) Nuclear Rebirth lack of skilled manpower The approach Qualified technicians, planners into the nuclear logistics trade. Specific training plans, professional experience paths, heavy investments. Contribution to the creation of a dedicated nuclear school path within the French educational system. Contribution of Industry to NPP Performances Dominique MOUILLOT 19

20 STRENGTHENING THE OPERATOR-CONTRACTOR PARTNERSHIP The context Sharing stakes between operator and contractors is a key factor for reaching the objectives. EDF relies on contractors for a significant part of the power plant maintenance operations The approach Progress Charter between EDF and the Professional Organizations MOPIA* Project (Implementing an Attractive Industrial Policy) *Mettre en Œuvre une Politique Industrielle Attractive Crossed path agreements Common training sessions ("Académie des Encadrants") Contribution of Industry to NPP Performances Dominique MOUILLOT 20

21 The context Large number of IT applications on the sites, EDF decided to standardize all operating and maintenance aid tools. HELPING IMPLEMENT THE SDIN* (NUCLEAR TECHNICAL INFORMATION SYSTEM) The contractors are implicitly impacted by this approach *SYSTÈME D INFORMATION TECHNIQUE DU NUCLEAIRE The approach Large-scale national project: 2 years of design, deployment on all sites in 4 years. ONET TECHNOLOGIES is associated with EDF so that the specific requirements and features of our trades be taken into account in software design Contribution of Industry to NPP Performances Dominique MOUILLOT 21

22 A HUMAN RESOURCE DIMENSION IN OUR APPROACHES Our difference : Junior employee tutorship Senior recruitment Tailor-made career plans Contribution of Industry to NPP Performances Dominique MOUILLOT 22

23 CONCLUSION Our driving force: proximity with all women and men within the organization and our clients Thank you for your attention Contribution of Industry to NPP Performances Dominique MOUILLOT 23