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International Cooperation in Development and Supply of Nuclear Fuel for Czech NPPs Vladimír Hlavinka Chief Production Officer «ATOMEXPO 2009» 27 th May.

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Presentation on theme: "International Cooperation in Development and Supply of Nuclear Fuel for Czech NPPs Vladimír Hlavinka Chief Production Officer «ATOMEXPO 2009» 27 th May."— Presentation transcript:

1 International Cooperation in Development and Supply of Nuclear Fuel for Czech NPPs Vladimír Hlavinka Chief Production Officer «ATOMEXPO 2009» 27 th May 2009

2 International Cooperation in the Nuclear Fuel for Czech NPPs 2 Czech NPPs Temelín  2x VVER 1000  type V-320 Dukovany  4x VVER 440  type V-213

3 International Cooperation in the Nuclear Fuel for Czech NPPs 3  The Czech Power Company (ČEZ) owns two NPP's :  Temelín  two reactor units - VVER 1000/320 (designed installed capacity 1,962 MWe)  the first unit went into trial operation in 2000, the second in 2002  both reactors are in regular operation, end of operation in 2040/2042  current projects - improvement on the secondary side ( ~ 1,020 MWe ) change of fuel supplier  Dukovany  four reactor units - VVER 440/213 (designed installed capacity 1,760 MWe)  the first unit went into operation in 1985, the last in 1987  assumed shut down in 2025/2027  current projects - uprating ( 500 MWe) - I&C modernization - Long Term Operation ( year 2035) Czech NPPs

4 International Cooperation in the Nuclear Fuel for Czech NPPs 4 I. Dukovany – Fuel Cycle  Nuclear Fuel purchase for Dukovany  procurement alternatives: 1.utilisation of the Czech mined uranium (DIAMO), rest of services supplied by the supplier 2.purchase of the fuel including all services

5 International Cooperation in the Nuclear Fuel for Czech NPPs 5 I. Dukovany – Fuel Cycle  fuel assembly:  core contains 349 hexagonal fuel assemblies  each assembly consists of 126 rods (~ 1 kg of uranium per rod)  assembly is enriched to average 4.38% 235 U (Gd-2M, working fuel assembly)  E110 (Zr-1%Nb) is used as a cladding material  manufactured by JSC “Mashinostroitelny zavod” (TVEL)  casks CASTOR 440/84 for spent fuel fabricated by GNS

6 International Cooperation in the Nuclear Fuel for Czech NPPs 6 I. Dukovany – Modernisation  original fuel cycle:  from the 80’s  12-month cycle with reload of 116 FAs (3-year cycle)  enrichment 1.6 %, 2.4% and 3.6%  burn-up up to 30,000 MWd/tU  modernised fuel cycles:  fuel with gadolinium absorber Gd-1 (2003) Gd-2M (2009)  12-month cycle with reload of 72 FAs (5-year cycle)  enrichment 4.25% and 4.38%  burn-up up to 55,000 MWd/tU

7 International Cooperation in the Nuclear Fuel for Czech NPPs 7 I. Dukovany – Modernisation  modernisation higher burn-up and decreasing number of fresh fuel assemblies

8 International Cooperation in the Nuclear Fuel for Czech NPPs 8 I. Dukovany – Modernisation  modernisation elongation of fuel cycle [EFPD]

9 International Cooperation in the Nuclear Fuel for Czech NPPs 9 II. Temelín – VVantage 6  fuel supplier WESTINGHOUSE:  assemblies manufactured in Columbia  Anatech’s technical expertises  uranium deliveries from all over the world including Czech Rep.  conversion services from CAMECO, Areva (COMURHEX)…  enrichment – USEC, Urenco, Areva (Cogema), Atomenergoprom… diversification strategy

10 International Cooperation in the Nuclear Fuel for Czech NPPs 10 II. Temelín – VVantage 6  fuel assembly:  core contains 163 hexagonal fuel assemblies  each assembly consists of 312 fuel rods (~ 1.6 kg of uranium)  max. allowed 235 U enrichment 4.95% (+0.05%)  ZIRLO TM is used as a cladding material  Average Reload Batch ~ 42 FA’s  casks CASTOR 1000/19 for spent fuel to be fabricated by GNS

11 International Cooperation in the Nuclear Fuel for Czech NPPs 11 II. Temelín – VVantage 6  VVantage 6  VVantage 6 mod. 1  minor modifications  VVantage 6 Phase 0  Top Nozzle and Guide Tube design changes (to allow higher Fuel Assembly growth and to provide stiffer skeleton in the dashpot area)  VVantage 6 Phase 1  Fuel Rods, Guide Tubes, Instrumentation Tubes material change, Zircaloy-4 → ZIRLO TM (to reduce growth, improvement of corrosion performance)  Stiffer skeleton (to reduce Fuel Assembly Bow)  Top Grid peripheral cell sizes tolerance changed (to reduce peripheral Fuel Rod Bow)  VVantage 6 Phase 1X  Vaneless Mid Grid material change, Zircaloy-4 → Alloy-718, top grid design used (to reduce Grid-to-Rod-Fretting) Phase 1 and Phase 1X changes were finally introduced together, however they are licensed as different fuel design

12 International Cooperation in the Nuclear Fuel for Czech NPPs 12 II. Temelín – VVantage 6  design changes fuel behaviour improvement, IRI elimination

13 International Cooperation in the Nuclear Fuel for Czech NPPs 13 II. Temelín – TVSA-T  Nuclear Fuel Contract with Westinghouse Electric Company for fuel fabrication to 2010 (last delivery)  Tender (BID) for New Fuel Supplier  WEC  TVEL  TVEL was awarded the contract  For period 2010 ÷ 2020  Currently TVSA-T Development Program is ongoing, first TVSA-T fuel delivery and in-core loading → summer 2010, Unit 1

14 International Cooperation in the Nuclear Fuel for Czech NPPs 14 II. Temelín – TVSA-T  development program  design reports  methodologies  licensing documentation (support in licensing process of TVSA-T, mixed core)  coordination of subcontractors (KIAE, OKBM, VNIINM)  tests, analyses (mechanical tests performed also by Škoda JS)  experience of operational at Unit 1 of Kalinin NPP  dummy assembly (instruction for handling)

15 International Cooperation in the Nuclear Fuel for Czech NPPs 15 III. International communication  With fuel supplier (Westinghouse, TVEL)  continual cooperation on fuel and fuel cycle improvement  development programs in case of new fuel design introduction (cooperation also with prominent Czech organizations, which provide ČEZ with independent analysis of various technical and licensing related issues - ÚJV, ŠJS, ÚJP,…)  Fuel manufacturing quality inspections, check and surveillance  ČEZ contracts independent organisations to inspect and supervise manufacturing process (Anatech, NAC Stoller, KPI)  Membership in international organizations  World Nuclear Association (WNA)  World Nuclear Fuel Market (WNFM)  World Association of Nuclear Operators  TUG

16 International Cooperation in the Nuclear Fuel for Czech NPPs 16 III. International communication  Cooperation with nuclear field oriented companies – ANT International, NAC International  ČEZ is a member of several groups and programs, which provide to ČEZ up-to-date nuclear field related information and trends, e.g. COPAG – Core Performance Assessment Group ZIRAT – Zirconium Alloy Technology Program


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