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Prof. Dr. Haluk UTKU Institute of Nuclear Sciences Hacettepe University Ankara, Turkey

PRESSURIZED WATER REACTORS. Prof. Dr. Haluk UTKU Institute of Nuclear Sciences Hacettepe University Ankara, Turkey. GENERAL SYSTEM. March 27-28th, 2008, WORLD CONJUNCTURE IN NUCLEAR TECHNOLOGY: Generation III and III+ Nuclear Power Plants , Istanbul. REACTOR VESSEL.

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Prof. Dr. Haluk UTKU Institute of Nuclear Sciences Hacettepe University Ankara, Turkey

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  1. PRESSURIZED WATER REACTORS Prof. Dr. Haluk UTKU Institute of Nuclear Sciences Hacettepe University Ankara, Turkey

  2. GENERAL SYSTEM March 27-28th, 2008, WORLD CONJUNCTURE IN NUCLEAR TECHNOLOGY:Generation III and III+ Nuclear Power Plants, Istanbul

  3. REACTOR VESSEL 27-28 Mart 2008, NÜKLEER TEKNOLOJİDE DÜNYA KONJONKTÜRÜ: III. Ve III+ Nesil Nükleer Reaktörler Kongresi, İstanbul Picture: Mıtsubishi Heavy Industries

  4. Control Rod Drive Mechanism Vessel Head Control Rod Thimble Guide Rod Cluster Control Mechanism Coolant Outlet Coolant Inlet Nozzle Vessel Fuel Neutron Reflector REACTOR VESSEL Core Barrel March 27-28th, 2008, WORLD CONJUNCTURE IN NUCLEAR TECHNOLOGY:Generation III and III+ Nuclear Power Plants, Istanbul

  5. REACTOR CORE DIMENSIONS 27-28 Mart 2008, NÜKLEER TEKNOLOJİDE DÜNYA KONJONKTÜRÜ: III. Ve III+ Nesil Nükleer Reaktörler Kongresi, İstanbul

  6. Top Coolant Flow Nozzle Fuel Rods Control Rod Guides Instrumentation Guide at the Center Grid Filter Bottom Flow Nozzle FUEL Pictures: GE, Mitsubishi Heavy Ind., Westinghouse March 27-28th, 2008, WORLD CONJUNCTURE IN NUCLEAR TECHNOLOGY:Generation III and III+ Nuclear Power Plants, Istanbul

  7. FUEL * For a reactor with 193 fuel assambly there are 51000 fuel rods and approximately 18 million fuel pelets. 27-28 Mart 2008, NÜKLEER TEKNOLOJİDE DÜNYA KONJONKTÜRÜ: III. Ve III+ Nesil Nükleer Reaktörler Kongresi, İstanbul

  8. FUEL FAILURE RATES IN US PLANTS

  9. CONTRIBUTION OF FUEL CYCLE TO POWER GENERATION COST Natural Uranium and Processing (%2.6) Enrichment (%3.6) Production of Fuel Assembly (%2.6) %80 %20 Disposal (%11.2) March 27-28th, 2008, WORLD CONJUNCTURE IN NUCLEAR TECHNOLOGY:Generation III and III+ Nuclear Power Plants, Istanbul

  10. Pressurizer Steam Generator Coolant Pump Ractor Vessel REACTOR CORE COOLANT SYSTEM 27-28 Mart 2008, NÜKLEER TEKNOLOJİDE DÜNYA KONJONKTÜRÜ: III. Ve III+ Nesil Nükleer Reaktörler Kongresi, İstanbul

  11. Coolant Pump - Pressurizer Coolant Pump Pressurizer March 27-28th, 2008, WORLD CONJUNCTURE IN NUCLEAR TECHNOLOGY:Generation III and III+ Nuclear Power Plants, Istanbul

  12. STEAM GENERATORS • Recirculating Steam Generators: Westinghouse-USA; Mitsubishi Heavy Industries-Japan; Siemens-Kraftwerke-Germany; Babcock & Wilcox-Canada • Once-Through Steam Generator: Babcock & Wilcox, USA • Horizontally Placed Steam Generators: Zio, Atommash-Russian; Vitkovice-Check 27-28 Mart 2008, NÜKLEER TEKNOLOJİDE DÜNYA KONJONKTÜRÜ: III. Ve III+ Nesil Nükleer Reaktörler Kongresi, İstanbul

  13. Steam Outlet Steam Separators Feedwater Inlet Downcomer Annulus Tube Bundle Tube Supports Tube Sheet Primary Inlet Primary Outlet RECIRCULATING STEAM GENERATORS References: www.kntc.re.kr March 27-28th, 2008, WORLD CONJUNCTURE IN NUCLEAR TECHNOLOGY:Generation III and III+ Nuclear Power Plants, Istanbul

  14. Steam Generator To Turbine Perforated plates To Reactor From Reactor Reactor coolant flow tubesı ONCE-THROUGH AND HORIZONTAL STEAM GENERATORS Pressure 63 Atm. Feedwater Temp. 220-225 oC Moisture at the outlet 0.2%

  15. CONTAINMENT BUILDING Containment Design relies on calculating the peak containment pressure during potential accidents.The containment must withstand the pressure and temperature of Design Basis Accident without exceeding the design leakage rate of 0.2% volume/day for the 24 hours and 1% volume/day thereafter.Steel linen is used inside to protect from any gas diffusion. Applied Regulations: 10 CFR 50, Appendix A, General Design Criteria 52, 53 and 54 10 CFR 50, Appendix J 27-28 Mart 2008, NÜKLEER TEKNOLOJİDE DÜNYA KONJONKTÜRÜ: III. Ve III+ Nesil Nükleer Reaktörler Kongresi, İstanbul

  16. CONTAINMENT BUILDING Sandia National Laboratories, USA conducted a test of slamming a jet fighter into a large concrete block at 775 km/h airplane left a 6.4 cm deep gouge in the concrete. Although the block was not constructed like a containment building missle shield, the results were considered indicative. In another work EPRI, Electric Power Research Institute, conducted a aircraft crash impact analysis. Analysis showed that no parts of the aircraft entered the containment buildings. The robust containment structure was not breached (Boeing 767-400, weights 203 tons with full fuel, the wing span is 51.5 m.) March 27-28th, 2008, WORLD CONJUNCTURE IN NUCLEAR TECHNOLOGY:Generation III and III+ Nuclear Power Plants, Istanbul

  17. ENGINNERING SAFETY FEATURES • Decay heat removal system after shutdown • Residual heat removal system • Emergency core cooling cystem • Containment spray system • Radiation control systems • Systems to filter accumulated gas in the containment 27-28 Mart 2008, NÜKLEER TEKNOLOJİDE DÜNYA KONJONKTÜRÜ: III. Ve III+ Nesil Nükleer Reaktörler Kongresi, İstanbul

  18. THE REACTIVITY CONTRIBUTIONS OF DEVICES AND PHYSICAL PHENOMENON Relative deviation from the criticalitiy is called reactivity. 1. Shutdown Rods 2. Gray Rods 3. Dark Rods 4. Xenon 5. Fuel Temperature reactivity feedback 6. Moderator (Coolant) Temperature & boron reactivity feedback Note that reactivity is a computed parameter, and not a measured parameter. It is not directly available at an actual plant. March 27-28th, 2008, WORLD CONJUNCTURE IN NUCLEAR TECHNOLOGY:Generation III and III+ Nuclear Power Plants, Istanbul

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