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Tokamak Cooling Water System ORNL US ITER Project Tokamak Cooling Water System Presented to ITER PROJECT 1st INFORMATION FORUM Kirby Wilcher Cooling Water.

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Presentation on theme: "Tokamak Cooling Water System ORNL US ITER Project Tokamak Cooling Water System Presented to ITER PROJECT 1st INFORMATION FORUM Kirby Wilcher Cooling Water."— Presentation transcript:

1 Tokamak Cooling Water System ORNL US ITER Project Tokamak Cooling Water System Presented to ITER PROJECT 1st INFORMATION FORUM Kirby Wilcher Cooling Water Systems Engineer November 15, 2006

2 Tokamak Cooling Water SystemORNL 2 Tokamak Cooling Water System Team Jan Berry WBS Manager Karen McElhaney System Engineer Kirby Wilcher System Engineer Robyn Rose Project Controls Jan Berry WBS Manager

3 Tokamak Cooling Water SystemORNL 3 Cooling Water System Scope based on 2001 Design CWS Consists of 4 Systems – Tokamak Cooling Water System (TCWS) – Component Cooling Water System (CCWS) – Chilled Water System (CHWS) – Heat Rejection System (HRS)

4 Tokamak Cooling Water SystemORNL 4 US Scope Physical Boundary of TCWS

5 Tokamak Cooling Water SystemORNL 5 Tokamak Cooling Water System TCWS Consists of 7 Sub-systems – Primary Heat Transfer System (PHTS) Primary First Wall & Blanket (PFW/BLK) Diverter/Limiter (DIV/LIM) Vacuum Vessel (VV) Neutral Beam Injector (NB) – Chemical and Volume Control System (CVCS) – Drain and Refilling Systems – Drying System

6 Tokamak Cooling Water SystemORNL 6 Primary Heat Transfer from In-Vessel Components Fabricated by Sub-System First Wall & Blanket (WBS ) and Neutral Beam Injector (WBS ) : – Upper Pipe Chase – Vault Diverter/Limiter (WBS ) : – Lower Pipe Chase – Upper Pipe Chase – Vault Vacuum Vessel (WBS ) : – Lower Pipe Chase – Upper Pipe Chase – Roof PHTS

7 Tokamak Cooling Water SystemORNL 7 1 GW Heat Removal Required by PHTS; Various Operating Modes Primary Heat Transfer System (PHTS) Operating Mode Conditions First Wall and Blanket Pulse: Thermal load (MW) Inlet temperature (°C) Inlet Pressure (MPa) Baking: Inlet temperature (°C) Inlet Pressure (MPa) ~ (212 o F) 3.0 (435 psi) 240 (464 o F) 4.4 (638 psi) Diverter and Limiter Pulse: Thermal load (MW) Inlet temperature (°C) Inlet Pressure (MPa) Baking: Inlet temperature (°C) Inlet Pressure (MPa) (212 o F) 4.2 (609 psi) 240 (464 o F) 4.4 (638 psi) Vacuum Vessel Pulse: Thermal load (MW) Inlet temperature (°C) Inlet Pressure (MPa) Baking: Inlet temperature (°C) Inlet Pressure (MPa) Decay heat removal: Heat load to Vacuum Vessel (MW) (212 o F) 1.8 (261 psi) 200 (392 o F) 2.4 (348 psi) 0.8 (peak) Neutral Beam Injector Low voltage: Thermal load (MW) Inlet temperature (°C) High voltage: Thermal load (MW) Inlet temperature (°C) 100 <80 (176 o F) (86 o F)

8 Tokamak Cooling Water SystemORNL 8 Chemical and Volume Control System; PFW/BLK

9 Tokamak Cooling Water SystemORNL 9 Chemical and Volume Control System; Various Operating Modes Operational state or mode Plasma Operation State Baking Decontamination Mode Volumetric Flow Rate (at inlet)45 m 3 /h (198 gpm) 90 m 3 /h (396 gpm) Feed Coolant Temp.148°C (298 o F)240°C (464 o F)100°C (212 o F) Return Coolant Temp.120°C (248 o F)190°C (374 o F)83°C (181 o F) Feed Coolant Pressure1.7 MPa (247 psi)4.3 MPa (624 psi)1.7 MPa (247 psi) Return Coolant Pressure3.4 MPa (493 psi)4.6 MPa (667 psi)3.4 MPa (493 psi)

10 Tokamak Cooling Water SystemORNL 10 Drain and Refilling Systems; DIV/LIM

11 Tokamak Cooling Water SystemORNL 11 Drain and Refilling Systems; Various Operating Modes SystemNumber of drain tanks * Total internal volume (m 3 ) PFW/BLK PHTS2 (1)~ 500 (~132,000 gal) DIV/LIM PHTS2 (1)~ 200 (~52,800 gal) VV PHTS2~ 120 (~31,700 gal) NB injectors PHTS2 (2)~ 120 (~31,700 gal) * number of tanks in parentheses indicates those used for drainage following an in-vessel coolant leak

12 Tokamak Cooling Water SystemORNL 12 Drying System

13 Tokamak Cooling Water SystemORNL 13 Drying System; Various Operating Modes Blow-out modeHeat-up modeDry-out mode FluidNitrogen Nitrogen + H 2 O (steam) Fluid Inlet Temp.40°C (104°F)210°C (410°F) Fluid Outlet Temp.40°C (104°F)160°C (320°F) Fluid Inlet Pressure4.0 MPa (580 psi)2.1 MPa (305 psi)0.6 MPa (87 psi)

14 Tokamak Cooling Water SystemORNL 14 New Cost Share Agreement Simplifies Interfaces with Participant Teams Initial cost share agreement divided responsibility by location (inside vault/outside vault) New agreement divides responsibility by activity: – US no longer responsible for installation – US responsible for materials, components, and shipping Increases US responsibility for fabrication Pre-fabrication reduces overall ITER cost – IO responsible for engineering, on-site assembly and testing US ITER is contributing engineering

15 Tokamak Cooling Water SystemORNL 15 Seven Sub-Systems Distributed Throughout Tokamak Building Primary Heat Transfer: Vault Upper Pipe Chase Roof Lower Pipe Chase Support Systems: Draining and Refilling (WBS ) Chemical and Volume Control System (WBS ) Drying (WBS )

16 Tokamak Cooling Water SystemORNL 16 Requirements Under Review Vendors Must Be Able to Comply with US and EU Codes & Standards – American Society of Mechanical Engineers Standards – Pressure Equipment Directive (European Union Directive) – ESPN (French Order on Nuclear Pressure Equipment) Nuclear vs. Non-nuclear Classification of TCWS Components to be Determined by ITER and French Regulatory Authorities Applicable Codes & Standards Still Under Review Materials of Construction: – 304L/316L Stainless Steel

17 Tokamak Cooling Water SystemORNL 17 Component Delivery by 2014

18 Tokamak Cooling Water SystemORNL 18 Additional Information Additional information available at: General Information ITER Technical Basis

19 Tokamak Cooling Water System ORNL US ITER Project Backup Information Detailed Preliminary Schedule and Milestones

20 Tokamak Cooling Water SystemORNL 20 Preliminary Schedule

21 Tokamak Cooling Water SystemORNL 21 Preliminary Schedule (Cont.)

22 Tokamak Cooling Water SystemORNL 22 Systems Integration Preliminary Schedule and Milestones

23 Tokamak Cooling Water SystemORNL 23 First Wall and Blanket Preliminary Schedule and Milestones

24 Tokamak Cooling Water SystemORNL 24 Divertor/Limiter Preliminary Schedule and Milestones

25 Tokamak Cooling Water SystemORNL 25 Vacuum Vessel Preliminary Schedule and Milestones

26 Tokamak Cooling Water SystemORNL 26 Neutral Beam Injector Preliminary Schedule and Milestones

27 Tokamak Cooling Water SystemORNL 27 Chemical and Volume Control System May 2013

28 Tokamak Cooling Water SystemORNL 28 Draining and Refilling ScheduleJune 2010

29 Tokamak Cooling Water SystemORNL 29 Drying System ScheduleOctober 2013


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