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Tokamak Cooling Water System - Drying System: Condenser, Economizer, Aftercooler and Knock-Out Pots – Design and fabrication

Type:  Industrial Equipment

The Drying System (DYS) provides removal of remaining water from the Tokamak Cooling Water System (TCWS) that cannot be gravity drained and provides gas baking of the divertor cassettes. The DYS should be (a) capable to dry the in-vessel components of the client systems in preparation for periodic leak testing, maintenance or component replacement; (b) able to blow-out (where required) and dry Integrated Blanket/ELM/Divertor (IBED) Primary Heat Transfer System (PHTS), Neutral Beam Injectors (NBI) PHTS and Vacuum Vessel (VV) PHTS loops; (c) able to provide hot nitrogen for gas baking of the divertor cassettes; (d) capable to provide the primary confinement for small amounts of activated corrosion products and tritium during drying operations.

The DYS Chilled Water System-cooled (CHWS) Condenser is a welded shell-and-plate heat exchanger with flange closure that condenses water vapor present in nitrogen gas before sending condensate to drain tanks via a DYS Condensate Pot or Knock-Out Pot. The DYS Knock-Out Pot is a tank that receives condensate from the DYS CHWS Condenser and prevents exposure of drain tanks to high DYS pressure. The DYS Economizer is a welded shell-and-plate heat exchanger with flange closure that recovers energy from the hot nitrogen gas returning from the in-vessel components during heat-up, dry-out, and gas baking modes. The DYS Condensate Pot or Knock-Out Pot is a tank that receives condensate from the DYS Economizer and prevents exposure of drain tanks to high DYS pressure. The DYS After cooler is a welded shell-and-plate heat exchanger with flange closure that cools nitrogen gas from the Drying Compressor and aides cooling during cool down. All these pieces of equipment are subject to Pressure Equipment Directive (PED).

WBS: 1.2.1

RFP Projected Date:

Projected Award Date:

$ Estimate: >$1M

Point of Contact:
Barbara Shaw

Last Updated: March 13, 2019 - 10:42 am