29th Symposium on Fusion Technology (SOFT 2016)

P1.007 Mechanical design solution for cold water basin of ITER Heat rejection system

5 Sep 2016, 14:20

1h 40m

Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Board: 7

Poster A. Experimental Fusion Devices and Supporting Facilities P1 Poster session

Speaker

Dinesh Gupta (Cooling water system group)

Description

ITER is an experimental fusion reactor being constructed in south of France which will demonstrate the scientific and technological capability in the direction of future commercial fusion power plant. The enormous amount of heat generated from the experimental reactor (mainly from the In-vessel components of Tokamak and its auxiliary systems) shall be removed by the Primary, Secondary and Tertiary cooling systems respectively. The Primary Heat transfer Systems (PHTS) receive heat from core components of fusion reactor and reject heat to the Secondary heat transfer systems which is in turn removed by the Tertiary cooling system, also identified as Heat Rejection System (HRS). The HRS finally rejects heat to the atmosphere. The heat rejection system is designed to remove a peak heat load of approximately 1100 MW with the help of a cooling tower with a capacity of approximately 510 MW, cold water and hot water basins, vertical turbine pumps and interconnected piping. The cold water basin serves a dual purpose. It provides the main support to the cooling tower (comprising of 10 cells each of 16m square FRP construction) and also contains a large body of water, having a capacity of 10000 cubic meters. The cold water basin which accommodates set of vertical turbine pumps submerged in the water, is designed economically to suit the site requirement within the limited space available as a site constraint. The purpose of this paper is to describe the practical mechanical design solution for the ITER cooling tower cold water basin, initiated during the preliminary design phase after considering site and cost constraints and the need for a reliable and environmentally friendly design. This paper also reveals the challenges in carrying out general arrangement and layout design and describes the viable mechanical design solution for the cold water basin of Heat rejection system.