Quality control of FWC during assembly and commissioning in SST-1 Tokamak

10th Asia Plasma and Fusion Association Conference

Patel, Hitesh^1 ; Santra, Prosenjit^1 ; Parekh, Tejas^1 ; Biswas, Prabal^1 ; Jayswal, Snehal^1 ; Chauhan, Pradeep^1 ; Paravastu, Yuvakiran^1 ; George, Siju^1 ; Semwal, Pratibha^1 ; Thankey, Prashant^1 ; Ramesh, Gattu^1 ; Prakash, Arun^1 ; Dhanani, Kalpesh^1 ; Raval, D.C.^1 ; Khan, Ziauddin^1 ; Pradhan, Subrata^1

Institute for Plasma Research, Near Indira Bridge, Bhat, Gandhinagar

382428, India^1

关键词: Assembly process;    Dimensional tolerance;    Electrical continuity;    Electrical isolation;    Hydraulic connection;    Quality control aspects;    Support structures;    Tightening torque;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/823/1/012067/pdf
DOI  :  10.1088/1742-6596/823/1/012067

来源: IOP

【 摘 要 】

First Wall Components (FWC) of SST-1 tokamak, which are in the immediate vicinity of plasma, comprises of limiters, divertors, baffles, passive stabilizers designed to operate long duration (∼1000 s) discharges of elongated plasma. All FWC consist of copper alloy heat sink modules with SS cooling tubes brazed onto it, graphite tiles acting as armour material facing the plasma, and are mounted to the vacuum vessels with suitable Inconel support structures at inter-connected ring & port locations. The FWC are very recently assembled and commissioned successfully inside the vacuum vessel of SST-1 undergoing a rigorous quality control and checks at every stage of the assembly process. This paper will present the quality control aspects and checks of FWC from commencement of assembly procedure, namely material test reports, leak testing of high temperature baked components, assembled dimensional tolerances, leak testing of all welded joints, graphite tile tightening torques, electrical continuity and electrical isolation of passive stabilizers from vacuum vessel, baking and cooling hydraulic connections inside vacuum vessel.