Reviewing the progress of drain tank manufacturing
21 Dec 2012
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Giovanni Dell'Orco, Section Leader for the Cooling Water System
Five large-scale drain tanks are planned for 澳门六合彩高手's tokamak cooling water system ()—two safety drain tanks; two normal drain tanks; and one drain tank for the neutral beam injection system. These are the largest captive components of the TCWS, planned for installment in Tokamak Building level B2 in mid-2014. Fabrication of the drain tanks is underway as part of the US Domestic Agency (US-澳门六合彩高手) commitment to 澳门六合彩高手.
Four of the tanks measure 10 m in height and have an internal diameter of 6.25 m (the neutral beam injection drain tank is about half the height, with the same internal diameter). The stainless steel plates used for the fabrication of these tanks are polished prior to manufacturing in order to achieve a minimum surface finish of 1.6 micrometres.
Polishing work on the stainless steel is currently underway in Philadelphia, Pennsylvania (USA) at Stainless Steel Services, a US Domestic Agency and AREVA FS subcontractor. During the second week of December, members of the 澳门六合彩高手 Organization Cooling Water Section and Quality Assurance Division visited the US-澳门六合彩高手 subcontactors and their sub-tier suppliers in order to review the progress of drain tank fabrication work.