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ITER update.

Electrical Systems

The Chinese Domestic Agency (CN-DA) signed two important contracts on 21 December 2011 with domestic suppliers for the procurement of electrical systems for ITER. The contracts respectively cover the design and internal integration for AC/DC converters and the design and integration for Reactive Power Compensation (RPC) and Harmonic Filtering (HF).

Remote Handling

The European Domestic Agency has signed a contract to receive engineering support over the next four years in the field of remote handling with OTL, Assystem UK and CCFE for a budget in the range of EUR 3.5 million. Mechanical, electrical, electronic and control systems engineering linked to remote handling systems and components will be covered by the contract.

Cryolines

The ITER cryolines are a system of complex, multi-process, vacuum-insulated pipes ranging from 2 to 8 process pipes that connect cryogenic components in the Cryoplant and Tokamak buildings--some 3.5 kilometres in all. They form part of the ITER cryogenic system, comprising the cryoplant, the cryodistribution system and a system of cryogenic lines and manifolds. The main function of this cryodistribution system is to provide helium at 4.5 K and 80 K to the machine's superconducting magnet system, the thermal shields and the cryo vacuum pumps.

On 30 January the Procurement Arrangement for the delivery of the cryolines system was signed by the Indian Domestic Agency with the ITER Organization. ITER India has complete responsibility for the procurement, installation and performance of cold acceptance tests for the ITER cryolines. In order to validate the design and manufacturing of this complex system, a prototype test has been proposed by the Domestic Agency, which will be carried out on a short length 1:1 scale model. A dedicated laboratory for performing the tests is under construction at the Institute of Plasma Research (1PR) in Gandhinagar.

The two companies that have pre-qualified to participate in the tendering and manufacturing of the cryolines are M/s. Air Liquide Advanced Technologies from France and the consortium made up by M/s. INOX India Ltd., India and M/s. A S Scientific Products, UK. The companies had already participated in the design of the prototype.

Superconductor

The performance degradation problem that was found in a conductor for ITERfs Central Solenoid last year seems to be solved. As part of a comprehensive R&D program that was launched following unsatisfactory test results, a new conductor was fabricated; recent tests performed at the SULTAN Test Facility in Switzerland show good results. The new conductor sample was submitted to 10,000 magnetic load cycles and two warm-up / cool-down cycles, mimicking one-sixth of the full operational life of ITERrs Central Solenoid. "Compared to the tests performed last year, the conductor now shows a level of degradation much closer to that originally anticipated in the design, and the rate of degradation with magnetic cycling is stabilizing," explains Neil Mitchell, head of ITER'S Magnet Division.

Vacuum Vessel

An important milestone was achieved in February for the Korean Domestic Agency. Following the selection of Hyundai Heavy Industries in January 2010 as manufacturer for the Korean section of the ITER vacuum vessel and ports, and the completion of manufacturing design late 2011, cutting has begun on the ITER-grade stainless steel plate for the vacuum vessel. On 13 February, in the presence of quality assurance experts and engineers from the Korean Domestic Agency, the first cutting operation for vacuum vessel sector #6 was performed by HHI subcontractor Busan Waterjet.

Neutral Beam Test Facility

A ceremony was held in Padua, Italy on Monday 27 February for the launching of the PRIMA Neutral Beam Test Facility. In order to heat fuel to the 200-3 00[degrees]C temperature range required for fusion, ITER will be equipped with three powerful heating systems: 33MW of neutral beams; 20MW of electron cyclotron; and 20MW of ion cyclotron.

For more information on ITER progress, visit the ITER newsiine site at http://www.iter.oru/newsline
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Publication:Fusion Power Report
Date:Mar 1, 2012
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