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Reliability Studies for the Joint European Torus (JET) experimental reactor


The Joint European Torus (JET) is an experimental nuclear fusion reactor, operated by Culham Centre for Fusion Energy (CCFE), at the United Kingdom Atomic Energy Authority (UKAEA) facility located in Oxfordshire, UK. The operation of JET is funded through the European Union’s Horizon 2020 Framework Programme for Research and Innovation, and managed via the EUROfusion consortium. JET was built in the early 1980s and has been operating since then, carrying out experiments and studies on fusion energy.

The JET machine is a large tokamak device of approximately 15 metres in diameter and 12 metres high. At the heart of the machine there is a toroidal vacuum vessel where plasmais confined by a magnetic field generated by large D-shaped coils surrounding the tokamak.

JET is capable of producing pulses of hydrogen plasmas with temperatures of millions of degrees. Obtaining such high temperatures requires powerful heating within a short period of time.
Each JET pulse consumes around 10 GJ of energy with the peak power requirements exceeding 1000 MW. This amount of power cannot be taken from the UK National Grid so two massive flywheel generators were constructed to supply the additional energy needs. The rotating part (rotor) of each generator is 9 metres in diameter and weighs 775 tons.

CCFE has been contracted to undertake a second Deuterium-Tritium fuelled Experiment (DTE2) using JET in 2017, in support of technical developments for the ITER project. In order to manage risks of delay or early project termination CCFE adopted a risk based inspection (RBI) process to identify the systems which could influence the successful delivery of DTE2 and in turn to identify by a risk assessment process those systems or components which require mitigating action in order to minimise those risks.

IDOM was appointed to provide engineering services for these studies, covering the various support systems that support operation of the reactor.


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