2.1 The Plant System I&C life-cycle
The plant system I&C life-cycle is detailed in PCDH [RD1], Section 3. This life-cycle includes the following phases for any procurement package:
- A design phase for definition of the technical requirements.
- A manufacturing phase which includes Factory Acceptance Tests (FAT) at supplier premises.
- An integration phase which comprises the following sub-phases:
- Installation on ITER site.
- Site Acceptance Tests (SAT) testing all procured plant systems connected together.
- Integrated commissioning to test of the complete plant system once it is functionally and physically integrated with the CENTRAL I&C infrastructure and other plant systems.
- Plant system operation.
In the ITER procurement model, a plant system is split into one or several procurement packages delivered as contributions in kind by DAs or purchased from IO suppliers. Following the plant system design phase, an approved design is agreed by DA and IO (in kind procurement only) and each procurement package follows its own life-cycle for phases 2 and 3a. Then the procurement package is tested as an integrated system at the time of the SAT.
As a general rule, I&C equipment (HW + SW) required to control the procurement package is included in a part of the procurement deliverables. Therefore PCDH requirements apply on this I&C equipment and shall be considered at FAT and SAT as a part of the approved design requirements. Therefore only PCDH requirements are considered in that document.
2.2 Plant system I&C integration model
The unit of integration into CODAC systems is the plant system I&C.
Several plant system I&Cs may be required to control a plant system and then several integration processes might be required to integrate a plant system in CODAC systems. See [SD1] for definition of the plant system I&C.
As a consequence of the ITER procurement model and also from the plant system I&C perspective it is necessary to also consider the unit of procurement (the PA) in the plant system I&C integration model. Therefore, the model of I&C integration starts at PA level and ends up at plant system I&C level.
The starting point of the integration is the completion of the Factory Acceptance Tests (FAT). From that point on, the ITER model for on-site testing applies, see [RD3] for further details. This model introduces the following sequence: site delivery – site reception – assembly – component tests – system tests – system commissioning – ITER integrated commissioning.
The Site Acceptance Test (SAT) is when IO decides whether to accept or reject the component on the basis of the test results. The SAT will be initiated at site reception and will terminate at system commissioning.
Note: the final acceptance by IO of the procurement package may require additional tests to be executed during ITER integrated commissioning (typically the case for performance tests and compliance with environmental conditions).
This document will focus on the procedures to be executed on the procurement package during the FAT and on plant system I&C during the SAT in order to integrate the plant system I&C with CODAC systems.