MITICA Operating States

This document specifies in detail the MITICAoperating statesthat are classified in Global Operating States(GOS), Common Operating States(COS), and Plant System Operating States(PSOS). GOS are associated with permission/prohibition of overall MITICAactivities. Within a specific GOS, multiple, alternative Session Operating Scenarios (SOS) may be selected. Each SOS defines which plant units shall be in operation within a given GOS. Since GOS and SOS are relevant for personnel safety, MITICA Central Safety System will manage them and notify them to MITICA Central Interlock System and CODAS for their usage in overall plant protection and control. Common Operating States represent an overall state model that is common to all ITER plant systems. They provide summary information on PSOS. We introduce the COS concept in MITICA to complywith the ITER Plant Control Design Handbook, in view of the development of the ITER Heating Neutral Beam Injector (HNB). PSOSare specific statesof a given plant system, in our case MITICA or the HNB, and drive the plant system operation. The mapping of MITICA PSOSwithin the COS currently defined by ITER is presented.