  The purpose of Equatorial Port Plug 12 (EPP#12) for International
thermonuclear experimental reactor (ITER) is to provide a common platform and
interface, support or constrainer for five diagnostic plant systems and one
glow discharging cleaning system (GDC). As EPP#12 integrator, a team from
Institute of plasma physics Chinese of Sciences (CASIPP) performs the design
work. The Instrument and Control(I&C) is an important part of system design.
The main I&C functions will be implemented include temperature measurements of
the port structures, electrical heater with temperature control during baking
of windows and providing spare input measurement channel. The integrator should
provide the embedded temperature sensors, associated cabling, electrical
connectors and electrical feedthrough. Most electrical components will be
deployed in port plug structure which is a harsh environment for electrical
components. In this paper, we present the survey and research of electrical
components for ITER EPP#12. And the design and implement of a test environment
for electrical components which is based-on ITER CODAC is also described.
