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The electrical, mechanical and control system design of Helium Purification System Experimental Power Reactor Test Loop (RDE) has been conducted. The requirement system designed must be reliable operated, safety to personnel and equipments, ease of maintenance and operation, protection of equipment electrically, interchangeability of equipments and addition of the several model of tranducer. In order to achieve the above goals and obtain the desired results, the system based on electrical and instrumentation practical experiences will be needed. In this paper consist of the HPS electrical design and the instrumentation and control system. The criteria and the methods of designs of electrical and instrument equipments of the system have been discussed and investigated. The electrical and instrumentation control system drawing and requirement of design will be presented as the outcome of the design. The designed of power system analisys and also to overcome the problem of under voltage is consequently simulated by ETAP 12.6.

The Experimental Power Reactor as a fourth type of reactor currently being developed in Indonesia is high temperature gas cooled reactor which has a passive cooling system. This passive cooling system uses the principle of natural circulation through changes in water density and called as reactor cavity cooling system. To study the reactor cavity cooling system, a test facility will be created at BATAN which is called the Cavity Cooling Test Loop. This test facility consists of mechanical systems, piping and instrumentation. The instrumentation are includes temperature measurement, flow rate, pressure and heating control. Measurement and control monitoring systems that are needed in order to get data effectively and efficiently have not been made. Therefore, in this study, LabVIEW was used to create monitoring and control programs. A program to monitor temperature, flow rate and pressure has been made with a measurement point of 60 thermocouples, 1 flowmeter, and 1 pressure sensor. The heaters control program is made for 10 units with control of each heater ranging from 200°C to 900°C. Simulation has been done to test the performance of the program using DAQ simulator. Based on the simulation results, the program can be applied to the test facility by paying attention to the input type in the DAQ module.