Instrumentation & control system for SAMOP reactor experimental facility
Syarip(1), Rosyid M(1), Dewita(1), Abimanyu A(2)

(1) Centre for Accelerator Science & Technology, National Nuclear Energy Agency, JL. Babarsari, POB 6101 ykbb, Yogyakarta
(2) Polytechnic Institute of Nuclear Technology, Yogyakarta.

Email: syarip[at]batan.go.id

Abstract

The instrumentation and control system (ICS) for a subcritical nuclear reactor experimental facility for producing Mo-99 radioisotope is presented in this paper. The system is designed based on the defense-in-depth concept. A sub-critical reactor experimental facility for Mo-99 production (SAMOP) has been designed and being constructed at the Centre for Accelerator Science and Technology (CAST), Nuclear Energy Agency (BATAN). The reactor subcritical facility is fuelled by uranyl nitrate and driven by an external neutron source from the radial beam-port of Kartini reactor. The SAMOP-ICS was designed using 2 neutron detectors of fission chamber and compensated ionization chamber types and provided with a safety rod made from boron-aluminum (boral) used for shutting-down the reactor in emergency condition. The method used for reactor protection system is based on hardwired with a fail-safe principle. The safety rod drive mechanism is designed by using rack and pinion, and provided by the safety button of key release and electromagnetic holder status.

Keywords: instrumentation system, nuclear, reactor, subcritical, Mo-99, uranyl nitrate

Topic: Physics