Abstract:
An online radioactive sources security System (ORSS) was developed for preventing high activity radioactive sources from committing a malicious act, since the radioactive source could be used to build a Radiological Disposal Device (RDD). The design features of an ORSS system in this research was covered the basic security functions such as detection, deterrence, delay, response, and security management according to the security level A of IAEA guideline. A detector was operate as an economical radiation monitor and integrated with the subsystem of compact CCTV unit, motion sensing unit, door access unit, and GPS tracking unit in order to link all alarm signals through a computerizing system in sequential actions. The system control software was also developed. The alarm signal could be sent via both internet and SMS mobile phone to the security center and responsible persons with online monitoring access. In functional tested results, it was revealed that the developed system could prevent unauthorized person from accessing the secured source in multiple alarm layers operation and could be used for protecting a high activity radioactive source removal without authorization at working place such as hospitals, industries and laboratories with high reliability security.
