Dose mapping around the Tehran Research Reactor after the core coolant loss accident

Core coolant loss accident and its impact on the reactor operators and the other personnel that are near the reactor containment is critical issue and should be investigated carefully. In the present study, MCNPX code was used to investigate gamma dose rate inside the reactor containment as well as its buildings when a coolant loss accident is occurred while some or total of the core would be bare. Some Geiger Muller detectors were used around the reactor pool and containment to obtain a detail dose mapping around the 5 MW research reactor core and its containment. In addition, the received operator dose rates were determined during the coolant loss at different positions of the TRR pool top.(author).