RADIATION SAFETY ANALYSIS OF NEUTRON COLIMATOR BASED ON NICKEL MATERIAL FOR PIERCING RADIAL BEAMPORT UTILIZATION OF KARTINI RESEARCH REACTOR
ABSTRACT: Radiation safety
analysis of nickel material neutron colimator (as requirement) for pearcing
radial beamport utilization of Kartini research reactor has been done before
the neutron colimator instaled. The neutroncollimator made of nickel material
with cyllindrical geometry which is 156 cm length. The Inside and outsidediameter
are 16 cm and 19 cm respectively with mean cyllindrical thickness is 1.5 cm.
Irradiation process to the neutron collimator begin when the reactor beeing
operated for 6 (six) hours per day and assumed optimum at 100 kW power level.
Results of the analysis showed that gamma dose rate which was generated by
collimator at a distance of 50 cm from the end of the collimator is 1.5328e-03
mr/hours. The dose rate is still below the dose limit value which was required
by Nuclear Energy Regulatory Agency (BAPETEN) is 1 mr/hours. It can be
concluded that utilization neutron colimator of nickel material which installed
at the radial pierching beamport of Kartini Reactor is safelly.
Author: Widarto
Journal Code: jpfisikagg160020
