ASSESSMENT OF PERSONNEL DOSE EXPOSURE MONITORING BY TLD AT NMC, RANGPUR

Abstract

We investigated the whole body dose exposure monitoring on scientific personnel of Rangpur Nuclear Medicine Centre for the period of 01-12-2000 to 30-06-2002 due to gamma and beta rediation.

Methods : Distributed the Thermoluminescent Dosimeter badge among the 17 scientific personnel at Nuclear Medicine Centre, Rangpur and every after three months supplied by the health physics division of Bangladesh Atomic Energy Commission, Dhaka. The TLD badges are sent to the health physics division of BAEC, Dhaka for examinations. In this way six time TLD badges are worn and examined.

Results : The whole body dose equivalents of the same individuals for 19 months in this centre ranged from 0.107 to 4.56 mSv. The highest dose was found to be received by the individual who was involved in dispensing, radioiodine uptake and scanning section. On the other hand, lowest doses were received by individuals working registration and reception section.

Conclusion : It is evident that, the doses received by the individual depend on the nature of their duties and the exposure level is higher in the dispensing, thyroid uptake lab., gamma lab., and isotope store room. Moreover, it was found that, direct MAY - AUG. 2003 Volume IX Number II radionuclide handlers received more dose than the other working personnel.