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Year : 2011  |  Volume : 34  |  Issue : 1  |  Page : 37-40

Indigenous development and networking of online radon monitors in the underground uranium mine

Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai, India

Correspondence Address:
Y S Mayya
Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai
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Source of Support: None, Conflict of Interest: None

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There has been a long standing demand for online monitoring of radon level in various locations of underground Uranium mine for taking care of radiological protection to workers. Nowadays, radon ( 222 Rn) monitors, based on electrostatic collection of charged progeny and subsequent detection by semiconductor detector are increasingly employed for radon monitoring in environment. However, such instruments have some limitations such as (i) requirement of additional dryer since sensitivity is dependent on the humidity, (ii) cannot be connected to a network and (iii) not cost effective etc. Hence use of such instruments in underground uranium mine (humidity level >90), may not be reliable. Towards this end, we have indigenously developed radon monitor based on electrostatic collection and scintillation technology for the online monitoring in uranium mine. This instrument overcomes the above mentioned limitation of commercial radon monitors and based on custom made features. Different tests and measurements were carried out and compared with commercial instruments. It was found to be in an excellent agreement with the commercial instruments. A few such instruments have been installed in different locations of uranium mine at Turamdih and connected to a network system for online monitoring and display.

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