Indigenous NBC sensor for Arjun MBT
18 May, 2007 (FIDSNS)
The Arjun MBT NBC filtration system has been integrated with roentgenometer cum flash sensor alongwith a chemical sensor. These products have been developed by Defence Research and Development Organisation (DRDO). A roentgenometer is used to measure of dose rates recieved by the crew of Arjun Tank or other armoured vehicles which have similar systems in Indian Army. It has energy compensated GM tube sensor (80 keV to 1.3 MeV) with an analog display. It meets all JSS 55555-L 3 test series specifications. It displays 0 to 1000 R/h in 4 ranges with an accuracy of plus or minus 2%. It weighs approximately 2.5Kg and is powered by 18-32 V DC tank batteries.
The gamma flash sensor usses silicon PIN photodiode with a trigger level of 4 R/s (+2/-1) with a response time of less than 100 miliseconds and hold time of more than 100 miliseconds.
The shielding efficacy of Arjun MBT against INR and fallout radiation in nuclear envirinment and high strength radioactive sources has been determined using a pocket dosimeter. Pocket dosimeter has been developed by DRDO too.
A total protection factors of MBT Arjun have been determined by creating a nuclear field in the environment.
Successful completion of the sensor task in MBT Arjun has prompted Indian Army to request DRDO to integrate the system in its other armoured vehicles.
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