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ARTICLE
Year : 2011  |  Volume : 34  |  Issue : 4  |  Page : 242-245

Radiation exposure control by estimation of multiplication factors for online remote radiation monitoring systems at vitrification plant


Health Physics Division, ORPRS, BARC Trombay, Mumbai, India

Correspondence Address:
Umesh V Deokar
Health Physics Division, ORPRS, BARC Trombay, Mumbai
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0972-0464.106097

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Vitrification Plant is commissioned for vitrification of high-level liquid waste generated in Nuclear Fuel Cycle operations by using Joule Heated Ceramic Melter first time in India. Exposure control is a major concern in operating plant. Therefore, in addition to installed monitors, we have developed online remote radiation monitoring system to minimize number of entries in amber areas and to reduce the exposure to the surveyor and operator. This also helped in volume reduction of secondary waste. The reliability and accuracy of the online monitoring system is confirmed with actual measurements and by theoretical shielding calculations. The multiplication factors were estimated for remote online monitoring of Melter off Gas (MOG) filter, Hood filter, three exhaust filter banks, and overpack monitoring. This paper summarizes how the online remote monitoring system had helped in saving of 128.52 Person-mSv collective dose (14.28% of budgeted dose) and also there was 2.6 m 3 reduction in generation of Cat-I waste.


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