Journal of Radiation Research and Radiation Proces ›› 2014, Vol. 32 ›› Issue (4): 40601-040601.doi: 10.11889/j.1000-3436.2014.rrj.32.040601

• RADIATION PROTECTION • Previous Articles    

Experimental study on encapsulating the loose contamination by atomizing process

GUO Lixiao  WU Mingliang  ZHANG Wenjun  ZHANG Xiaowen  WANG Xudong   

  1. (China Institute for Radiation Protection, Taiyuan 030006, China)
  • Received:2014-02-17 Revised:2014-04-24 Online:2014-08-20 Published:2014-06-06

Abstract:

The ultrasonic atomizing technique was used to add fixative to the analog device without human in-tervention. The simulation experiment on loose contamination was conducted by choosing the calcium carbonate powder as analog solid agent. And then, the encapsulated loose contamination was disturbed by fan along the direction parallel to ground to investigate the amount of loose contamination as well as the fixative vs. the re-suspension factor and particle size distribution. The results showed that the loose contamination deposited amount had a positive correlation on the re-suspension factor. The re-suspension factor decreased with the increasing amounts of fixative. When reaching a certain value, the effects were tiny by increasing the amount of fixative. For 1mg•cm?2 calcium carbonate powder, 0.57 kg•m?2 fixative was necessary. According to the amount of loose contamination, an appropriate amount of fixing agent can effectively fix the loose contaminants and significantly reduce the re-suspension factor, which can reduce workers' exposure risk to radiation.

Key words: Radiation protection, Loose contamination, Encapsulating, Atomizing, Re-suspension factor

CLC Number: 

  • TL71