Research on optimization technology of ventilation system in an industrial X-ray inspection workshop
10.3760/cma.j.cn121094-20240124-00036
- VernacularTitle:某工业X射线探伤厂房通风系统优化技术研究
- Author:
Yi GUAN
1
;
Zhixi GUO
;
Xiaojing ZHANG
;
Chao WANG
;
Xiuping LI
;
Qingdong WU
;
Song WANG
;
Dongliang CHAI
Author Information
1. 中国辐射防护研究院放射医学与环境医学研究所放射卫生室，太原 030006
- Keywords:
Radiation, ionizing;
Ventilation;
Ozone;
Nitrogen oxide;
Inspection workshop;
Computational fluid dynamics, CFD;
Technical reconstruction
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2024;42(11):862-868
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the reasonable airflow organization and exhaust system facilities during the operation of the inspection workshop, and solve the problem of the accumulation of harmful gases such as ozone and nitrogen oxides in the workshop.Methods:In May 2023, computational fluid dynamics (CFD) technology was used to numerically simulate the diffusion of ozone and nitrogen oxides generated by industrial radiographic inspection operations, and the comparative detection method was used to analyze the ozone and nitrogen oxides concentrations before and after the renovation of the ventilation system of the inspection workshop.Results:After the renovation of ventilation system, the average concentration of ozone in the inspection workshop decreased from 0.81 mg/m 3 to 0.03 mg/m 3, and the average concentration of nitrogen oxides decreased from 0.42 mg/m 3 to 0.01 mg/m 3, and the differences were statistically significant ( t=20.51, 10.38, P<0.001) . Conclusion:The ventilation facilities of the inspection workshop are set up in the airflow organization mode of sending up and down the exhaust, and the ventilation pipes are scientifically designed through the calculation of ventilation hydraulic balance, which can effectively control the concentration of harmful gases in the inspection workshop.
