earticle

영어

As the exposure standards for chlorobenzene is revised to the level of an advanced nation, it offers that the present 75ppm(350mg/m3) of TLV-TWA strengthens to 10ppm(46mg/m3) and the 20ppm(94mg/m3) of TLV-STEL is newly established to minimize the occurrence of occupational hazard of workers handling chlorobenzene.The reason to strengthen has a setting background of the exposure standard revision of the advanced nation and a scientific approach through a research data and a review for human and animal toxicity, and has a technical approach through a review for the application of revised criteria for exposure as establishing to improve the working environment to catch hold of the actual conditions of working environment, and synthesizes the administrative and economic basis of impact analysis of regulatory for the ripple effect to the domestic industry as the application of revised criteria for exposure. Specially, as the chlorobenzene by the research results of the developed countries has an effect on the liver, the kidneys and also the history of blood in the past concentration, TWA trends to strengthen below 1ppm or 10ppm and sets with considering the economic conditions through the exposure situation of our country and with considering to be able to take full advantage for health protection standards for workers in workplace. Also, the reason to establish newly is set with considering that the work characteristics has injection for melting chlorobenzene of intermediate products and has the situation as a lot of work and the work possible with high concentration exposure in short-term for sampling of the material response to confirm the status of reaction.