Comprehensive Risk Evaluation for Chemical Materials Applied to a Turbine Generator, and the Comprehensive Chemical Risk Comparison between Different Generators

摘要

Organic chemical materials and their complexes are applied to a turbine generator as insulation material. Epoxy resins compose of stator bar insulation and several kinds of solvent are used for washing and diluting varnish. Generally, utilization of these chemical materials is controlled by national laws with respect to human health and environment, and chemical supplier obligated to furnish Safety Data Sheet (SDS) to users. SDS shows lots of information prescribed by national standards. However, all the hazardous data are subdivided to each hazardous item at each chemical material. Thus, the total chemical risk, to human health and environment, of all chemical materials applied to turbine generator could not be evaluated comprehensively. Generator designers, production engineers and safety manager, who are not specialists in organic chemical materials, need a simple method for determining the potential chemical and environmental risk in the material selection process and manufacturing line construction process. Regretfully, there are no indices for expressing the potential chemical risks to human health comprehensively. So, in this paper, we propose chemical risk evaluation method and index to express comprehensively by using hazardous information described in SDS and the hazardous classifications according to Globally Harmonized System of Classification and Labeling of Chemicals (GHS). Furthermore, we applied this evaluation method to several turbine generator adopted with different stator bar insulation systems.