42 Computer software design, updating and maintenance; technical consultation, evaluation, research, design and analysis in the fields of the effects or explosions, fires, and blast-related industrial accidents; engineering services; providing technical information in the fields of engineering and the effects of explosions, fires and blast-related industrial accidents; providing temporary use of non-downloadable online computer software used to evaluate, analyze, calculate and model the risks and effects of explosions, fires and blast-related industrial accidents and other industrial accidents; providing temporary use of non-downloadable online computer software used for risk and hazard analysis in the fields of explosions, fires and blast-related industrial accidents; and providing temporary use of non-downloadable online engineering modeling software; design and development of computer software