presenting h3se excellence model to sustainable excellence of petro chemical co.

occupational health and safety systems have a unique role in sustainable development of hazardous industries. the aim of this research is investigating and assessing of h3se performance excellence systems. to achieve mentioned goal by qualitative approach and multi grounded theory tools h3se excellence model was described. mentioned tools contain two qualitative research methods (meta synthesis and grounded theory). in the first step were a systematic literature review and assessment tools. then second part was focused on contingent factor of problem.research finding reveal that safety performance system has evolutional trend, and involve environmental, social, security issues. in summary process, leadership, soci-environmental result and employee result are the most important criteria. it should be noted some differences among twelve criteria (especially process orientation, leadership and key performance indicators) in grounded theory and meta synthesis were observed.