Research And Application Of Domino Effect Of Chemical Enterprises Evaluation

A domino effect is a failure at the chemical plant, causing failure of the local function, causing energy and accidental releases of hazardous substances(Such as fire, explosion and toxic gas leak),Because the pattern of centralized arrangement, once certain conditions have caused the primary accident spread to the surrounding equipments and the enterprise,Giving rise to a cascade of accidents,Cause larger than the primary effects of the accident, the loss is more serious consequences.At present,Many companies expand the size of the original installation or improvement of existing devices to increase productivity based in the original area.In this case,How to ensure that the renovation and expansion plan after the overall risk to a minimum, has become a very important issue. And the domino effect,as one of the factors of the overall risk of chemical companies,Should be avoided as much as possible is in the planning and design must be considered.So,According to the characteristics of a domino effect and the actual situation of the enterprise, the choice of relevant model for the planning of renovation and expansion project put forward practical proposals to prevent and reduce the domino effect is of practical significance.In this paper,will analysis the impact of fire and explosion inl the renovation and expansion.By thermal radiation model, the explosion overpressure models,and explosion debris model to quantify the probability of risk.at the same time,analyze an example,calculating the probability of domino effect of a renovation and expansion program,to provide the basis for revisions to the program of renovation and expansion.