Contributing Analysis of Poisoning and Asphyxiation Accidents in Limited Space Based on FTA and ISM
In order to reduce the incidence of poisoning and asphyxiation accidents in limited space operations and improve the safety management level of limited space operations,fault tree analysis(FTA)and interpretive structure model(ISM)were used to analyze the cause factors and the relationship among them.Firstly,the fault tree of poisoning and asphyxiation accidents in limited space operation was established and the structure importance degree of the basic events were calculated.Secondly,the basic events of FTA were classified and modified as the contributing factors of ISM.Thirdly,the ISM theory was used to construct a seven-level ISM which shows the relationship among the contributing factors.The results show that there is a hierarchical relationship between the ISM levels from the fundamental factors to the indirect factors and then to the direct factors.Therefore,the safety state of indirect influence factors can be improved by strengthening the management of fundamental influence factors,thus the incidence of direct influence factors will be reduced.
limited spacepoisoning and asphyxiationfault tree analysis(FTA)interpretative structural model(ISM)
NETL
NSTL
万方数据
维普
