Preliminary ranking of the factors

First sums of ranks by factors then differences (Ai) between sums of 

The obtained results facilitate constructing the rank graph. However, prior to that, one should determine the degree of opinion concordance of all the researchers by the concordance coefficient  

Before drawing a conclusion based on the concordance coefficient, it is necessary to test its significance. Thereby one should keep in mind that value m(k-l) o has an X2 distribution with f=k-l degrees of freedom. The arithmetic value of the x2 criterion is calculated by the formula  

The hypothesis on concordance of the researchers opinions is accepted if by the given degrees of freedom and a significance level the calculated value %2 is above the tabular one [10]. 

Since the concordance coefficient values are significantly different from zero, one may say that there is concordance among the opinions of eight researchers. To be sure, the significance of the concordance coefficient was checked by Eq. (2.32). 

---

Many hazard analysis and risk assessment techniques have been developed. These are just a few of the methodologies mentioned in the literature preliminary hazard analysis gross hazard analysis hazard criticality ranking catastrophe analysis change analysis energy flow/barrier analysis energy transfer analysis event tree analysis human factors review the hazard totem pole and double failure analysis. There are many other hazard analysis systems. 

---