Integrated model of port oil piping transportation system safety including operating environment threats

Operating environment threats influence on the maritime ferry technical system safety – the numerical approach

“…Considering the assumptions and agreements from Section 4, we assume that the components of the subsystem S  ,  = 1,2,3,4,5, at the system operation states z' b , b = 1,2,...,72, have the exponential safety functions, i.e. the coordinates of the vector (1) given in [9] are determined in Mathematica using the formula…”

“…where newlambda_u, newlambda_um, newlambda_up are the intensities of components departure from the safety states subset {u,u + 1,...,z}, u = 1,2,3,4, with the operation impact and also the climate-weather impact, given by (9).…”

“…The influence of the system operation states changing on the changes of the system safety structure and its components safety functions is given in [2], [5]. Thus, in the case when the operation time is large enough, according to (1) given in [9], the maritime ferry technical system unconditional safety function is given by the vector = [1, S'(t,1) , S'(t,2), S'(t,3), S'(t,4)], t  <0,+∞ ,…”

“…The paper presents a general procedure for numerical approach applied to determine safety characteristics of the maritime ferry technical system and its components, related to its operation process including operating environment threats. The procedure is based on the model given in [9]. On the basis of the proposed procedure, the computer calculations in Mathematica environment determining these characteristics are performed.…”