Fig 1.
Risk assessment process.
Fig 2.
BT model.
Fig 3.
Transformation of BT model into BN model.
Fig 4.
SVDBN schematic diagram of the unsteady state process.
Fig 5.
SVDBN recursive inference algorithm network diagram.
Fig 6.
Flow chart of the recursive reasoning algorithm in SVDBN.
Fig 7.
Coal slurry process flow diagram.
Fig 8.
BT model of the coal slurry preparation system.
Table 1.
Node number and name.
Table 2.
Node failure rate.
Fig 9.
BN model of coal slurry preparation system.
Table 3.
Conditional probability of time slice between nodes in coal slurry preparation system.
Fig 10.
SVDBN model of the coal slurry preparation system.
Fig 11.
Failure rate of the coal slurry preparation system.
Fig 12.
Dynamic trend of the C3-C9 consequence rate.
Table 4.
Incidence of the C3-C9 consequences in the fifth time slice.
Fig 13.
Posterior probability and probability change rate of the second time slice node.
Fig 14.
Posterior probability and probability change rate of the third time slice node.
Fig 15.
Posterior probability and probability change rate of the fourth time slice node.
Fig 16.
Posterior probability and probability change rate of the fifth time slice node.
Table 5.
Maintenance rate of nodes.
Table 6.
Conditional transition probability of nodes considering maintenance factors.
Fig 17.
Reliability of coal slurry preparation system with and without maintenance factors.
Fig 18.
Consequential failure rates for C3-C9 when maintenance factors are considered.
Table 7.
Posterior probability of basic events when maintenance factors are considered.
Fig 19.
Posterior probability of nodes considering maintenance factors in the fifth time slice.