ANDREWS, J.D. and MORGAN, J.M., 1986. Application of the digraph method of fault tree construction to process plant. Reliability Engineering, 14 (2), pp. 85-106 [doi:10.1016/0143-8174(86)90045-4]
This paper describes the digraph method of fault tree construction and its application to the process stream of a butane vaporiser. It is shown that an accurate, well-structured fault tree can be produced for a process system which incorporates a number of control loops.