These studies should be
additional to the usual Hazop of the line diagram and will not replace it. In
addition, Malpas10 suggests that during design, one member of the design
team should be responsible for thinking about the plant after next, as during
design we are conscious of all the changes we would like to make but cannot
make as there is insufficient time. These constraints on the development of
inherently safer designs are discussed in more detail in references 5 and 11.