A cause$-$and$-$effect diagram illustrates logic for a function where two

valves will be closed and a pump will be de$-$energized when either of

two pressure sensors detects that pressure in a vessel is too high. Valve

$1$ cuts off inlet feed to reduce pressure in the vessel. Valve $2$ closes the

outlet to prevent process disturbance downstream. The pump is

turned off by de$-$energizing motor contactors to prevent pump failure.

Draw a diagram of the process scenario explained in $2-8$