GUIDE-WORDS FOR HAZOP Flashcards
1
Q
NO/NOT
A
The parameter is zero.
Something does not happen but no other
effect e.g. no flow, no pressure
2
Q
MORE THAN / LESS THAN
A
Increases or decreases in process parameter
3
Q
AS WELL AS
A
Qualitative increase
Some additional effect e.g. material in
addition to the normal process fluids
4
Q
PART OF
A
Qualitative Increase
Partial effect (not all) e.g. a
component is missing from the
process fluid
5
Q
REVERSE
A
Opposite
Reverse flow or material e.g.
reverse flow of process fluids
6
Q
OTHER THAN
A
Substitution
Totally different effect
