 | A HAZOP leader will be
qualified to take the role by in-depth study of
HAZOP principles, experience in studies lead by
others, and assessment by an experienced leader.
|
| The majority of team
members on a study team will already have
experience of previous studies, or will have had
training in HAZOP techniques.
|
| The core team will have
a minimum of four participating members
(excluding Leader and Recorder), with a broad
range and depth of experience relevant to the
study object. At least one will have a good
background knowledge of relevant past accidents,
and lessons learned.
|
| The HAZOP leader must be
in a position to request a change in team
personnel, or to halt the study, if he considers
this necessary to ensure quality.
|
| If a member of the core
team is absent, the study will stop until his
return or replacement by a suitable substitute.
|
| The team must select a
suitable set (or sets) of guidewords to use in
the study, chosen to ensure complete coverage of
the parameters of importance.
|
| The leader will divide
the equipment under study into 'study sections'
which are not too large or complex, to avoid the
team being confused when applying the guidewords
and hence missing scenarios.
|
| All guidewords will be
applied to each 'study section', and their use
will be recorded. When identifying problem
scenarios safety systems will be assumed to have
failed.
|
| A statement of study
scope is required, listing all P&IDs or other
drawings to be studied. Every drawing on the list
will be formally studied unless the team agree
that it is not necessary, and record their
reasoning.
|
| The HAZOP Leader will
ensure that all equipment on each P&ID has
been studied, and for batch systems that all
equipment has been studied for every step.
|
| If the HAZOP Leader is
informed that a drawing is not up to date, he
will put it aside until it has been updated and
formally checked.
|
| Before the team makes a
recommendation for change or further study, it
will agree that the current situation is
unacceptable. A company specialist may be
required to advise on suitable criteria.
|
| The team will decide,
and the record will state, whether a
recommendation relates to a safety issue, an
environmental issue or an operability issue. The
HAZOP Leader will carry out a check of this
categorisation after the session.
|
| The HAZOP leader is
responsible for ensuring that each recommendation
matches the intention to reduce the risk of the
scenario under study.
|
| The Leader and his
organisation will strive continuously to identify
and implement means to improve the HAZOP process.
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