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PRIORITISING HAZARDS - CALCULATING
THE RISK SCORE:
The
risk assessment calculator is intended as a guide to
identify level of risk. The risk score should be
interpreted with caution. It should only be used as a
basis for reasoned judgment. The method of use of the
calculator is as follows:
1.
Start
with the most likely or typical CONSEQUENCES
resulting from exposure to the hazard and mark your
choice on the POSSIBLE CONSEQUENCES line.
2.
Estimate the EXPOSURE, that is, how often people,
plant and equipment are exposed to the hazard, and mark
your estimate on the EXPOSURE line.
3.
What is
the likelihood or chance that the consequences you have
predicted will follow? Mark your choice on the
PROBABILITY line.
4.
Draw a
line from the point on the PROBABILITY scale to
the appropriate point on the EXPOSURE scale.
5.
Extend
the line to the TIE LINE.
6.
Draw a
line from the intersection of the TIE LINE to the
appropriate point on the POSSIBLE CONSEQUENCES
scale.
7.
Extend
the line to the RISK SCORE scale.
CONSEQUENCES
Catastrophe -
numerous fatalities, extensive financial loss ( > $5M),
major disruption to operations, extensive environment
damage
Disaster - multiple fatalities,
significant financial loss ($1 – $5 M), major disruption
to operations, major environment damage
Very Serious - fatality, significant financial
loss ($500,000 to $1M), significant production
disruption, significant environmental disruption
Serious - serious injury (permanent
disability, amputation), notable financial loss
(<$50,000) slight production or environment disruption
Important - Injury requiring medical
treatment, notable financial loss ($5,000 to $50,000),
minor environmental damage
Noticeable - first aid treatment (minor cuts,
bruises, bumps), negligible financial loss (<$5,000),
negligible environmental damage |
