Lifted from a paper delivered at the International Conference on Manufacturing Science and Education- 2011- Sibiu România
Instead of just looking at just at severity and likelihood they also look at duration exposure. The numbers are also weighted.
THE KINNEY METHOD: HOW IT WORKS
The risk (R) assessment, after Kinney, is done considering three parameters: the probability (P) of an accident or damage occurrence, the exposure at risk frequency (F) and the gravity (G) of the induced consequence.
The probability of the damage occurrence during the exposure to a risk factor describes the accidental, stochastic and uncertain character. Kinney have defined 7 probability classes, to whom he allocated certain numerical values (see table 1).
The exposure frequency expresses the time lapse in which the worker is exposed to the risk factor action; this component is estimated by one of the 6 classes described in table 2.
Table 1 -The Kinney method: Numerical values for the probability
Probability (P)
Description (qualitative)
0,1
Virtually impossible
0,2
Practically impossible
0,5
Plausible, but unlikely
1
Improbable, but possible at boundary conditions
3
Unusual, but possible
6
Possible
10
Predictable
Table 2 The Kinney method: Numerical values for the exposure frequency
Exposure frequency (F)
Description (qualitative)
0,5
Very rare (less than once per year)
1
Rare (yearly)
2
Monthly
3
Occasional (weekly)
6
Regular (daily)
10
Permanent
The size of damages is expressed by 5 gravity classes, highlighted in table 3.
Table 3 The Kinney method: Numerical values for the gravity
Gravity (G)
Description (qualitative)
Consequence type
Damage (financially expressed)
1
Low
Injury without work capacity loss
< 250€
3
Significant
Injury with loss of work capacity
250€ - 2500€
7
High
Invalidity
25000€ - 100000€
15
Very high
One fatality
125000€ - 250000€
40
Catastrophic
Several fatalities
> 250000€
A value must be allotted to each of the three factors. This designation is not the result of an inspirational moment. Normally, the process should start upwards, by defining for each working task, of the hazards and for each hazards of the risks related. Only after this hazard and risk identification phase (e.g. based on a check – list) the quantification can be initiated.
However, if the process is done by a single individual, the process will be a fake, while it offers the unique perspective of a person. Therefore we can state that the need for a multidisciplinary team is obvious.
Afterwards, but only after the completion of this first identification phase, will be imagined and developed the risk propagation scenarios. Based on the context setting, the numerical values will be assigned to probability, frequency and gravity; the risk level will be obtained by multiplying these three factors. The value obtained allows then to frame the risks into 5 levels, according to table 4.
The Kinney method: the risk ranking scale
Risk level (R)
Risk class
Required action
< 20
Very low
Acceptable risk: no measure required
20 - 70
Possible
Monitoring
70 - 200
Significant
Measures to be taken
200 - 400
High
Immediate improvement
> 400
Very high
Activity cessation
If the method is applied by a working team, it is strongly recommended that all the R values are retained, an average value to be computed, discussed and interpreted within the group session.
I can't tell you if its any good-looks bit laborious to me!