Safe behaviour score

The observers audit the work area recording the number of safety critical behavioins observed and the ninnber of unsafe behaviours observed to produce a percentage safe behaviour score as follows ... 

When the checklist has been completed the safety performance measure can be calculated. This is a weighted scoring system, which is very sensitive to even slight changes in the frequency of unsafe behaviours. It is, simply, the number of safe behaviours seen, expressed as a percentage of the total number of safe and unsafe behaviours observed. To calculate this ratio, the SAFE and UNSAFE columns are totalled and the following formula is applied ... 

Figure 36.5 shows the scores plots for PC2 v. PCI (A) and PC4 v. PC3 (B). Such plots are useful in indicating a possible clustering of samples in subsets or the presence of influential observations. Again, a spectrum with a spike may show up as an outlier for that sample in one of the scores plots. If outliers are indicated, one should try and identify the cause of the outlying behaviour. Only when a satisfactory explanation is found can the outlier be safely omitted. In practice, one will... 

As indicated above, the observer should walk round the designated area at convenient, but as far as possible, random intervals and, using the checklist, score the number of safe and unsafe acts as described below. It is important to score only what is seen. The observer should not try to interpret behaviours or make assumptions. Only what is actually seen should be recorded. The method of recording is as follows. 

The UNSAFE behaviour column can have scores ranging from 0 if all observed behaviour is safe, or from V to as many unsafe behaviours (i.e. individuals not behaving safely) as are observed. 

Observe. The observation step can take the form of a general observation of an employee s behaviour and counselling in the appropriate target behaviour. Alternatively the observer can refer to a previously established critical behaviour checklist and score the number of safe and unsafe behaviours observed. 

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