Wrap-Up of Preliminary Data Analysis

The elements of the PDA have been reviewed. By now it should be realized that this system is not doing the thinking for ns, but, instead, provides us with the tools to help us think in a clearer, more consistent manner. Its design intends to steady our 

Accident Number Information Tools and Equipment Knowledge Capacity Incentives 

Human barrier that helps explain why it was not used  

Accident Number Physical Barrier that Was Not Used Information Tools and Equipment Knowledge Capacity Incentives 

When looking at major groupings or clusters, it really will not make or break us if we miss an accident that probably should have gone in Group A instead of Group C. The result may have made Group A contain 75 accidents instead of 76—that is still 

You should take what is given about the accident, read into it what you need to make sense out of it, trust your instincts and when you are finished, the margin of error will be well within the acceptable limits. Mainly you must be consistent. Lack of consistency really shows up when you put Accident 1 in Group A and Accident 73 in Group D when they are identical. Lackof consistency can jeopardize any potential usefulness of the PBA and HBA. 

If you have an operation with few accidents, say 10 to 20 that you were interested in, you would probably handle the analysis a litde differently. Beeause the number of accidents is small, you can go to the operation, and get additional information about each accident, and then lactor them into their respective groups as per the PBA andHBA. 

But it is important to remember that HBA and PBA are more than a set of tools. They are different in perspective, a different way of looking at accidents. Even if the industrial operation only had one accident, you would still want to look at it in terms of PBA, and HBA, even though you would not go through the paperwork of PBA 

There is no hard and fast rule on how far back to go. Do you look at accidents and incidents dating back one year, two years, three years If you were dealing with a large operation, which is above the national average for incident rate, you may not have to go past one or two months to get your 100 accidents. 

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