Fine, William method

The risks upcoming from vertical infrastructures (streetlights, traffic lights, walls, etc.) near the trench were evaluated by William Fine s method as Acceptable and by NTP330 as for correction and controller actions . This situation is repeated all over the risk evaluation work. 

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This article compares the results of risk assessment of opening a trench in an urban site by two methods traditionally used— William Fine (Fine, 1971) and NTP-330 (Bellovi, and Malagon, 1993) with an assessment by a method in the validation phase (MIAR) (Antunes et al. 2010). 

Figure 1. Evaluation results by 15 evaluators, for each risk, by William Fine method.

The existence of nearly a third of the risks evaluated (32%), with valuations distributed in 4 or even in the 5 possible levels of evaluation, corroborates the view that the application of William Fine, as the sole evaluation method for the analyzed activities can easily cause the implementation of excess prevention measures or by the contrary, minimizing the risk and increasing the susceptibility for accidents. 

As the NTP330, William Fine method is influenced by the historical accidents of the company. This method is greatly influenced by the subjectivity of the observer, with regard to the quantification of the injuries and damage and the assessment of risk exposure. Considering the history of accidents at work in this activity, MIAR reflects the best of the reality of the activity. 

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