Accident analysis

Accident analysis includes statistic, mapping, monographic, economical, survey and expert analysis.

Accident statistic analysis is studying accidents through documents, such as reports, acts, and logs. That allows selecting accidents by some features: occupancy, workplace, workshop, experience, age, and causal factors, equipment, which caused injury.

Comparing the number of accidents, incidents or near misses at particular work locations will not necessarily establish which location is the safest, because of other factors, particularly the number of people working at each location. Use of the incident rate partially eliminate this problem and is defined as follows.

Incidence Rate: the number of undesired events for each one thousand persons' working at that location. The formula to calculate the incident rate is:

The incident rate gives a far more accurate comparison between locations, however, to achieve the best figure for comparisons between similar work locations we need to take into consideration the number of hours each person works at the particular locations. The result of this calculation is known as the frequency rate.

Frequency Rate: the number of undesired events for each one million hours worked. The formula to calculate the frequency rate is:

If another work place or enterprise maintains their records per thousand workers or per 100 000 hours worked, you only have to shift a decimal place from one set of figures to obtain a direct comparison. This is one reason why you must define your terminology.

Monographic analysis is focused in detailed examination of all working environment, technology, workplace, sanitary and hygiene conditions, personal protective equipment.

For example a workplace being analyzed can be described as one of the following.

Hazardous workplace: A work environment, which contains dangerous situations that can cause injury to a person.

Unsafe workplace: A workplace, which contains hazards, which are not recognized, or are recognized and ignored.

Unsafe system of work: A work procedure or process where it is foreseeable that a hazard or risk can cause an injury; and

Unsafe work practice: An activity which deviates from a safe system of work, in that it does not take account of a hazard, or is inherently risky in the face of a recognized hazard.

Mapping analysis implies spotting accidents in the map of workshop. That helps identify high-risk places, which need implementation of routine and perspective preventive measures.

Economical analysis consists in studying expenses imposed by occupational accidents.

Survey analysis considers worksheets filled by employees to recommend preventive measures.

Expert analysis is grounded on expert assessment of working environment, discovering noncompliance of technology, equipment, tools with OS and ergonomic standards.