Application of Risk Theory in Man–Machine–Environment Systems - Fundamentals and Assessment Tools for Occupational Ergonomics - page 174

FIGURE 8.8 RCM method for risk evaluation — 250 t crane.

Suggestion of new measurements led to minimization of safety failure influences towards residual or
acceptable risk levels. Of course, failures failures with impact such as great time losses of device were
also taken into consideration. Evaluation of the present maintenance strategy and suggestion of new
steps for increasing efficiency were the result of the analysis.
After the introduction of device into operation, it was evident that the value of operation costs was
dependent on the maintenance quality. RCM (reliability centered maintenance) helps to master
problems of incomplete data collection about machines and devices, which leads to incorrect decisions
and the result is often not profit able, but is a unreasonable loss. The flexible maintenance strategy
requires elimination of the most risk factors to apply new methods of personal management such as
the basic principle of total production maintenance. It enables flexible response to “requirements” of
own operation (devices).
All changes require initial investment. But predominately in the area of maintenance, it is important to
reduce costs that lead to output profit because of time loss and higher production quality.

Bibliography
1. Direction 391 89 EU.

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2. Direction 392 EU.

3. Sinay, J., Paˇaiov´ , H., Kopas, M., Tomkov´ , M., Application of technical risk theory for evaluation of
gearbox damaging processes, in IEA 97, Helsinki, s.559-561.
4. Sinay, J., Oravec, M., Kopas, M., Juris, M., New development trends in the application of risk theory of
man-machine-environment systems, in Advances in Occupational Ergonomics and Safety, IOS Press,
Washington, 1997, s.573-575.

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