Impact of Human, workplace and indoor environmental risk factors on operator’s reliability in control rooms

Abstract

Adequate design of control rooms is very important for increasing the reliability of operators working in them. Therefore, it is necessary to choose the best solution for improving the compliance between operators and elements of control room while dealing with problems of illumination, thermal climate and noise. For this purpose we will analyze the impact of execution time of operator's information processing tasks, motor and logical operator's tasks, operator's functional state, workplace risk factors and indoor environment parameters on operator's reliability in control room. Methodological approaches for these five groups are formed and used for experimental research and to determine the level of their quantitative values. Research results are showing the following levels of reliability for specific indicators: reaction time ‐ very good, coefficient of task complexity ‐ optimal, operator's error caused by stress ‐ very good, workplace risk factor ‐ critical and indoor environment ‐ good. Because the functional appropriateness and efficiency in the operator's workplace were inadequate, the following recommendations and solutions were proposed: signaling and control elements should be placed on the central part of the control desk, because due to poor control desk construction, they cause uneven burden on various operator's body parts.

Keywords:

• Reaction time
• coefficient of task complexity
• operator's error caused by stress
• workplace risk factor
• indoor environment