A well trained and skilled operator is one of the key elements in increasing the plant's safety and productivity. Enabling quality training for operators is becoming more and more important as they nowadays need to handle increased load of information and duties while the lack of operators' training is the major reason for their inadequate performance. 
Conventional training methodologies are not enough to train an operator for seldom-occurring dangerous situations, therefore the operator training simulator (OTS) has become inevitable part of their training where they are able to learn without actually endangering the plant and personnel.

Training is the key element in any skill-based job. Educational research concludes that people learn better by experience than through reading or lectures. It is impossible to replace real experience with simulated training, but simulators can in a cost effective way increase operators skills react better and faster. 

Plant operator training simulators can provide high level training all over the industrial areas.
Simulation-based vocational trainings together with visualised unit processes are one of the fastest and most obvious forms of staff qualification improvement. This article is going to introduce elements of this system in detail. 

Recently, Operator Training Simulators (OTS) have become more a necessity than a luxury in the process industry. That is why investments for the purpose of operators training are increasing in all industries. However, the investment in OTS system is rarely a small one and challenges from the point of an idea to the successful development and integration in working environment are numerous. This article is addressing some of them.