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Safety at Workplace



Signal displays and panels


If it is a one clear signal, it is easy to react. It takes a fraction of a second to press a button when a signal lamp lights and mistakes rarely occur. But, however, as soon as one has to make a choice before acting, things become more difficult, eg. if you have to press a button when a red lamp flashes from among several lamps different colours.

In order to be able to read instruments rapidly it is important that :

  • The instrument panels are sufficiently large and clear.
  • The instruments are clearly marked and placed according to work process or category.
  • All gauges turn in the same direction.
  • All gauges are easy to read instantly when pointing at the normal functioning position.

Location of signals and displays

All signals and information displayed to the operator must be easily distinguishable.

This can be done by the proper placement of display positions and by changing the size, shape or colours of the displays.

The ways of doing this are :

Placing the instruments or indicators in logical sequence or in correspondence with the machines represented by them.

Locating frequently used ones between the work table height and eye level.

Changing the size, shape or colour for different categories of instruments or indicators.

Using simple words or adequate abbreviations for clearly marking each instrument or indicator.

Removing or covering unused displays.


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