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IEVref:426-04-56ID:
Language:enStatus: Standard
Term: malfunction, <explosive atmospheres>
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Definition: situation where equipment or components do not perform their intended function with respect to explosion protection

Note 1 to entry: A malfunction can happen due to a variety of reasons, including:

  • failure of one (or more) of the component parts of the equipment or components;
  • external disturbances (e.g. shocks, vibration, electromagnetic fields);
  • design error or deficiency (e.g. software errors);
  • disturbance of the power supply or other services;
  • loss of control by the operator (especially for portable equipment).



Publication date:2020-03
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