Abstract.
For the floor polymeric coverings
that do not have antistatic properties, the technique of restricting accumulation
of operator's electrostatic potential to admissible value was
developed. This value is established by the requirement of the immunity of the
automated process control system (ACS TP) to the contact electrostatic
discharge. The technique allows determining the conditions of
operation of the floor polymer covering in the control room: select this
combination of the relative humidity of air with the dimensions of open
ungrounded parts of the covering surface at which the operator's potential does
not exceed the admissible value. In accordance with the technique,
the dependence of the specific surface resistance of the floor covering on the
relative humidity of the air is used in the calculations. When
designing new objects, you should choose antistatic floor coverings that must
be used in combination with antistatic shoes (antistatic straps) to ensure a
reliable electrical contact between the operator's body and the surface of the
flooring polymer covering. Calculations confirmed that in this
case the electrostatic potential of the operator does not exceed the admissible
value for the equipment of ACS TP.
Key words:
automated process control system (ACS
TP), the discharge of static electricity (ESD), electromagnetic disturbances, floor
polymer covering, relative humidity of the air.
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