It is a test to assess the performance of displacement system of semi-condoctor
equipment that uses flammable or toxic substances. It conducts evaluation on
enclosures that is installed with displacement system and that may have a leak source
of gas or liquid chemical substances such as valve. QAI ASIA provides advisory to
semi-conductor equipment providers to design in accordance with the common
performance standard through SEMI S6 test and helps users to understand required
conditions of displacement system.

It is a resistance criterion test of instantaneous voltage sag of semi-conductor equipment
proposed by SEMI. It evaluates resistance caused by power fluctuation whether the
semi-conductor equipment is properly operated without malfunction even if there is
a changed circumstance in the industrial site such as instantaneous voltage drop.
It is passed if the tested equipment is properly operated during the F47 test.