TG-Filter_EN_01—2016
7
Hazard areas on the filter
Hazard area
Symbol in
operating
instructions
Warning against overpressure
The entire filter is pressurised during operation. Relieve all pressure before
starting any work on the filter.
Warning against explosive atmosphere/explosive gas
Only filters with the appropriate ATEX code must be used in a potentially
explosive environment and for filtering explosive gases. The filters must be
connected to the customer's equipotential bonding system (local equipotential
bonding).
Beware of critical gases
The filtered gas could be hazardous. Keep appropriate notes on hazardous
substances at hand and heed them when working with critical gases.
Beware of hot surfaces
The filtered gas can be very hot and thus heat up the filter's surfaces. Do not
touch hot surfaces. Wait until the surfaces have cooled down before starting
work on the filter.
Safety notes on specific operating phases
Notes on critical gases
All explosive, flammable and poisonous gases of fluid groups 1+2 as per
pressure equipment directive 97/23/EC are referred to as critical gases.
The release of a critical gas can pose a considerable risk to man and
environment and must therefore be prevented by all means:
—
The operator must implement appropriate safety precautions.
—
Flush the respective pipe section and the filter with an inert gas prior to
all work that could result in critical gas being released. Then depressurise
the filter and carry out the work.
—
Verify the absence of an explosive atmosphere (in line with the
operator’s Directives); if necessary, cancel the EX zone first. Start work
only then..
Make sure to heed the notes on hazardous substances for the used gas
when filtering a critical gas!
