ABB SCK - Safety Measures: Maintenance and Troubleshooting

80 System Manual SCK Gas Sampling System 42/23-81 EN Rev. 4
Danger Where / in what situa-
tion does the danger
arise?
Preventive action
Risk of burning due
to hot surfaces
The gas sampling sys-
tem is very hot during
and after operation of
the gas sampling sys-
tem, particularly:
 the cooling module
 the heated sample
gas lines
 the connection box
for the heated sample
gas line on the retrac-
tor
 the heated sampling
filter
 the entire gas sam-
pling probe
 the metal structure of
the retractor
 the shutter of the duct
opening
 Do not touch the gas sam-
pling system during and af-
ter operation.
 Do not touch the gas sam-
pling system until it has
cooled down to less than
50 °C.
 If it is unavoidable to touch
during operation, wear a
face mask against heat,
heat-proof gloves and pro-
tective welder's clothing.
Risk of burning due
to falling or spalling
material.
After the probe moves
out of the rotary kiln, hot
material may fall or spall
off the probe.
 Never enter the danger
area around the retractor
during operation.
 Do not approach the re-
tracted probe until it has
cooled down.
 If it is unavoidable to ap-
proach the hot probe, wear
a face mask against heat,
heat-proof gloves and pro-
tective welder's clothing.
Risk of burning due
to hot surfaces, hot
gases, jet flames
At the duct opening
when inspecting and
cleaning the wall tube
 Preferably inspect the wall
tube when the rotary kiln is
out of operation.
If you check or clean the wall
tube when the rotary kiln is in
operation:
 Wear a face mask against
heat, heat-proof gloves and
protective welder's clothing
and respiratory protection
against toxic gases.
 Keep the time in which the
duct opening is open as
short as possible.