ABB SCK, System Manual

Page: 215 / 244

42/23-81 EN Rev. 4 System Manual SCK Gas Sampling System 215
Observation Possible causes Measures
Compressed-air
hose bursts or
compressed-air
pipe cracks
 Pressure controller
defective
 Incorrect pressure set
on pressure controller
 Close gate valve in pneu-
matic box, then wait for all
compressed-air to blow
out completely before ap-
proaching
 Shut down gas sampling
system and secure against
start-up until the cause
has been fixed
Cooling-water pipe
bursts or cracks
 Mechanical damage to
the pipe from outside
 Wait until all cooling water
has run out before ap-
proaching

Shut down gas sampling
system and secure against
start-up until the cause
has been fixed

Do not begin repair work
until it has cooled down
Probe or heat
exchanger cracks
 Mechanical damage
and thermal stress
 Wait until all cooling water
has run out before ap-
proaching
 Shut down gas sampling
system and secure against
start-up until the cause
has been fixed
 Do not begin repair work
until it has cooled down
Probe movement
blocked
 Mechanical damage
 Incrustation
 Press EMERGENCY
STOP switch before work-
ing on the probe
 Remove blockage