Vetter Pipe sealing bags and bypass bags FS - Manual (Page 12)

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Pipe Sealing- and Bypass Bags
5. Maintenance and care
This chapter gives you information about care of your Vetter pipe
sealing- and bypass bags and the maintenance intervals which
must be observed.
5.1 Maintenance intervals
A function test of the safety valve must only be carried out wi-
thout the pipe sealingand bypass bag. Maximum pressure area!
A function test of the safety valve with the pipe sealing- and/or
bypass bag outside the pipeline or test pipe can cause bursting
of the bag. The function test of the pipe sealing- and bypass bag
at the maximum operating pressure in the permitted maximum
pipe diameter must only be carried out in a resistive pipe. A pipe
which is too weak will explode when a bag is inflated to the maxi-
mum operating pressure!
When? What? What is to be done?
After each
operation
Pipe sealing- and
bypass bag and ac-
cessories
Check for completeness, perfect condition
and function.
Visual check and function check.
Clean the pipe sealing- and bypass bag with
warm water, a neutral cleaning agent and, if
necessary, with a cleaning brush.
Finally dry it at room temperature.
At least once
per year
Controller Visual check and function check.
Check the functional capability of the cou-
pling, nipple, manometer and safety valve
At least once
per year
Inflation hose Visual check and function check.
Check the functional capability and sealing
of the connection nipple and couplings.
At least once
per year
Sealing bag Visual check and function check.
Check the functional capability of the con-
nection coupling.
Check for cracks and/or cuts, abrasions and
changes in the surface caused by chemical
effects.