Vetter Pipe and Test Sealing Bags - Manual (Page 14)

Vetter Pipe and Test Sealing Bags
Page 14/33
4.8 Construction of a temporary bypass
Persons can be endangered by sudden inrushes of water, therefo-
re an additional pipe sealing bag (2) must be installed in order to
ensure the safety of the construction area. The safety regulations
and information issued by the corresponding authorities are to
be observed!
Construction of a temporary bypass
(schematic diagram)
Due to presentation reasons, the support structure and securing
lines are schematically presented and simplified.
9 Fit the corresponding bypass adapter in order to bypass the
sealing bag.
9 Insert the bypass bag (1) at the top of the construction site
into the pipe.
9 Support the bag according to shape.
9 Connect the Storz coupling (A resp. B) to the suction pump
installed above ground via the suction hose.
9 Make certain that the level of dammed liquid does not exceed
5m water column.
9 Connect a hose to the pump on the pressure side and position
it into the pipe system at the back of the construction site.
9 Insert an additional pipe sealing bag (3) in order to avoid a
backflow into the construction area.
5. Maintenance and care
This chapter gives you information about care of your Vetter pipe
and test sealing bag and the maintenance intervals which must
be observed.
5.1 Maintenance intervals
A function test of the safety valve must only be carried out
without the pipe and test sealing bag. Maximum pressure area!
A function test of the safety valve with the pipe and test sealing
bag outside the pipeline or test pipe can cause bursting of the
bag.