Vetter Pipe and Test Sealing Bags - Manual (Page 11)

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Support suggestion for a pipe opening on the outside
wall (presented as a diagram)
1 Outside wall with pipe opening
4.3 Blocking a pipeline
The support structure of a pipeline under pressure must never be
removed. Pipe sealing bags and test sealing bags could suddenly
catapult outwards. During a pressure test nobody is permitted to
remain in the shafts or on and in the pipelines under pressure.
9 Vetter pipe sealing bags are used in different pipe diameters
(refer to the marking on the sealing bags).
9 Select pipe sealing bag, inflation hose, controller and air sour-
ce.
9 There must be no branches, house connections or similar
things in the pipe area to be blocked.
9 Connect pipe sealing bags to the inflation hose and controller
and position in the pipe.
9 Inflate the pipe sealing bag to the permitted maximum opera-
ting pressure from a safe position.
9 If a pipeline has to be blocked with a pipe sealing bag or test
sealing bag then the operating pressure is to be monitored
with the controller (e.g. possible pressure changes caused by
deviations in temperature).
Due to presentation reasons, the support structure is schemati-
cally presented and simplified.