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4.2 Maintenance intervals
Perform functional checks of the cone pipe stopper at full operating pressure in the maximum permissible pipe
diameter in a resistant pipe only. A weak pipe will be burst by the stopper when it is inflated to maximum oper-
ating pressure.
When?
What?
What action?
Who?
Before each use
Cone pipe stopper,
control devices and filling
hoses
(safety equipment)
Check for completeness
Visual check
of the cone pipe stopper filled to max. 0.2 bar
and the safety equipment (e.g. for deformation, cracks,
damage to fabric, porous surfaces etc.)
Functional check
of the safety equipment
Expert*
If there are any safety concerns after the visual check of
the cone pipe stopper, the stopper should be sent to the
manufacturer for a more thorough
functional check
.
Manufacturer
After every use
Cone pipe stopper,
control devices and filling
hoses
(safety equipment)
Check for completeness
Visual check
of the cone pipe stopper filled to max. 0.2 bar
and the safety equipment (e.g. for deformation, cracks,
damage to fabric, porous surfaces etc.)
Functional check
of the safety equipment
Expert*
If there are any safety concerns after the visual check of
the cone pipe stopper, the stopper should be sent to the
manufacturer for a more thorough
functional check
.
Manufacturer
At least
once a year
(otherwise, according
to BGI 802, use of the
stoppers is prohibited)
Cone pipe stopper,
control devices and filling
hoses
(safety equipment)
Check for completeness
Visual check
of the cone pipe stopper filled to max. 0.2 bar
and the safety equipment (e.g. for deformation, cracks,
damage to fabric, porous surfaces etc.)
Functional check
of the safety equipment
Expert*
If there are any safety concerns after the visual check of
the cone pipe stopper, the stopper should be sent to the
manufacturer for a more thorough
functional check
.
Manufacturer
After every repair
Cone pipe stopper,
control devices and filling
hoses
(safety equipment)
Check for completeness
Visual check
of the cone pipe stopper filled to max. 0.2 bar
and the safety equipment (e.g. for deformation, cracks,
damage to fabric, porous surfaces etc.)
Functional check
of the safety equipment
In addition, a
functional check
of the stoppers must be
carried out at operating pressure in the pipe. The stopper
is pressurised with 1 bar in the maximum permissible pipe
diameter. The stopper remains in the pipe for 60 minutes
following a holding time of 5 minutes. Once these 60 minu-
tes have elapsed, the pressure loss must not exceed 10 %.
Expert*
We recommend having the devices checked by the manufacturer every five years.
Small cracks or cuts in the material (max. 6 cm) can be repaired using the Vetter repair material kit (article no.
1420005500), without problems. See separate operating manual.
Document and file the test results.
If any doubts concerning safety arise during the visual and/or functional check, abort the test and send the
stopper together with the equipment to the manufacturer for further testing.
