Kessel NS 1 Installation And Operating Instructions Manual page 32

7. Incidents, faults and remedial measures
Leaking chamber structure:
Effect
Sealing gasket for upper section & extension has been
forgotten
Sealing gasket for upper section & extension not greased
Sealing gasket for upper section & extension installed
the wrong way around
Upper section system or extension section has been
drilled into in the area above the sealing system
Upper section has been shortened without chamfer
(conical to aid insertion)
Leaking tank:
Effect
Cable duct fitted without sealing gasket
Cable duct sealing gasket not greased
Cable duct sealing gasket installed the wrong way
round
2x small cable screw connections forgotten or not
tightened by hand or sealing gasket forgotten
1x large pipe screw connection forgotten or not
tightened by hand or sealing gasket forgotten
Inlet and outlet structure leaking
Damaged tank (crack, hole)
Only during general inspection: air pocket between
upper section and tank
Tank dented:
Effect
Wrong filling material used
Wrong compaction
Not filled gradually with water
Wrong load-bearing class
No load distribution plate
Temperatures too high
Dimensions of the excavation pit
Clean layer under the tank
Measure
Install sealing gasket as a retro-fit measure
Remove the sealing gasket again, clean and grease it
Remove the sealing gasket again, clean it and install the
right way around
Replace the upper section
Chamfer the upper section system as a retro-fit measure
Measure
Install sealing gasket as a retro-fit measure
Grease the sealing gasket as a retro-fit measure
Turn the sealing gasket around
Fit cable screw connections as a retro-fit measure
or tighten by hand.
Fit pipe screw connection as a retro-fit measure
or tighten by hand.
Check correct fit of the sealing gasket or replace sealing
gasket.
Replace the tank
Use a hose to eliminate the air pocket
(communicating pipes)
Measure
Use the material recommended in the installation
instructions
Gradual compaction and filling with water
Gradual compaction and filling with water
Compare the load-bearing class of the tank
and the actual vehicles to be driven over it
Check the load distribution plate if necessary for the class
of tank used
Check/reduce temperatures
Note the dimensions specified in the installation
instructions
Horizontal and compacted, see installation instructions
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