Crane is made explosion proof
April 1st 2009 Explosion protection
company Pyroban has
modified a remote controlled
Valla crane, so it can be used
in maintenance operations
at a UK refinery, without
being the source of ignition
in a potentially explosive
atmosphere.
The Valla TRX 20D is a 2t
pick and carry crane which
operates on rubber tracks
with a speed of 2km/h. As a
standard unit, it has many
potential sources of ignition.
In order to make mobile
equipment explosion proof,
Pyroban has to complete a
full mechanical and electrical
assessment to determine
potential ignition sources,
including a full thermal test.
The engine, motors,
switches and many other
components may then have
to be modified using various
explosion proof
technologies.
Pyroban engineers have to
reduce all temperatures
below a specified heat to
prevent auto-ignition of a
flammable hydrocarbon. On
the engine, this means
adding a water-cooled
exhaust gas cooler to limit
the surface temperature.
Following the preconversion
testing, Pyroban
engineers developed an
explosion proof solution for
the complete crane. A kit of
parts was then manufactured
and issued to the
Pyroban assembly line.
Pyroban utilised its system
5000D solution which
includes gas detection.
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