LNG Project - Crane Hydraulics
Melbourne was contracted by one of Australia's leading crane
manufacturers to supply 4 hydraulic powerunits (HPU's) and
associated valving to power their luffing jib cranes. These cranes
form part of a large liquid natural gas (LNG) project in
The HPU's were designed, manufactured and tested in-house at
HYSPECS premises in Dandenong, VIC before being shipped. The cranes
operate in a hazardous area defined as IEC Ex Zone 2, so the
electrical equipment supplied was required to meet this standard.
To reduce the electrical explosion proof content with its high
costs a hydraulic pilot system was designed to operate the crane
and control the working limits.
Due to environmental conditions each HPU is totally enclosed
with maintenance access through two removable front panels. Tandem
variable displacement piston pumps close coupled to a 37kW electric
motor supply the hydraulic power necessary to drive the winches and
Custom designed manifold blocks, manufactured by HYTECH (Hyspecs
Technologies) in Auckland, reduced the hydraulic footprint and
complexity of piping. High quality hydraulic components from Eaton,
Walvoil and Hydraforce was used for maximum reliability and
With branches in Melbourne, Auckland and Christchurch we have
the resources to offer complete turnkey hydraulic solutions for
your next project.