Winner of the WorkSafety Invention of the Year 2017
Every year WorkSafe recognise outstanding OSH management, solutions and innovation in
Western Australian workplaces.
The Lifting Company were engaged by Fremantle Commercial Diving to provide a turn key
solution for a working at heights application for cleaning and inspection services to potable
water tanks across WA and further afield.
These large tanks often have varied levels of fall prevention in place and Fremantle
Commercial Diving wanted to provide their workers with a reliable fall arrest and rescue
They consulted with The Lifting Company and after significant research and development,
the Skyhook Mk IV was designed and built. The Skyhook MkIV is a unique truck-mounted
fall arrest and rescue system.
The tanks have varied levels of fall prevention systems ranging from stairway access
including large working platforms and handrails, to a ladder and roof only with no inbuilt
safety systems present. Working at height and rescue plans need to be generated at each
site specific to each tank and rely heavily on the integrity of the tank stand and tank. Many
of these assets are approaching the end of their design life and almost all of them are
unique in their construction. Creating safe systems of work at each tank utilising the existing
tank infrastructure is often challenging and time consuming and requires a very high level of
skill and experience in the dive team. Site based risk assessments are critical in this
The most problematic style of tanks from a working at heights perspective, are platform
elevated tanks which generally around 15 m high and consist of a small tank located atop
an elevated platform.
FCD engaged with Water Corporation, a major asset owner of these tanks, to gauge their
acceptance of and support for the concept. Water Corporation undertook their own due
diligence and eventually came back in full support of the project offering advice and
assistance where required. When the decision was taken to progress to the build stage
TLC engaged with WorkSafe WA early in the construction process to ensure the device
would meet and exceed all required standards.
The SkyHook project from concept, through the design phase and to field deployment was
undertaken through FCD’s management of change process with all internal and external
stakeholders identified and involved as required. This included clients, regulators, suppliers
and end users. TLC consulted widely with multiple industry suppliers and training providers
during the construction of the SkyHook Mk IV to achieve industry first outcomes including
accredited training for all FCD operators prior to use.
The SkyHook is a unique truck mounted mobile fall arrest system, the first of its kind to be
designed and built.
Designed and manufactured to AS1891 and AS5532, the SkyHook has a reach of 25 m
high and13 m radius. In a scenario where there is no WAH and/or rescue equipment
installed on an asset or the available equipment is deemed inappropriate for use, the
SkyHook MkIV provides a rated overhead anchor point for 2 persons (272 kg). The
SkyHook has two 10 m LinQ Self-Retracting Inertial Reels attached to enable WAH in
limited free fall at all times.
In addition to rated WAH anchor points, the SkyHook also provides a rated overhead
anchor point suitable for rescue recovery of an injured person. This anchor point can be
used with the factory installed Harken Lokhead INLH500 rescue winch built into the
SkyHook, or alternately can be used to attach a RescueMaster or similar device.
Both FCD and TLC believe the SkyHook breaks new ground for innovation in an area where
there is potential to prevent a significant number of injuries or deaths. The project has
required extensive engineering and problem solving to reach the point of final delivery. We
believe this device sets a new standard for “as low as reasonably practical” (ALARP) in
many working at heights situations.
Call us on 9353 4333 to discuss our TLC Skyhook range today, or head to our