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Access platform for drum mixers
CEMEX > Carlisle Concrete Plant, Carlisle > 01768 860816
TRANSPort – ON-HIGHWAY: 7
CEMEX’s area operations manager was concerned about the procedure of entering drum mixers for
cleaning and maintenance. He designed a platform prototype at the Carlisle plant in Cumbria, identifying
the need for such items as:
• a water supply linked to a water meter
• a 110-volt power point for power tools and a 12-volt supply for lighting
• airline feed
• signage and light to indicate man in mixer
• ideally location of the bay in view of batch cabin
• all hoses and cables on retractable reels
• two way radios aiding communication with the driver in the drum
• pipe lagging material for covering sharp edges
• access at two levels.
The prototype was reviewed by truck operators, transport representatives and regional staff, and minor
alterations made. CEMEX is considering accepting the design as the best practice across its UK operations.
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Safer volumetric concrete delivery
CEMEX UK Materials > Glasgow > 0191 378 7711
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CEMEX conducted a series of trials with a volumetric vehicle
in order to determine potential operational benefits. As part
of this process, operational and maintenance personnel
began to identify potential hazards and to look at where
these could be reduced or eliminated.
Hazards were identified relating to working at height,
dangerous moving parts, manual handling, access/egress,
and pedestrian and cyclist safety. Improvements included
developing a full emergency stop system, which stops the
control circuit, the “donkey engine” and the vehicle engine; the addition of further guarding from moving
chain drives and conveyors; and fitting a magnetic stop switch to the hinged ladder to prevent access to
aggregate hoppers with either the truck or donkey engine running.
Truck mixer entry hatch
Tarmac Northern, Lanarkshire > 01698 575503
A new truck mixer entry hatch is preventing the need for drivers to
enter drums through the loading point away from the depot and the
sight of the depot supervisor.
The largest obstacle was the number of bolts which had to be undone
before the removal of the inspection hatch door. In conjunction with
its drum manufacturer, came up with the solution of a hatch with only one bolt. The original version was
built in 2003 and fitted to an 8 cubic metre drum. This also included an easy access, fold down platform,
which eliminated any requirement to use steps or ladders. The drum manufacturers also launched a
lightweight version for 3 cubic metre trucks in March 2005.