Page 179 - MRF Training TJ MRF Manual Version 5 22042024 final April 24_Neat

Edge Protection

Boulders on their own are not suitable as edge protection but they can be used to delineate
haul roads around flat areas of the quarry.

The diagrams show that edge protection should be a
minimum of 1.5m (5 feet) or the radius of the wheel i.e.
half the diameter of the wheel or the axle height which
ever is the larger.

The front profile of the edge protection should be made
so that the vehicle will not drive up and over.

Remember that edge protection can deteriorate due to
weathering, so it must be properly maintained and
inspected under the inspection and maintenance
scheme.

The purpose of the edge protection is to warn the driver that the edge is there. It works by
catching the vehicle or by overturning it back onto the road. To do this it has to be well
constructed and sufficiently large to absorb the momentum of the machine.

Part of the tip and excavation rules will have to determine the size of edge protection you
intend to use and where. HSE guidelines state that it should be 1.5m or the radius of the
wheel whichever is the larger for most use. On ramps etc. you may need to put higher bunds
in place.

Excavations

• A tracked 360 Excavator is used to
remove material for processing either
with a bucket or ripping hook, with a
loading shovel used to load outbound
vehicles or dumper as and when
required for the transportation of
material around the site
• Faces and edges of the quarry shall
be inspected daily by the Quarry
Manager or his deputy, for defects or
dangerous conditions, paying
particular attention to the potential for
block failures; a record of the
inspection, and any necessary action taken, shall be entered in the Daily Inspection
Book. The Manager shall note and countersign the inspection record each day.
• The height of the working face shall not exceed 10 metres and a gradient of 1V:1.5H.
• The excavator shall be of suitable size to be able to excavate and dress the face from
a safe position at the base of the face or bench, protected by a trench, gap or bund
to serve as a "rock-trap".

Page 178 of 181

Reviewed April 2024