8999146EN: v1 26/02/2020
14
Original instructions (ENGLISH)
Website: www.spearheadmachinery.com
to well exceed; (by possibly 3 metres
(9’ 9”)
; the lowest legal minimum height of 5.2 metres from the ground for
11,000 and 33,000 volt power lines, see Figure 2.1.
DANGER!
All operators must read the following information and be aware of the risks and dangers
involved when working in the vicinity of Overhead Power Lines (OHPL’s).
WARNING!
Fatal electrocution can occur without contacting a power line. Due to the high electrical
potential between the conductors and the ground a flash over can occur from the power line to
any conducting medium within range. Steel cutting machines are ideal conductors.
Wherever possible the safest option is always to avoid working in areas close to OHPL’s. Where unavoidable,
all operators must perform a risk assessment and implement a safe procedure and system of work, see Section
2.31 below.
All operators should perform a risk assessment before operating any reach arm mower within 10m horizontal
distance of any OHPL’s. If you are unsure do not work in the area. Never put yourself or others at risk.
2.3.1
Risk Assessment
Before starting to work near OHPL’s you should always assess the risks. The following points should be
observed;
•
Know
the risks of contacting OHPLs and the risk of flashover.
•
Always
find out
the maximum reach height for your machine mounted on the tractor.
•
Always
find out
the location and route of all Power Lines within the work area.
•
Always
find out
the operating voltage of all Power Lines within the work area.
•
Always
contact
the local Distribution Network Operator (DNO) who will be able to advise you
on the operating voltage, exclusion zones, the minimum safe working distance and any
additional precautions required.
•
Never
attempt to
operate the machine within an exclusion zone.
•
Always
work with extreme caution and plan your work ahead
to avoid high risk areas.
•
If doubt exists
do not work in the area
– never risk the safety of yourself or others
Further information and leaflets on this and other agricultural safety subjects are available on the ‘Health &
Safety Executive’ website at the following address:
www.hse.gov.uk/pubns/agindex.htm
2.3.2
Emergency Action for Accidents Involving Electricity
•
Never touch an overhead line - even if it has been brought down by machinery, or has fallen.
Never assume lines are dead.
•
When a machine is in contact with an overhead line, electrocution is possible if anyone touches
both the machine and the ground. Stay in the machine and lower any raised parts in contact or
drive the machine out of the lines if you can.
•
If you need to get out to summon help or because of fire, jump out as far as you can without
touching any wires or the machine keep upright and away.
•
Get the electricity company to disconnect the supply. Even if the line appears dead, do not
touch it - automatic switching may reconnect
