Two firms fined over ‘life changing’ burns to electricity workers

The two men, who both worked for C&F Electrical Services
Ltd were permanently disfigured while working at Raytheon Systems Limited’s
Glenrothes plant, when a capacitor from the distribution board fell onto a live
conductor causing a ‘flashover’ that severely injured the pair.

Kirkcaldy Sheriff Court heard that on 5 December 2011, the
two C&F employees were on site to carry out replacement work on a T3
distribution board. The two men were replacing two capacitors 12 centimetres
above live conductors housed within the distribution board, known as
busbars. These allow electricity to flow
through the distribution board.

The Health and Safety Executive investigation found that one
of the men, who was standing on a stepladder, lifted the front edge of the
capacitor while his colleague, who was standing on the floor, attempted to push
the board underneath. However, the capacitor is believed to have slipped
backwards into the bay, with its metal casing coming into contact with the top
of the live vertical risers on the right hand side.

That contact created a short circuit and electrical arcs
between the live busbars and the earthed metalwork of the distribution board
itself. The two men were severely burned
on the face, neck and arms by the flashover.

An electrical flashover is characterised by very bright
light, loud noise and exceedingly high temperatures sufficient to vaporise the
metal of the live conductor.

Raytheon Systems Limited, which is registered at Harlow,
Essex was fined £24,000 after pleaded guilty to breaching Regulation 14 of the
Electricity at Work Regulations 1989.
C&F Electrical Services Limited of Poplar Road, Glenrothes, Fife was
fined £20,000 for admitting a breach of the same Regulation.

Health and Safety Executive inspector, Kerry Cringan, who
investigated the case said: “The failure by both C&F Electrical Services
and Raytheon Systems to plan the work on the electrical distribution switchgear
has resulted in two employees suffering life changing injuries from an
electrical flashover.

“Live work should only be undertaken if it is unreasonable
to make the conductors dead and suitable precautions are taken to prevent
injury. In this case, it was reasonable to undertake the work while
the distribution board was switched off which would have reduced the risks so
far as was reasonably practicable and prevented the accident.”