Any contractor undertaking any sort of excavation work, even if it only involves using hand tools, should carry out a survey of the area in order to locate underground services. There are some 1.5 million kms of underground services running under pavements and highways alone, and in order to repair and maintain these, the utility companies and Local Highways Authorities between them undertake over 3.5 million street works every year.
Despite the fact that contractors use the correct tools – the CAT and Genny – in order to locate buried services before commencing any work, there are still some 60,000 strikes of such services every year. Such accidents can result in serious injuries and are sometimes fatal.
Striking an electricity cable can lead to arcing of electricity which causes severe burns. Electric shock is also possible but less likely. Cables may be damaged by the sharp point of a tool, or they can be crushed by heavy machinery. If other services are nearby, such as plastic gas pipes, these can be damaged by live electric cables which have been hit, and there is the risk of explosions and fire.
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