A principal contractor and subcontractor have been fined after an employee’s retina was damaged by an explosion caused by a cable strike during construction works at a substation.
Manchester Magistrates’ Court heard how VolkerInfra Ltd, a high voltage cabling contractor, had been subcontracted by principal contractor Siemens Energy Ltd to carry out cabling works as part of a wider construction project at Whitegate Substation in Chadderton, Manchester.
On the 17th September 2019, an employee of VolkerInfra Ltd, who was excavating phases for laying a 275kV cable, struck an existing live cable close by with the excavator. The contact resulted in multiple explosions which caused blistering to the driver’s retina.
An investigation by the Health and Safety Executive (HSE) found the permit to dig had not been properly completed by Siemens Energy. It was also found neither they, nor the subcontractors had checked the cable markings prior to work commencing. The existing live cable had not been adequately identified and so the markings for the cable location were incorrect by around 50cm. It was also found there had been inadequate monitoring and supervision of work.