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The project planning supervisor was also fined £20k plus £21k costs.
The Health & Safety Executive (HSE) prosecuted Birmingham firm DSM Demolition Ltd and Halesowen-based Gould Singleton Architects Ltd (GSA) following the incident on 14 July 2006. A demolition worker was engulfed in flames when he cut through a live 11,000 volt cable at an electricity substation in Worcester.
DSM was demolishing a metal casting foundry in Wainwright Road, Worcester, when employee Lee Harris, 35, was told to cut through a cable that was connected to a switching unit on a substation on the site, which was still live.
As the machine he was using to cut through the cable came into contact with the live conductors, he was engulfed by flames, suffering 20% burns that have left him with permanent disabilities and requiring skin grafts.
HSE's investigation into the incident found that neither planning supervisor GSA nor demolition contractor DSM had made adequate checks to ensure that the electricity on the site had been disconnected.
GSA had told DSM that all services to the site had been terminated when actually the power supply remained live. DSM should have ensured that the electrical services had been disconnected before starting demolition, but failed to do so.
DSM Demolition Ltd, of Arden Road, Birmingham, was found guilty on 26 September 2011 of breaching Section 2(1) of the Health and Safety at Work etc Act. On Friday the company was fined £40,000 and ordered to pay £100,000 costs.
Gould Singleton Architects Ltd, of Whitehall Road, Halesowen, pleaded guilty to breaching Section 3(1) of the Health and Safety at Work etc Act 1974 and Regulation 15(3)(e) of the Construction (Design and Management) Regulations 1994. The company was fined £20,000 and ordered to pay £20,872 costs.
Speaking after the hearing, HSE inspector Tariq Khan said: "Live electricity and gas services pose a serious risk of death or serious injury to demolition workers. It is essential that companies working in this sector take proper precautions to protect their workers.
"Neither of the two companies had made adequate checks to ensure that the power supply to the cable required to be cut by Mr Harris had been terminated. Had they done so then this incident would never have happened and Mr Harris would not have suffered such serious injuries.
"Construction, design and management co-ordinators must ensure that the information they pass on to contractors which could affect the safety of their workers is correct. Likewise, demolition contractors must follow safe systems of work at all times and ensure they check information provided to them about services on site with independent, competent sources."
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