Workers poisoned in carbon monoxide release

Date:

7 April 2011

Release No:

YH/60/11

Three Sheffield workers were almost overcome by fumes when a decontamination unit began to fill with deadly carbon monoxide, a court heard.

The men were part of a five-strong team working in an asbestos enclosure on a demolition site in Huddersfield in November 2009. After working for 90 minutes, each left the enclosure to go one at a time through a three-stage decontamination unit (DCU).

Huddersfield Magistrates' Court heard the workers would begin at the 'dirty end' of the DCU and dispose of overalls, enter a second stage including showers and washing of their respiratory equipment, before the final 'clean' section to finish and change into normal clothes.

The Health and Safety Executive (HSE) prosecuting told the court the first two workers passed through each of the stages successfully but the next three men were nearly overcome by dizziness and nausea. All three were sent to hospital where tests showed they had suffered carbon monoxide poisoning.

The three workers, Richard McKearnen, 59, Tony Deakin, 50, and Paul Wainwright, 49, all from Sheffield, were treated with high-flow oxygen therapy at Huddersfield Royal Infirmary and released later the same day.

The court heard the DCU used a gas boiler to provide hot water for the shower. HSE tests on the boiler showed poor maintenance meant it was pumping out high levels of carbon monoxide. In addition, a door seal and lock between the boiler compartment and 'clean' sections of the unit were damaged, leading to poisonous gases being drawn into the clean end.

The contractor and owner of the DCU, Newlincs Services Ltd, of Dudley Street, Grimsby, pleaded guilty to breaching Section 2 (1) of the Health & Safety at Work etc Act 1974. The company was fined £5,000 and ordered to pay £3,580 in costs.

Inspector David Stewart, who investigated the case for the HSE, said:

"Carbon monoxide can be a silent killer in the home and, as this case demonstrates, also in the workplace. It is essential that any appliances such as gas boilers and heaters, which can generate this gas, are maintained on a regular basis to ensure they are operating efficiently and safely.

"Even though these three men spent a relatively short time in the affected part of the decontamination unit, they were left seriously nauseous and dizzy. The consequences of longer exposure could have been fatal.

"A carbon monoxide alarm is effective as a last line of defence but is not a substitute for proper maintenance."

Paul Johnston, chief executive of Gas Safe Register, said:

"We know that carbon monoxide poisoning can kill. Know the symptoms, and make sure gas appliances are properly installed and regularly serviced by a suitable qualified and competent Gas Safe registered engineer."

Registered engineers can be found or checked at www.GasSafeRegister.co.uk or all free on 0800 408 5500.

Notes to editors

1. The Health and Safety Executive is Britain's national regulator for workplace health and safety. It aims to reduce work-related death, injury and ill health. It does so through research, information and advice; promoting training; new or revised regulations and codes of practice; and working with local authority partners by inspection, investigation and enforcement.
2. Section 2 (1) of the Health & Safety at Work etc Act 1974 states that: "...it shall be the duty of every employer to ensure, so far as is reasonably practicable, the health, safety and welfare at work of all his employees."
3. The company breached Regulation 5 (1) of the Provision and Use of Work Equipment Regulations 1988 by not ensuring that work equipment, namely a decontamination unit and water heater, was maintained in a safe condition so as to prevent risk of injury to any person.
4. The company breached Regulation 35 of the Gas Safety (Installation & Use) Regulations 1998 by not ensuring a gas appliance under their control, namely a water heater, was maintained in a safe condition.

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Issued on behalf of the Health & Safety Executive by COI News & PR Yorkshire and the Humber