The Royal National Orthopaedic Hospital NHS Trust has been fined following an incident in which a maintenance worker was badly scalded by steam.
Plant engineer Roger Bunker was repairing a leaking valve on a pressurised pipeline when steam erupted and injured him.
The trust pled guilty to breaching health and safety laws and was forced to pay £15,000 and £2,520 in costs at a hearing at the City of London Magistrates Court.
Health and Safety Executive inspector Dominic Long said that the burns suffered by Mr Bunker as a result of the accident "could have been avoided had the trust put in place the type of rigorous safety procedures demanded by such a high risk work activity".
He added that the trust should have carried out a risk assessment before the work was undertaken.
In related news, a Salisbury-based construction firm was recently fined after one of its employees died in an accident involving a dumper truck.