After a leak of liquid petroleum gas was discovered by a worker, IMCA provides lessons learned through this incident that resulted in an uncontrolled release of around 15 tonnes of LPG.
The UK Health and Safety Executive (HSE) reports that the operator of the UK’s largest oil refinery has been fined for health and safety breaches after a leak of liquid petroleum gas (LPG) was discovered by a worker cycling home at the end of their shift.
The incident
There was an uncontrolled release of around 15 tonnes of LPG through a valve near to the main roadway used by LPG road tankers visiting a refinery in Fawley, Hants, UK. The leak went undetected for around four hours before being discovered by an employee on his way home. It took a further hour to establish the source of the leak with on-site emergency personnel having to enter the area to reset the valve.
Probable cause
- LPG was put through the pipe work at too a high a pressure for the valve;
- There was no process in place to detect the discrepancy in the flow in the pipe;
- The company had failed to take all measures necessary to prevent a major incident.
Lessons learned
- The measures required to prevent incidents should be proportionate to the risks. Where companies handle large quantities of substances that can cause major incidents, such as LPG, they are required to have layers of protection in place to prevent incidents.
- The prosecution has been brought to highlight the importance of maintaining the layers of protection and preventing this kind of major leak.
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