Haverfordwest Magistrates Course heard of how 4 deaths were caused in June 2011 from an oil storage tank exploding during maintenance work. Another person was left with serious injuries

Valero Energy UK and B&A Contracts Ltd plead guilty to breaching health and safety laws in connection with an explosion at a Pembrokeshire oil refinery which killed four people.

The charges relate to providing a duty of care to both employees and non-employees.

At the time of the incident the refinery was operated by Chevron Limited, but ownership changed in August 2011.

They are due to be sentenced on 2 November 2018 at Swansea Crown Court.

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Keywords: Training, HSE, Health and Safety, Swansea, Pembrokeshire