Rathburn Chemicals in Scottish Borders fined after factory explosion likely caused by chemicals overheating

A firm has been fined more than £40,000 after an explosion at its factory in the Borders was likely caused by chemicals overheating.

The blast at Rathburn Chemicals factory in Walkerburn near Peebles on January 10, 2020 was found to have likely been caused by excessive pentane vapour overheating and being ignited by the site’s extraction system.

A laboratory was destroyed in the process with images at the scene showing extensive damage to the building.

The Health and Safety Executive (HSE) said it was “fortunate” no one was injured by the explosion.

The firm pleaded guilty to breaching the Health and Safety at Work etc. Act 1974. Health and Safety Executive

The investigation found Rathburn Chemicals had an “inadequate system in place which failed to control the amount of steam and heat being generated during its distillation process”.

The company also failed to “adequately detect any signs of overheating which could lead to flammable vapour being ignited”.

The firm pleaded guilty to breaching the Health and Safety at Work etc. Act 1974 and was fined £40,000 and ordered to pay a victim surcharge of £3,000 at Lothian and Borders Sheriff Court on September 20.

HSE inspector Isabelle Martin said: “This was a serious incident and it is fortunate that no one was injured by the blast.

“The explosion could have been avoided had Rathburn Chemicals simply carried out the correct control measures and safe working practices.

“This case also highlights the risks from distilling flammable substances, the need for reliable control measures and adequate training of employees.

“Companies looking for further advice on this issue can find readily available guidance on the HSE website.”

Rathburn Chemicals has been contacted for comment.