Safety notice issued by HSE

HSE has issued a safety notice about the maintenance of industrial uninterruptible power supply (UPS) systems.

HSE has recently carried out several investigations into dangerous occurrences that resulted from a failure of industrial UPS systems at onshore major hazard establishments.

The failure of these industrial UPS systems typically resulted in a loss of power to industrial control systems, emergency shutdown systems and emergency mitigation systems.

The HSE investigations identified in all cases that the original equipment manufacturer’s maintenance instructions did not provide adequate information to allow the continued safe and reliable operation of the industrial UPS systems before the incident.

View the safety notice for full details.