Offshore Safety Notice SN1/2009: Explosion protected electrical heaters

In a recent incident on an offshore installation, there was an explosion in an open drains tank containing oily water. The tank contained an electric heater which was Ex certified. However, the sheath on the electric heating element had corroded, exposing the conductor. Although the incident is still being investigated, it is thought that this fault led to ignition of flammable material in the tank.

Read Offshore safety notice SN1/2009 in full