NEBOSH PSM Practice Questions - NEBOSH HSE Certificate In Process Safety Management Exam

The automatic tank gauge stuck so the level appeared static, and the independent high-level switch was inoperable because it had been left in a non-working state after testing The tank inlet valve was opened manually by an operator who ignored a high-level alarm that was working correctly contrary to the requirements of the site isolation standard ignoring the findings of the last HAZOP study Lightning struck the tank vent during a thunderstorm while the tank was being filled at the maximum permitted rate without following the site permit-to-work procedure even when the plant is outside its safe operating A corroded tank shell split at the weld seam, releasing petrol below the maximum fill level relying only on informal verbal agreement between shifts without a formal hazard review or documented authorisation