Potential Ignition Sources
Potential ignition sources means sources having enough energy to cause ignition. These include high temperature surfaces, sparks or flames from inefficient flanges or joints, electrical discharges caused from electrostatic atmospheres, or electrical contactor faults. Sources of these are for example exhaust gas piping of internal combustion engines, leakages from boiler furnace joints and electrical equipment within oil treatment rooms.
Source: IMO MSC.1/Circ.1321, Guidelines for measures to prevent fires in engine-rooms and cargo pump-rooms, 11 June 2009, International Maritime Organization. Regulatory Guidance