The linear velocity of flow of liquid in a pipeline, measured in metres per second (m/s). The determination of the Flow Rates at locations within cargo pipeline systems is essential when handling static accumulator cargoes. … [Read more...]

The lowest temperature at which a liquid gives off sufficient gas to form a flammable gas mixture near the surface of the liquid. It is measured in a laboratory in standard apparatus using a prescribed procedure. … [Read more...]

A battery operated hand lamp. An approved flashlight is one which is approved by a competent authority for use in a flammable atmosphere. Also referred to as ‘Torch’. … [Read more...]

The range of hydrocarbon gas concentrations in the air between the lower and upper flammable (explosive) limits. Mixtures within this range are capable of being ignited and of burning. Also referred to as ‘Explosive range’ … [Read more...]

A portable or fitted device incorporating one or more corrosion resistant wire woven fabrics of very small mesh which is used for preventing sparks from entering a tank or vent opening or, for a short time, preventing the passage of flame. (Not to be confused with ‘Flame arrester’). Capable of being ignited and of burning. … [Read more...]

A permeable matrix of metal, ceramic or other heat resisting materials which can cool a deflagration flame, and any following combustion products, below the temperature required for the ignition of the flammable gas on the other side of the arrester. … [Read more...]