Crude oil – Any liquid CH mix occuring naturally in the earth, whether or not render it suitable for transportation.
refined product – Mixture of naturally occurring hydrocarbon that is refined into diesel ,gasoline ,heating oil ,Jet fuel kerosene or literally thousands of other products called petrochemicals.
Spiked crude – crude oil blended with liquefied gas or condensate.
Sour crude – sour crude oil is a crude oil containing a high amount of impurities sulphur . when the total sulphur level in the oil is more than 0.5 % the oil is called sour.
Reid vapour pressure – Reid vapor pressure is a common measure of the volatility of gasoline and other petroleum products. It is defined as the absolute vapor pressure exerted by a liquid at 37.8 °C as determined by the test method ASTM-D-323, which was first developed in 1930 and has been revised several times.
Pour point – The pour point of a liquid is the temperature below which the liquid loses its flow characteristics. In crude oil a high pour point is generally associated with a high paraffin content, typically found in crude deriving from a larger proportion of plant material.
Threshold limit value –Threshold limit value of a chemical substance is believed to be a level to which the worker can be exposed day after day for working lifetime without any adverse effect.
Lower flammable limit- It the concentration of hydrocarbon gas in air below which the mixture becomes too lean to initiate of propagate combustion.
Upper flammable limit – it is the concentration of hydrocarbon gas in air above which the mixture becomes to take ostrich to initiate of propagate combustion.
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