The tasks a Blender (Petroleum Refining) is expected to perform include:
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Controlling equipment to blend straight run of natural gasoline with chemicals, tetra-ethyl leads, and light distillates of crude oil to produce commercial fuel, according to formula
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Reading blending schedules specifying components and quantities to be blended
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Turning, controlling, to open valves and starting pumps or directing pump man to transfer
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gasoline to blending tanks
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Completing the amount of addition or setting the weighing machine that automatically weighs quantities of additives in ratio to quantity of gasoline
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Turning hand wheel to open valves to spray jets to admit and circulate specified quantities of gasoline, additives and chemicals in mixing tanks
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Moving the controls of pumps, agitators and mixtures to blend mixture mechanically or with air agitation
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Repeating the blending process
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Regulating and manning the valves, sampling the mixtures for analysis and maintaining records