Measure cargo quantity using tank gauging, ullage, sounding, and dipping, calculate volumes using calibration tables, API/ASTM standards, and temperature corrections, Verify ship, shore, and terminal figures during loading and discharge, Witness and record custody transfer measurements. * Take representative samples of petroleum products and chemicals, ensure sampling follows API, ASTM, ISO, or IP standards, check product specifications (density, temperature, appearance, water content), Identify contamination, commingling, or off-spec cargoes.
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