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All oil tankers with a gross tonnage of larger than 150 must have efficient Oil Discharge Monitoring Equipment on board. [3] [4] The oily discharge is sent out to sea through a pump. [5] The oily mixture has to pass through a series of sensors to determine whether it is acceptable to be sent to the discharge pipe. [6]
An outline of key instrumentation is shown on Process Flow Diagrams (PFD) which indicate the principal equipment and the flow of fluids in the plant. Piping and Instrumentation Diagrams (P&ID) provide details of all the equipment (vessels, pumps, etc), piping and instrumentation on the plant in a symbolic and diagrammatic form.
All OWS equipment, new or old, can, in a laboratory setting, automatically separate oil and water to produce clean water for discharge overboard that contains no more than 15 parts per million oil. OWS equipment is approved by testing it with specific cocktails of mixed oil and water.
Piping and instrumentation diagram of pump with storage tank. Symbols according to EN ISO 10628 and EN 62424. A more complex example of a P&ID. A piping and instrumentation diagram (P&ID) is defined as follows: A diagram which shows the interconnection of process equipment and the instrumentation used to control the process.
Oil content meters measure how effective the oily water separators on a ship are functioning. [6] If the OCM computes that the oily discharge is above the 15 ppm standard, the oily water separator needs to be checked by the crew. There are three types of oil that the oil content meter needs to check for and they are fuel oil, diesel, and ...
A water cut meter measures the water content (cut) of crude oil and hydrocarbons as they flow through a pipeline. While the title "Water cut" has been traditionally used, the current API naming is Water Cut Analyser or WCA as OWD or On-Line Water Determination is trademarked.
CEMS equipment is expensive and not always affordable for a facility. In such cases, a facility will install non-EPA compliant analysis equipment at the emissions point. Once yearly, for the equipment evaluation, a mobile CEMS company measures emissions with compliant equipment. The results are then compared to the non-compliant analyzer system ...
Downhole oil–water separation (DOWS) technology is an emerging technology that separates oil and gas from produced water at the bottom of the well, and re-injects most of the produced water into another formation which is usually deeper than the producing formation, while the oil and gas rich stream is pumped to the surface.