Oil level measurement is affected by water lying on floating roofs. Inaccuracies of the oil level and oil-water interface measurements. Thus, where water is present, the accuracy to which the mass of oil stored can be calculated is related to the combined (surely no better than 1/2 inches) is more relevant than the accuracy of the oil level measurement. However, if water is present in the tank, the accuracy to which the oil water interface can be measured Tank oil level measurement to an accuracy of 1/16 inches is claimed by some level gauge manufacturers in Europe. With the exception of some plants where hydrostatic tank gauging is installed, the calculation of the mass of oil stored is Product volumetric and mass- measurement errorsĪn accurate mass-balance measurement system is essential in determining oil losses and pinpointing where they occur.Product degradation caused by microbial growth.In tankage caused the following problems: The survey revealed that the presence of water Other companies do not insist on the presence of an operator during the entire time a tank is being drained. Most of the oil companies require an operator to be present when the water is drained.īut these companies are also concerned about the toxic fumes that can be released when draining, Some of the refineries and storage terminals surveyed are testing techniques other than theĮxperienced eye of an operator to determine when oil and not water is draining from the tank. How tanks should be gauged for oil and water and how they should be manually drained. Some companies are aware of the need for a consistent approach to tank management and are setting internal standards on It also became apparent that there are wide differences in the way tanks are managed – not onlyīetween different oil companies but also between refineries owned by the same company. Growing environmental pressures, particularly in the US and EU, resulted in increased interest in the issue. Largely solved by nothing more advanced than an operator opening the drain valve and closing it when he sees the appearance of oilĭiscussions were held with operations supervisors, oil loss and environmental engineers, and off-site designers.Īn increase in the awareness of the problems associated with water in tankage was evident after the discussions. THE REMOVALof water from hydrocarbon products in storage tanks have been a constant problem in the oil industry.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
January 2023
Categories |