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Title: Calibration Of Vertical Cylindrical Storage Tanks By The Optical Reference Line Method Qrlm(), Optical Triangulation Method Otm() And Laser Ranging Method Lrm()
Author: Richard m. Sheppard
Source: 1992 International School of Hydrocarbon Measurement
Year Published: 1992
Abstract: In the past eight years major procedural and technological advances have been made In the area of tank calibration. France has developed and has been using an Optical Trlangulatlon Method which uses the measurement of angles to determine tank diameter. Japan has developed a laser type azimuth and distance measuring system which has been used in the calibration of approximately 200 storage tanks and some vessel tanks. The Optical Reference Line Method (ORLM) was originally perfected in Belgium and is currently an API Standard.

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