Abstract
One of the roles of the surveying engineering is Dimensional Control. The term sets out a broad spectrum of issues related to industrial installation measurement and is used most often for petroleum industry. Typical procedure performed here is determining the position of steel flange and its deformation. These issues are particularly important while working with objects undergoing construction, where prefabricate set needs to be fitted perfectly. A perfect example is an offshore oil rig, where due to the large number of high-pressure installations containing hazardous liquids, gases and chemical substances, works such as cutting and welding can be potentially dangerous. Joining the installation with the help of flanges and bolts does not involve such risk and simplify the renovation or the reconstruction process, without any losses related to the drilling halt. Classic surveys are important part of the process due to high cost of preparation and transport of installations built on land, as well as significant consequences of the possible mismatch of prefabricated set. Determination of dimensions and existing deformations of the target platform’s installation together with monitoring high compliance of prefabricate set with the project, which is being built, is a complex task. High, sub-millimeter precision while determining measured flange deformation is a key factor, decisive in joining the existing elements. Providing precise measurements translates to flange’s sealing properties due to low level flexibility of a prefabricated sets. There are no official records stating in what way such measurements and calculations should be performed. Terminology applied can differ depending on the location, internal standards of the company or habits of the person relying on the results. In the following publication terminology and methodology of the measurement process was based on the experience of surveyors performing works of this type for the purposes of companies from Great Britain. Since no relevant source of scientific data
Highlights
One of the roles of the surveying engineering is Dimensional Control
The term sets out a broad spectrum of issues related to industrial installation measurement and is used most often for petroleum industry
Typical procedure performed here is determining the position of steel flange and its deformation
Summary
One of the roles of the surveying engineering is Dimensional Control. The term sets out a broad spectrum of issues related to industrial installation measurement and is used most often for petroleum industry. Typical procedure performed here is determining the position of steel flange and its deformation. These issues are important while working with objects undergoing construction, where prefabricate set needs to be fitted perfectly. Classic surveys are important part of the process due to high cost of preparation and transport of installations built on land, as well as significant consequences of the possible mismatch of prefabricated set. Determining the direction in which face is directed to is significant It is defined in different ways, depending on the flange position. –– defining flange position and its Tie Point coordinates, –– defining face deflection to original or design direction Edge’s 3D coordinates ection and bolts diameter will be treated as direct measurement result in the following calculations
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