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Corrosion loop(s) are systematized analysis "loops" used during Risk-based inspection analysis. Both terms “RBI Corrosion loops” or “RBI corrosion circuits” are generic terms used to indicate the systematization of piping systems into usable and understandable parts associated with corrosion.
Steel for pipe and tube: ... API Tubing and Casing: H40 ... Steel classification according to EN 10027-2.Free searchable database "European steel and alloy grades"
Drill pipe is most often considered premium class, which is 80% remaining body wall (RBW). After inspection determines that the RBW is below 80%, the pipe is considered to be Class 2 or "yellow band" pipe. Eventually the drill pipe will be graded as scrap and marked with a red band. Drill pipe is a portion of the overall drill string.
The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water: if its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and sinks.
Classification of materials based on permittivity ε r ″ / ε r ′ Current conduction Field propagation; 0: perfect dielectric lossless medium ≪ 1: low-conductivity material poor conductor: low-loss medium good dielectric ≈ 1: lossy conducting material: lossy propagation medium ≫ 1: high-conductivity material good conductor ...
Classification is the process in which ideas and objects are recognized, differentiated, and understood, and classification charts are intended to help create and eventually visualize the outcome. According to Brinton "in a classification chart the facts, data etc. are arranged so that the place of each in relation to all others is readily seen.
If the template has a separate documentation page (usually called "Template:template name/doc"), add [[Category:Wikipedia classification templates]] to the <includeonly> section at the bottom of that page.
Pipe drift is a measure of the roundness or eccentricity of the inside wall of a pipe. "API drift" refers to primary specifications set forth in API Specification 5CT (ISO 11960), "Specification for Casing and Tubing". "Alternate drift" refers to alternate drift specifications listed in API 5CT.