Author: engineer

pig tracking by transmitter and EPD

Pig tracking tools : EPD and Geophone

NDT - Inspection, piping and pipeline

PIG Tracking tools During my job assignment in pipeline inspection, the most difficult work is monitoring and lead ILI or PIG Inspection. In general, we have 2 types i.e. cleaning pig and smart pig. Cleaning pig consist of low density foam pig, medium density foam pig, high density foam pig, cup pig and brush pig. After the pipeline is cleaned and meet the cleanliness criteria, we launch caliper and MFL or we called smart pig or ILI to inspect the physicals pipeline condition. During the pig operation, the pig is likely to be stuck, stall or blocked by the elbow,[…]

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intelligent pig pipeline inspection-caliper

intelligent pig pipeline inspection – ILI

NDT - Inspection, piping and pipeline

“intelligent” or “smart” pigs In-line inspection (ILI) tools, sometimes called as “intelligent” or “smart” pigs, are advanced inspection technology that used to inspect pipelines for evidence of internal or external defect such as corrosion, laminations, deformations, cracks, or other defects. Pig is short for Pipeline Inspection Gauge. In addition, the pig also makes loud noises, like a pig, during the process of cleaning the inside of the pipe. pig functions to clean dirt or unwanted objects that are feared will interfere with the flow of fluid in the pipe. Therefore pigs are equipped with special components, such as magnets and[…]

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example of minimum required thickness calculation as per ASME B31.4 for pipe

example of minimum required thickness of transporting pipeline as per ASME B31.4

NDT - Inspection, piping and pipeline

ASME B31.4 Design condition A piping designer work to design a transporting pipeline for crude oil from Gathering Station to Tank Farm. He selected the pipe size, pipe material, pipe thickness and make a recommendation to the logistics team to purchase the pipe according to the BOM – Bill of material. First of all, he get the technical data from the Process and Flow Diagrams made by the Process engineer. These data indicate that the pipe size is 18 in, with a design pressure of 300 Psi, design temperature of 194 F and the pipe material specification using carbon steel[…]

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minimum required thickness ASME B31.4-2016 design code

minimum required thickness calculation for transporting pipeline as per ASME B31.4

oil and gas facilities, piping and pipeline

ASME B31.4 design code for transporting pipeline In general, there are 4 types of stress that occur in the fluid transporting pipeline. The first is the material stress that occurs due to internal pressure.  The second stress is stress that occurs in the pipe due to the weight of the pipe, the weight of fluid in the pipe as well as the weight of other accessories. The third stress is stress caused by expansion when the pipe is used at high temperatures. The fourth stress come from external load outside the pipe e.g. road and rail traffic loads. The most[…]

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