gauging plate diameter pipelines piping and fluid
Generally sized to 95% of the pipeline internal diameter (95% nominal or 95% minimum, dependant on specification being used), the gauge plate tends to be made of a soft metal such as aluminium and is chamfered on the leading edge. It is common to "petal" the gauge plate with short, radial cuts to minimise the risk of the pig becoming stuck.
ASME B31.4 Liquid Petroleum Transportation Piping Systems ASME B31.5 Refrigeration Piping ASME B31.8 Gas Transmission and Distribution Piping Systems ASME B31.9 Building Services Piping ASME B31.11 Slurry Transportation Piping Systems ANSI/AGA Z223.1 National Fuel Gas Code (same as NFPA 54) AWWA C 100 Cast-Iron Pipe, Fittings Gauging Plates - Pipeline Pigging Products,Pig Equipment Nov 27, 2019 · Nov 27, 2019 · Gauging plates, offered in both aluminum and carbon steel, are used in conjunction with steel pigs to prove pipe roundness and to ensure excessive weld penetration or debris does not exist in the line, as well as, proving minimum bend radius prior to intelligent pig runs. Gauging plate o.d.s range anywhere from 90% to 95% of the internal diameter of the pipe and can also have
Gauging pig dimensions - Pipelines, Piping and Fluid Sep 08, 2014 · Gauging pig dimensions. A Natural Gas Pipe line is constructed with several ( 24 Nos) 18"NB 6D hot induction bends for thermal expansion loops . The Induction bends are tested with gauge plates at the time of manufacture of bends at shops. The gauging checks at shop used pig with two gauge plates mounted on the tool separated by distance of 300mm with plate size of 95% of Nominal ID of Line Pipe
PIGGING IN PIPELINE PRE-COMMISSIONINGThis plate is machined to a pre-set tolerance diameter (generally 95 97% of the pipeline internal diameter). Any dents, buckles wrinkles or other out-of-roundness features that intrude into the pipeline by more than this will deform the gauge plate. The disk size will depend on the owner's required specification for the
Dec 24, 2019 · Dec 24, 2019 · Gauging is done during pipeline commissioning to ensure that a uniform diameter is maintained along the length of each pipeline. This assessment process is achieved using a pipeline pig device which is fitted with a gauge plate. When a pipeline gauging plate is attached to a pig, it is then referred to as a gauging pig. Depending on the size of the channel to undergo pipe gauging, the plate must correspond to its exact internal diameter to accurately carry out its function. What Is a Gauge Plate Pipeline Pigging - piping-worldDec 26, 2019 · Dec 26, 2019 · They are typically provided with aluminum gauging plates whose diameter is 95% of the pipeline internal diameter. The aluminium plate material deforms if it meets any obstructions like dents, a reduction in diameter within the pipeline or buckles. Aluminium being softer than steel will not cause any damage to the inside surface of the pipeline.
Gauging is achieved by fitting a pig with an aluminium plate, sized proportionally to the minimum internal diameter of the pipeline. Steel bodied pigs such as a Bi-Directional Pig or Flexi-Cupped Gauging Pig are often used for pipeline gauging. These pigs are fitted with a combination of polyurethane guide discs and seal discs or cups. Gauging Plate Diameter - Pipelines, Piping and Fluid Jan 09, 2018 · Minimum Pipe Diameter= 100.7 mm Gauging Plate Diameter = 95.7 Difference = 5.03 mm Now, API 1104 specified a maximum of 1.6 mm root weld penetration which will be 3.2 mm (diameter) Final difference = 5.03 - 3.2 = 1.8 mm (0.9 mm each side) 3 gauging plates already passed thorough the pipeline