PT&P’s Sweco Fab division designed and manufactured a pig launcher and receiver with a flag type indicator and a flanged HI-T Pig Alert pig signaler. They are fabricated from carbon steel with a three coat paint system. The pig launcher has an 8” diameter minor barrel, a 10” diameter major barrel, and is 110” in overall length. The pig receiver has a 10” major barrel, a GD II Closure and is 170” in overall length. They are designed for 430 psig at 100°F and were hydro-tested at 645 psig , held for four hours. Both pig launcher and receiver went through a 100% radiography test prior to shipment.
Pig Launchers and Receiver > Blog Articles
The pig launchers and receivers were designed for a coal-bed methane gas production facility in Colorado. They are equipped with an integral safety locking system which works on the principle of mechanical key interlocking (transfer of keys). This system avoids serious injuries from human error and insures safety of personnel.
One starter key per launcher/receiver is kept in a box located in the control room. Each lock is executed with two keys. When the first valve is opened with this starter key, it releases the second key. This key is transferred to next valve which releases second key from that valve and so on and so forth. This process guides the operator through the specified sequence for opening and closing valves with unique a key for each step.
Both pig launcher and receiver are fabricated from various low temperature carbon steels. They also include a GD Closure built to ASME Section VIII specifications. The operating temperature range is from -35°C to 65°C. The receiver is 33′ long and the launcher is 20′ long. Both have a 24″ diameter major barrel feeding into a 16″ diameter minor barrel. A rugged three coat paint system was applied per customer specifications. Various tests were performed, from hydrostatic and dye-penetrant to full radiography and ultrasound.
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The three pig launchers measure 127″, 172″, and 189″ in length and are designed for 263 PSIG at 185ºF. The pipe diameters of each unit measure 10″, 18″, and 20″, respectively. Two of the pig launchers/receivers are fabricated from carbon steel and one from stainless steel. All of the launchers/receivers were hydro-tested to ensure product quality.
SWECO Fab, Inc. manufactured a pig launcher and receiver used to launch a pig throughout the piping system to clean the pipe line. Both the pig launcher and receiver have been hydro-tested to ensure quality and performance. Multiple coats of paint were also applied for environment protection.
These pig launchers were manufactured from carbon steel. They have a 16 major barrel, 12 minor barrel and measured 121 long. The pig launchers and receivers are used for cleaning piping systems. In addition, the pig launchers and receivers were designed for pressures of 512 PSIG at 100F. Hydro-tests were performed at 666 PSIG and x-ray tests were completed to ensure quality performance.
The launchers and receivers, with dimensions of 24″ x 30″ x 138″ long and 10″ x 14″ x 132″ long, are designed for 740 PSIG at 170 degrees. One of the Pig Launchers and Receivers composed of a 24″ dia. minor barrel and a 30″ dia. major barrel, while the other one consisted of a 10″ dia. minor barrel and a 14″ dia. major barrel. The major and minor barrels are fabricated from API 5L X 52. To ensure quality, the Launchers and Receivers were 100 % x-rayed and hydro-tested prior to shipment.
Pig Launchers and Receivers are installed in pipelines to launch and receive Pipeline Pigs. Pigs can be used for the cleaning of pipelines. In addition, Pigs can be used for the separation of two products within the same pipeline. Sweco Fab/Piping Technology & Products, Inc. has over 40 years of experience in designing and manufacturing a wide variety of ASME/Misc. Fabricated Products – including Pig Launchers and Receivers.
Sweco Fab, Inc. recently fabricated a Pig Receiver Class 600 with saddle supports for an industrial company in Texas. The pig receiver is composed of a 24 dia. minor barrel and a 30 dia. major barrel with 1 thick walls. It is approximately 250 in length and weighs 8,200 lb. The major and minor barrels are fabricated from API-5L Gr.B, X42 and SA106B material, respectively. All other items are fabricated from SA105, SA106B, and SA-36 as applicable. The receiver is designed per ASME B31.8 with a 0.72 Design Factor and NACE MP-01-75. The design pressure is 1480 PSIG at 125°F.
Sweco Fab, Inc. designed and manufactured pig launchers and receivers for an oil and gas exploration and production company in Venezuela.
The launchers and receivers are designed with a 6 line and 8 barrel at 60 long with a 4 kicker, ¾ in. P.I., 2 vent and drain design per ASME B31.4. They are made to withstand 1480 PSIG at 100ºF and can accommodate 15 pigs. They were painted inside and out per System 6E grey color and included simple skid, MTR, N.D.E., and flange protectors.
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Sweco Fab, Inc. manufactured 4″ pig launchers and receivers for a water reclamation plant in Savage, Maryland.
These launchers and receivers are to aid in the utilization of an oxidation ditch activated sludge process designed for nitrification / de-nitrification and phosphorous removal. The design consists of components such as T-bolt closures, side outlet tees and 4″, 150-psi flanges with protectors. After being built to ASME, Sect. VIII, Div. 1, the launchers and receivers were shop prime painted to prevent against corrosion.