Blog Category: ASME/MISCELLANEOUS FABRICATION

Pig Launchers and Receivers Designed for a Crude Export Pipeline
September 19, 2023

Pig Launchers And Receivers Designed For A Crude Export Pipeline

Sweco Fab., Inc. designed and fabricated pig (pipeline intervention gadget) launchers and receivers with closures for a crude export pipeline in Mexico. Pig Launchers and receivers are pressure-containing vessels or sections of piping within a pipeline system that are utilized for pipeline maintenance, cleaning, and inline inspection for upstream, downstream, and midstream operations. The design of the launcher and receiver depends on the pig and pipeline design conditions. Crude oil, wet gas, dry gas, and product lines are typically cleaned with pipeline pigs monthly or semi-annually.

These units were custom-designed per ASME CODE B31.3 and weighed 2,400 lb. They are 120″ in length and have 12″ dia. minor barrels and 18″ dia. major barrels. The barrels are fabricated from API 5L Gr. B pipe, the flanges from SA105, and the closures are manufactured from carbon steel. The launchers are designed for operating temperatures ranging from -20°F to 212°F at 943 psig. They were radiography-tested and hydro-tested on-site at our manufacturing facility at 1,415 psig for two hours.

PT&P REF. ORIGINAL POST 02212014

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Pig Launchers and Receivers Custom Designed for a Chemical Plant
September 27, 2022

 

Pig Launchers And Receivers Custom Designed For A Chemical Plant

Type: Pig Launchers & Receivers
Size: 4-14” Diameter | 72-98″ Long | 48″ Tall Stands
Material: 316 L SS | SA 106-B | SA-105
Design: Operating Temperature: 221°F
Operating Pressure of 117, up to 205 PSI

PT&P‘s Sweco Fab division custom designed and manufactured pig launchers and receivers for a chemical plant in Saudi Arabia. A pig launcher is a pressurized container used to shoot a cleaning device (called a "pig") through the pipeline to perform a variety of functions including cleaning, monitoring, and maintenance of the pipe. Pig launchers & Receivers are used in a variety of industries such as oil and gas, paint manufacturing, food processing, and in cross-country pipelines. The main advantages of pipeline pigs are inspection and cleaning which can be conducted without disrupting line contents, shutting down pipeline flow, and helping to prevent cross-contamination saving both money and time for plant operations as well as maintenance teams. These units are fabricated from stainless steel 316 L, SA 106-B, and SA -105. Dimensions for these pig launchers and receivers are 4", 6", 8", 10", and 14" in diameter and range from 72" to 98" long. They are mounted on 48" tall stands. They are designed for an operating temperature of 221°F with an operating pressure of 117, up to 205 PSI. You can also skip the line and order on Amazon any of our other Standard Expansion Joints and Pipe Support Components

PT&P REF. ORIGINAL POST 09252019

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Bulletproof Protection Shield (Critical Defense Product)
July 25, 2022

Bulletproof Protection Shield (Critical Defense Product)

  • Cost effective
  • Easy to move
  • Compact folding function for storing
  • Minimal set-up for convenient access
  • Includes bulletproof riot shields rack for placement/storage
  • No maintenance required

PT&P designed and fabricated a full coverage bulletproof shield for a company in Texas. This critical defense product is cost-effective, easy to move, compact to store, and convenient to access at a moment’s notice. Each unit includes slots in order to store four bulletproof riot shields. We hope the need never arises; however, this safety product is suited for public spaces such as schools, churches, concerts, public events, government agencies, and functions. The shield can function as a cover for a doorway providing safety to inhabitants while also allowing for mobility enabling persons the ability to exit safely from an unforeseen situation. The key design considerations this shield sought to address were safety of the defense personnel by providing for head to toe protection but also enabling mobility during one onto one incidents.
In addition to our deep technical expertise in the design and manufacturing of supports and expansion joints for piping systems, we have always been able to pivot to build what is the task in the moment by our customers and community. The bulletproof shield showcases our ability to be flexible, think outside of the box, and solve most problems.
Some of our key products, such as the big ton, are a product of this kind of exchange with our customers. We invite you to take a look at your project needs and our scale and capabilities and ask what we can do for you.

 

View video on this products’ function

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Screen Guides for a Cooling Tower at a Chemical Plant
March 21, 2022

These screen guides were custom fabricated for a cooling tower at a chemical plant in Texas. These anchor bars are used to secure the screen guides to the concrete. These screen guides are 10″ in width and are 42″ in length. All components were completely fabricated from A36 carbon steel with a galvanized finish. Standard quality control inspections were performed before shipment.

Ptp Screen Guides 144058

Many plants, such as power, petroleum refineries, metal processing, and other industrial facilities are designed to use open recirculating systems utilizing cooling towers for heat transfer from condensers and other heat exchangers through a process called “latent heat of vaporization.”

Industrial Process Cooling TowersWithin these cooling towers, screen guides are used in a gravity-flow distribution system where supply water flows or cascades down over successive offset levels of horizontal screens or splash bars into a basin. These guides provide a means by which screens or splash bars are supported from a concrete structure. The screens are intended to lower the temperature of water by causing the water to spread over large areas to promote maximum exposure to airflow as it cascades from the top of the tower into the lower basin. One side of the guide provides a “slot” by which screens or other types of “surfaces” can be installed. The other side of the guides are fitted with bent “strip anchor bars” similar to those used for embed plates. As a manufacturer of embed plates, we also supply these for mining facilities, semiconductor plants, wastewater treatment plants, or any construction site where there is steel attached to a concrete panel or slab.

PT&P REF. ORIGINAL POST 04102017

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Spectacle Blinds for Upstream Crude Reservoir Heavy Oil Development
January 26, 2022

Spectacle Blinds Fabricated For Upstream Crude Reservoir Heavy Oil Development Project In The Middle East (Kuwait)

Sweco Fab, Inc., a division of PT&P, fabricated a variety of spectacle blinds for a leading solutions provider. The spectacle blinds are fabricated from A516-70 carbon steel and coated with PTFE, 25% glass-filled material. The pipe sizes ranged from 2″ to 20″ diameter and all blinds were fabricated per ASME B16.48 code. The function of a spectacle blind is to allow a line to be in either full shut-off mode or full flow mode, depending on which side is being utilized.

Spectacle blinds can be made of various materials such as carbon steel (ASTM A105), stainless steel (ASTM A182 F304, F304L, F304H, F316, F316L), alloy steel (ASTM A182 F1, F11, F22,), duplex Stainless steel (UNS S31803, UNS S32750), nickel alloys (Monel 400 & 500, Inconel 600 & 625, Incoloy 800, 825, Hastelloy C22, C276), and copper alloys (copper, brass & gunmetal). PT&P has manufacturing capabilities to handle multiple materials in our facility and our engineering teams have deep experience in designing with them (View section on Metallurgy).

In this application, the line blinds and spacers are coated with Fluoropolymer Coatings which allow for lubrication and controlled friction, wear resistance, heat resistance, nonstick and release properties, and corrosion protection. The coating enables a smooth, hard, slick coating that provides excellent corrosion and chemical resistance. Other benefits of fluoropolymer coatings include reduced friction, resistance to galling, non-stick, non-wetting, electrical resistance, and abrasion resistance. Spectacle blinds are a lower-cost alternative to double block and bleed valves where OSHA requires positive isolation of piping segments for safety reasons. Spectacle blinds are installed in the inlet and outlet of static and rotary equipment, in bypass lines, at unit battery limit, and where double isolation is required for high-pressure lines.

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Cable Tray Support Rack Fabricated for a Groundwater Remediation
August 30, 2021

Cable Tray Support Rack Fabricated For A Groundwater Remediation

PT&P provided a cable tray support rack to a groundwater treatment facility in California. Groundwater remediation is a process whereby groundwater is purified by removing pollutants and containments rendering the water useful for crop irrigation and industrial processes. Groundwater remediation techniques can include but are not limited to, oxygen gas injection, dual-phase extraction, membrane separation, carbon absorption, and chemical oxidation. Cable trays, used in this facility, were designed to suspend electrical cables, wiring, and small-bore piping throughout the facility. Cable trays are also used in biochemical plants, solar power plants, sports stadiums, green energy plants, as well as, traditional plants such as petroleum refineries, chemical and coal-fired power plants. As a general rule, cable trays protect and carry cable and wiring from point “A” to “B” inside the facility.

This section of cable tray in the photograph (blue in color) is 25’ long, 7’ wide, and 11’ tall completely assembled. It is fabricated from carbon steel and painted with a highly chemically resistant epoxy mastic designed for immersion conditions to protect against corrosion in marine or industrial conditions. PT&P can fabricate any combination of instrument stands and structural supports from floor mounts, wall mounts to secondary supports, and more. In addition, we have the capabilities to do what few other structural fabricators can do including:

– Complete Engineering designs including FEA (Ansys) and Structural Engineering (STAAD)
– Load Testing
– Incorporation of Contact Corrosion Solutions including TPI (half-round thermoplastic) and FRP
– Incorporation of Vibration Control Solutions
– Ability to fabricate with a wide variety of metals including all grades of Stainless and Nickel Super Alloys

PT&P has worked on and is working on some of the largest water remediation projects in the US where we have supplied expansion joints, variables, fire protection insulated supports, and structural pipe supports. Our ASME shop is large, local to the United States, and includes heavy-duty equipment and specially trained personnel with over 45 years of experience making this division of PT&P ideal for large-scale projects such as this structural support as we can leverage our massive manufacturing scale and expertise.

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Pipe Rollers for an Environmental Remediation Project
June 7, 2021

Pipe Roller Assemblies For An Environmental Remediation Project

These pipe rollers were designed for pipelines in an environmental remediation project. These rollers can also be used in conjunction with piping on bridges, landfill gas equipment, including oil-water & moisture separators, SVE systems, candlestick flares, blower packages, drainage systems, and many other infrastructure projects. The rollers are fabricated from cast iron, with a carbon steel frame, rods, and nuts. The units are designed for 14″, 18″, and 24″ pipe sizes and 5,000 to 7,200 lb. operating load. The rollers are designed to include 1-1/2″ thick insulation, and the size is selected to include the pipe covering saddle for the insulation. Standard quality control tests were performed prior to shipment. Roller hangers are used for the suspension of pipe from a single rod where axial movement may occur because of expansion or contraction.

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Fabricated Duct Work Transition Pieces for Polyethylene Dust in a Chemical Plant
March 30, 2020

 


Fabricated Duct Work Transition Pieces For Polyethylene Dust In A Chemical Plant

Type: Duct Work Transition Pieces
Size: 10” NPS | 15″ Length | 13-1/2″ SQ Flange End
Material: Carbon Steel  | 3-Coat Paint System
Test: QC Inspections | 100% Dye-Penetrant Exam

Sweco Fab., a division of PT&P custom designed multiple duct work transition pieces for polyethylene dust at a chemical plant in Louisiana. The units are fabricated from carbon steel and include a 3- coat paint system on the outside, with a light grey finish. The dimensions are 15” length, 13-1/2” SQ flange end, and 10” NPS at the other end. Transition pieces are normally used to join duct work of dissimilar cross-sections and sizes. Media passing through the transition piece can be air, liquid, gasses, dust, dirt, chemicals, etc. Prior to shipment, each of the units underwent quality control inspections including 100% dye-penetrant examination.

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Custom Manifolds Designed for a Polyethylene Facility
October 29, 2019

 

Custom Manifolds With Globe And Gate Valves Designed For A Polyethylene Facility

Type: Custom Manifolds with Globe and Gate Valves
Size: 72” Height | 1″ x 1-1/2″ | 1″ x 2”
Material: SA-105 | SA-106B | SA-36
Testing: 100% Dimensional | Inspection Q.C. Inspection
NDE(RT,PT) Hardness | Hydro-test @ 430 PSIG

PT&P supplied 41 custom manifolds with globe and gate valves to a manufacturing complex in La Porte, Texas. The manifolds were installed in a hot water tracing supply and return system at a high-density polyethylene (HDPE) facility. Each manifold was welded to the exact specifications listed on the production drawing developed. The body was fabricated from 2” and 1” seamless XS pipe. The ports were FNPT and flange connection for field installation. All Manifolds were supplied with welded brackets and vertical support stands. The material used for the valves and flanges were SA-105, pipe SA -106B, and the supports are manufactured from SA-36. The overall height is 72″, and the dimensions are 1″ branches x 1-1/2″ run line and 1″ branches x 2″ run line. Inspection and Q.C. tests were performed by an internal and TPI team including 100 % dimensional inspection, NDE(RT,PT), hardness, and hydro-test at 430 PSIG.

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Bellmouth Reducers & Custom Pipe Spools Designed for an Ammonia Plant
August 26, 2019

 

Bellmouth Reducers &Amp; Custom Pipe Spools Designed For An Ammonia Plant

Type: Bellmouth Reducers, Ring Flanges, Pipe Spool Elbows
Size: 36” NPS | Opened to 48″ NPS
Material: Carbon Steel  | 304 Stainless Steel
Design: 150°F | 150 PSI Operating Pressure

PT&P designed and manufactured bellmouth reducers, ring flanges and custom pipe spool elbows for an Ammonia Plant in Texas. Bellmouth reducers are a single piece component used to transition a large outside diameter into a smaller outside diameter piping. These reducers are used in the cooling process; the shape allows for drawing in maximum amounts of air while preventing loss. The bellmouths are fabricated from carbon steel and 304 stainless steel. They are designed for operating temperatures of 150°F with an operating pressure of 150 PSI. Dimensions are 36” NPS opened to 48” bellmouth. Tests that were performed are spot x-ray, visual and dimensional, PMI-alloys and stainless steel.

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