Custom All Stainless Steel Variable Spring Supports for a Floating LNG Platform in Singapore

May 30, 2023

Custom All Stainless Steel Variable Spring Supports For A Floating Lng Platform In Singapore

Type: Variable Spring Supports
Material: Alloy 2205 Duplex/SAE 5160H
Design: Operating Load up to 3,597 lbs./Operating Temperatures of -15-200°F
Testing: Standard Load & Travel Tests

PT&P manufactured these custom variable spring supports for a floating LNG platform in Singapore. The spring housings are fabricated with alloy 2205 duplex, and the coil is manufactured from – SAE 5160H to help prevent corrosion due to sea salt. The variables installed heights range from 10-3/4″ to 12-1/16″ and are designed for an operating load of up to 3,597 lbs. Also, load tests were performed at operating temperatures of -15°F, along with liquid penetrant testing of the welds. These variable springs are also designed to suit a highly corrosive environment such as sea salt. They can operate in temperatures ranging from -14 to 200°F without compromising their load-carrying capacity. We offer a full range of pipe supports and expansion joints for offshore applications, including floating platforms for cryogenic systems for offshore LNG transfer, both for ship-to-ship and ship-to-shore. Our team of engineers and field service technicians have assisted in offshore diving examinations to both inspect and recommend solutions to help solve emergency needs.

As the floating LNG market continues to grow at a rate of almost 5% year over year, it is evident the increased demand for clean energy is the driving factor. Piping Technology and Products and its subsidiaries are well-positioned to support the global pivot to renewable and clean energy needs. In the last year alone, we designed and delivered products and services in most associated sectors, including solar, wind, water, geothermal, bioenergy, nuclear, hydrogen & fuel cell sectors worldwide.


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Over 4,000 Cryogenic Pre-Insulated Pipe Supports Designed for LNG Service

May 23, 2023

Over 4,000 Cryogenic Pre-Insulated Pipe Supports Designed For Lng Service

Type: Pre-Insulated Pipe Shoe & Clamp Assemblies
Material: 304 L Stainless Steel | Protective Coating | Micarta® Insulation
Design: 20″ L x 36″ W x 75″ H | 56″ Dia. Pipeline | -459°F
Testing: Load & Pull Tests

PT&P designed over 4,000 supports for LNG service in Texas. These pre-insulated pipe shoe and clamp assemblies were custom designed for cryogenic temperatures with special low-temperature grade NP500CR Micarta® insulation. This type of Micarta® consists of a glass fabric with a specially formulated epoxy resin. It has excellent physical properties at operating temperatures down to -459°F. It has very low thermal conductivity and has been produced specifically for use in cryogenic applications. The shoes pictured are fabricated from 304 L stainless steel, A193 GR. B8 bolting, with a protective coating and designed for a 56″ diameter pipeline. The shoes measure 20″ long, 36″ wide(base), and 75″ high. This project included supports varied in pipe sizes from ¾” to 56″ in diameter. Load tests were performed prior to shipping this rush order.

As a leader in the supply of pipe supports for LNG facilities, we’ve passed on to our client’s design expertise, innovations, and deliverables for over 30 years. For this project, we supplied over 90,000 pipe supports over a three-year period, including:

  • On-site field assistance to identify the material, address material shortages, and inspection
  • Constant spring supports
  • Fabricated pipe shoes, guides, and anchors
  • Insulated shoes and supports
  • Structural supports
  • Slide plates
  • Sway braces and struts
  • Variable Spring supports
  • Wear Pads

In recent years, the use of various new and improved insulating materials have helped to produce a better product, made installation easier, lowered maintenance costs, and extended the life of the support. We offer testing at our manufacturing facility in Houston utilizing thermal scanning (infrared technology) to measure temperature at various locations around the support. Often, we build the test structures that are then employed to analyze different products for improvement based on client needs and product optimization in manufacturing and design. The results often lead to design improvements that improve the efficiency of the piping system and reduction in the cost of installation in the field. We offer 24×7 web-based emergency services, providing field service and quick turn-around time when you need it most.


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Hydraulic Snubber Assemblies Designed for a Geothermal Power Plant

May 16, 2023

Hydraulic Snubber Assemblies Designed For A Geothermal Power Plant

Fronek Anchor/Darling, a division of PT&P, designed and manufactured hydraulic snubbers for Geothermal power plants. Historically, these plants are located near tectonic plate boundaries in the Earth’s crust, where thermal activity is easily tapped. This heat energy is transferred into electrical energy through the use of turbines, generators, and heat exchangers. These snubbers are fabricated from stainless steel and include a special paint system suitable for a Hydrogen Sulfide (H2S) environment. All of the snubbers for this application were a 2-1/2 bore size, capable of operating at loads up to 10,000 lb., and were provided with either 6″ or 12″ of available stroke. The Pin-to-Pin dimensions ranged from approximately 36″ to 54″. Each snubber was tested at its rated capacity to ensure acceptable dynamic performance once it was installed in the field.

A hydraulic snubber is used to protect piping from unexpected events, such as water hammers or seismic activity prevalent in geothermal applications, while allowing the piping to move freely during normal operation conditions – a typical movement driven by thermal growth. We have seen hydraulic snubbers used in a large number of different applications, typically during the design phase of a project when the Piping Engineer is designing for a line that may have transient events but must also accommodate thermal growth. A hydraulic snubber works by passing hydraulic fluid between 2 chambers via a poppet valve. When the speed of the fluid passes a threshold, the poppet valve closes and causes the Hydraulic snubber to become rigid support. There is a small relief passage between the two chambers that will eventually allow the Hydraulic snubber to “reset.”

These snubbers were designed and manufactured for one of the world’s leading developers, operators, and manufacturers of geothermal renewable energy. We have long-standing relationships with our clients as a result of our long history and extensive portfolio of products and services. In this case, we supported this client’s initiatives for over 20 years worldwide with their projects in Nevada, California, Oregon, Israel, Hawaii, and Guatemala. In addition to hydraulic snubbers, we provided constant assemblies, pipe shoes, guides, anchors, pipe hanger hardware, slide-bearing plates, and variable spring supports.


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Bronzphite® Slide Plate Assemblies for a Power Plant

May 2, 2023

Structural And Bronzphite® Slide Plate Assembly For An Exhaust Duct At A Fossil-Fired Power Plant

Type: Structural Support with Slide Plates
Size: 1/2” x 5/18”
Material: Carbon Steel | Hot-dipped Galvanized | Bronzphite®
Design: 2,000 lb. Load | 730°F Temperature | 3,500 lb. Hydro-test

Piping Technology & Products, Inc. custom designed this structural support with Bronzphite® slide plates for an exhaust duct application at a fossil fuel-fired power plant in Louisiana. The Bronzphite measures 1/2” x 5″ x18” and was attached to a stand manufactured in carbon steel with a galvanized finish. The assembly is designed for an operating temperature of 730°F and an operating load of up to 2,000 lb. Also, designed with a hydro-test load of 3,500 lb. Standard visual and dimensional tests were performed prior to shipment.

Bronzphite® slide plates are commonly installed underneath the saddles of large stainless and carbon steel pressure vessels and tanks used in mining, refineries, and storage tanks storing a number of gasses such as chlorine, petroleum, and ammonia. Bronziphite plates used in these applications help to facilitate the growth of the tank due to pressure and temperature changes by lowering the friction between the supporting structural steel and the saddle of the vessel. Our Sweco division is ASME certified and can assist in the design and manufacture of small vessels and have experienced engineers utilizing materials such as Hastelloy, stainless, and carbon steel.


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