Resources
PT&P designed these G-Type variable spring support assemblies for an LNG facility in Saudi Arabia. The variables are comprised of two standard spring housing joined together with an intermediate bridge assembly. They are designed for an upwards travel range of 0.078″ to 0.118″. The variables were fabricated from carbon steel with a hot-dipped galvanized finish. Standard load and travel testing was completed prior to shipment.
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| 108″ Dia. Storage Tank and Containment Tank | Heavy Duty Yoke U-Bolt Pipe Clamps | F-Type Spring Supports for LNG |
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| 12″ Tied Universal EJ | 46″ Dia. Inline P.B. EJ | 30″ Dia. Single Tied EJ | 84″ Dia. EJ for FCC Unit | 20″ Dia. Double Gimbal Expansion Joint |
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| 14′ Long Sway Struts | 54″ Hot Shoes | U-Type Constant Springs |
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| 90″ Dia. Duct Work for an Ammonia Plant | 11′ Long Fabric EJfor a Gas Turbine | 16″ Dia. Stainless Steel Single EJ’s |
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| F-Type Constant Spring Support Assemblies | SS Rollers for a Wastewater Treatment Plant | 24″ Hold-down Clamps w/ PTFE Slide Plates for a Natural Gas Plant |
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| 44″ Dia. Fabric EJ’s for a Chemical Plant | Tied Universal EJ for a Nitrogen Plant | 8″ Dia. Tied Universal Expansion Joints |
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| Roller Stands Designed for a 10″ Dia. Pipeline | Sway Struts Custom Designed for a Chemical Plant |
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| 136″ Universal EJ for a Thermal Power Plant | 10′ Long EJ for a Nuclear Energy Facility | Stainless Steel Universal EJ’s for a Pipeline |
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| Insulated Supports for an Ammonia Project | Pipe Hanger & Clamps for Flue-gas Desulfurization | 16″ Dia. Insulated Supports for High Temperatures |
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| 16″ Dia. Tied Universal Expansion Joints | 6″ Single Expansion Joints | 28″ Dia. Gimbal EJ with Floating Rings |
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| C-Type Variable Spring Hangers for a Power Plant | 48″ Dia. Cold Shoes for Light Hydrocarbon Production Facility | Compact Spring Supports for a Heat Exchanger |
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| 10″ Dia. EJ for HVAC Service | 75″ Long EJ for a Boiler Exhaust Application |
153″ Fabric EJ for a Gas Turbine Facility |
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| Variables for a Furnace Application in an Ammonia Plant | 36″ Dia. Cryogenic Pipe Saddles for LNG Service | 42″ Dia. Chrome-Moly Pipe Clamps |
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| 32″ Dia. Externally Pres. EJ | G-Type Variables | 20″ Dia. Inline Pressure Balanced EJ’s |
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| F-Type Variables for a Chemical Processing Plant | Constants for a Steam Methane Reformer | Pipe Clamp Assembly for Partial Oxidation Unit in Synthetic Gas Plant |
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| Gimbal EJ’s for a Flare Gas and Steam Application | Single EJ’s for a Hydrocarbon Vapor Pump |
PT&P designed these roller stands for a refinery in Mississippi. The rollers were designed for ease of assembly to support a 10″ diameter pipeline. They are comprised of cast iron roll and sockets, steel roll rod, continuous thread rods and hex nuts. These rollers are designed to support a maximum load of 2,100 lb. and to allow axial movement of the pipeline.
These compact spring supports were custom designed and built within 4 weeks to support a pump for a facility in Wyoming. The housing was fabricated from A-36 carbon steel and hot-dipped galvanized to protect them against corrosion. The disc springs are engineered using the stainless steel Belleville disc springs designed for large loads but small movements. In this case, the springs are designed to support a load of 11,137 lb. and movement of 0.018″ (upward). Each assembly underwent load testing prior to shipment.
The compact size and resistance to corrosion attributes of these compact spring supports make them ideal for placement under the discharge piping of a pump at this facility. By using these compact spring supports directly on the pump, excessive thermal loading on the pump’s discharge nozzle is resolved and brings it within the pump manufacturer’s allowable limit, so the pump will operate safely, as intended which also results in extended life and low maintenance.
PT&P custom-designed pipe clamps for an ammonia facility in Louisiana. The clamps are designed for a 42″ diameter pipe and are fabricated from Chrome Moly and painted for a high heat application. The clamps support up to a 6,295 lb. load in an operating temperature range from -50 to 1000°F.
Live Webinars are worth 1 PDH Credit for TX Professional Engineers
Learn how the theoretical applications of spring supports are put into use in the real world. We will start with a review of the working principles of both variable and constant springs. See how brand new spring looks at delivery, and review installation guidelines. Learn the key points to review through the total installation process and subsequently when the springs are in operation. See how to determine if springs need adjustments, re-calibration, refurbishment or replacement. View in field examples, shutdown and isolation procedures. See the selection process required when there are significant changes to the operating condition.
The featured presenter, Jerry Godina has over 16 years experience as a pipe support designer and manages PT&P’s engineer training development program. He also inspects existing supports, consults on site remediation projects and oversees installation on a regular basis.
PT&P designed 100-F type constant spring supports for an oil refinery in Alabama. These custom constant spring supports are 32” x 12” x 23.5” and designed to support an operating load of 650 lb. with 14” of total travel. The constants are fabricated from A36 carbon steel and the coil is from 5160H alloy material. Standard load and travel testing were completed to ensure the quality and performance of these constants.
Custom Variable Spring Supports Designed for a Furnace Application in an Ammonia Plant.
PT&P custom designed variable spring supports and hangers for a furnace application in an ammonia plant. The furnace springs are fabricated from carbon steel and painted with a red-oxide primer to help prevent corrosion. The spring supports are designed to support loads ranging from 400 lb. to 12,500 lb. Over 150 spring coils underwent calibration test prior to fabrication and insertion into the variable support housing to ensure variance of less than 5%.
24″ Diameter HD-2 Hold-down Clamps for a Natural Gas Plant in Colorado.
PT&P designed and manufactured these standard HD-2 hold-down clamps for a natural gas plant in Colorado. They are fabricated from carbon steel and designed with PTFE slide plates. The hold-downs are designed for 8″ to 24″ diameter pipes and operating temperature up to 400°F.
Compact Disc Spring Support Designed for a Heat Exchanger Application
In this application, the heat exchanger (vertical vessel), has thermal movement of 1/4″, vertically. As it expands thermally, the vessel lifts off its support structure and additional forces at the vessel’s lower nozzle are created. With many heat exchangers, as well as other process equipment, the space between the support structure and equipment is restricted. In this case, the space between the cantilever clamp attached to the vessel and the support structure is limited to only 5.1″. This lack of space is unsuitable for placing the conventional spring supports which require more space.
The Compact Disc Spring support is designed to support large loads in small confined spaces with limited thermal movement (from 0 to 3/4″). By supporting the vessel with Disc Springs, the thermal movement is allowed (or relieved), which helps reduce the excessive loads and local stress on the nozzles. This results in compliance with the ASME Piping and Vessel Codes. Due to a corrosive chemical plant environment, the two Compact Disc Spring supports were supplied with engineered 17-7PH Stainless Steel Belleville Disc Springs to combat corrosion.
PT&P custom designed pre-insulated pipe supports with polyurethane insulation for cryogenic temperatures in a light hydrocarbon production facility in Texas. A total of 59 cold shoes were fabricated from A36 carbon steel with a hot-dipped galvanized finish. The cold shoe assemblies range in diameter from 24″-48″ and were designed to support loads ranging from 17,000 to 31,000 lb. Standard Q.C. and dimensional tests were performed prior to shipment.
This presentation will cover Pre-Insulated Pipe Supports, including pipe insulation products for both cryogenic and heat applications. Learn about the different types of insulation materials and get the inside scoop on our cold shoe design. Explore how Polyurethane foam is produced, from mixing polyols and isocyanates to inspecting the final product. Learn about anchor shoe testing, lateral load testing, compressive strength testing, and axial load testing.
The featured presenter, David Baker has over 12 years experience with pre-insulated pipe supports, on-site surveys, inspections, Installation and Maintenance. He is also the manager of PT&P’s Field Service division and our in-house consultant for pre-insulated pipe supports.
PT&P designed C-Type variable spring support assemblies for a power plant in Louisiana. They are designed for operating loads ranging from 1,319 to 2,800 lb. with an upwards travel ranging from 0.11″ to 0.34″. The variables were fabricated from carbon steel with a hot-dipped galvanized finish and standard load and travel testing was completed prior to shipment
PT&P custom designed pipe clamp assemblies for a partial oxidation unit in a synthetic gas plant located in Texas. The pipe clamps were fabricated from alloy A387 and coated with a special paint for high temperatures. The assemblies were designed with supportive structures for pipe sizes ranging from 2″ to 16″. Standard quality control inspection and tests were conducted prior to shipment.
This presentation will cover Pipe Clamps, including Hold-Down Clamps, Riser Clamps, Clevis Hangers, Yoke U-Bolt Clamps and Structural Supports. Learn how the appropriate type of pipe support is chosen based on the different design conditions. Find out how Finite Element Analysis is used in the design process and view the custom pipe supports designed for extreme applications.
PT&P custom designed sway struts for a chemical plant located in Texas. The sway struts and rod hangers are both fabricated from carbon steel. The overall length of the support assemblies’ range from 31″ to 83″ and are capable of supporting loads up to 1,750 lb., with an operating temperature of 1100°F and 1 1/2″ of vertical movement. The sway struts are designed to restrain movement in one direction while providing movement due to thermal expansion or contraction in another direction.
PT&P custom designed pipe hanger and clamp assemblies for a flue-gas desulfurization application in an energy facility located in Kansas. The assemblies are designed for pipes ranging in size from 2-1/2″ to 6″ in diameter, and are capable of a 650 lb. operating load. Materials include tube steel, fig. 92 washer, fig. 122 all threaded rod, fig. 30 turnbuckle, fig. 40 weldless eyenut and fig. 70 pipe clamp.
PT&P designed spring loaded stainless steel roller stands for a wastewater treatment plant. The rollers were custom designed for ease of assembly to support a 30″ diameter pipeline. They include eight springs in two spring housings and are designed for 1,000 lb. load. The base plate is 18-3/4″ x 13″ and the BOP is 10-3/16″. Roller stands are used to support pipelines that expand and contract longitudinally in the axial direction and where vertical adjustment is not necessary.
PT&P manufactured F-type variable spring supports for a chemical processing plant in Texas. The variables are designed with an internal guide and for a movement of 0.09″. They are designed for a 5,350 lb. cold load and 5,450 lb. hot load. Because these springs had to be capable of withstanding a hydro-test in excess of 33,000 lb. (which substantially exceeded the standard maximum hydro-test of 18,000 lb.), special collars were used in conjunction with the standard travel stops. These collars are designed to absorb the large hydro load by relying on the high strength characteristics of the load flange and housing components of the assembly while essentially bypassing the threaded internal components.
