PT&P custom designed and fabricated 67 mini sway strut assemblies for a liquid natural gas plant in Australia. The sway struts are fabricated from galvanized carbon steel with 304 stainless steel pins. They are 14-7/16” long and capable of a 62,200 lb. load with an operating temperature of 650°F. The sway struts are fabricated to restrain either tensile or compressive force in one direction while providing for movement due to thermal expansion or contraction in another direction.
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.
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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.
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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.
Read MoreLive 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.
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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.
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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%.
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