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Custom Designed Elevated Hold-Down Clamp Assembly Fabricated for a 54" Suction Line in a Gas Plant
February 28, 2011
Drawing Of Complete Assembly (Including Hold-Down Clamp, Pedestals And Beams)
Drawing of Complete Assembly (including hold-down clamp, pedestals and beams)
Pedestals And Beams In Operation
Pedestals and Beams in Operation

The 54″ suction line carrying gas to a gas compressor at a rate of 1.7 million lb./hr. developed a severe vibration. The deflections in the line were up to 3/4″ and it was fully observable during operation.

Hold-Down Clamp In Operation
Hold-down Clamp in Operation

PT&P designed and manufactured a special elevated hold-down clamp, including a unique laminated vibration dampening lining. The entire pipe hanger assembly stands 22′ high and is coated with a carboline zinc finish. After installation and resumption of operations, the vibrations are now almost imperceptible.

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Large Custom "Sling" Support and Horizontal Traveler Assemblies for an Oil Refinery
February 21, 2011

Large Custom &Quot;Sling&Quot; Support And Horizontal Traveler Assemblies For An Oil Refinery

Three custom “sling” support assemblies fabricated from stainless steel were designed for an oil refinery in Louisiana. The assemblies are comprised of a 79.25″ diameter custom saddle support and two horizontal travelers (Fig.270 PTP-4). They are capable of loads up to 44,000 lb., and were designed, fabricated and shipped in four weeks for expedited delivery.

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Hydraulic Snubbers (Fig. 511 AD) with Protective Boots Designed for a Hydro-sulfuric Acid Environment in a Geothermal Power Plant
February 14, 2011

Hydraulic Snubbers (Fig. 511 Ad) With Protective Boots Designed For A Hydro-Sulfuric Acid Environment In A Geothermal Power Plant Hydraulic Snubbers (Fig. 511 Ad) With Protective Boots Designed For A Hydro-Sulfuric Acid Environment In A Geothermal Power Plant

Fronek Anchor/Darling, a division of PT&P, designed and manufactured hydraulic snubbers with protective boots for a hydro-sulfuric acid environment in a geothermal power plant. They measure 53-5/8″ pin-to-pin with a 3-1/4″ cylinder bore size and 6″ stroke.

The snubbers are designed for an actual load of 15,400 lb., but have a rated load capacity of 20,000 lb. They are fabricated from carbon and alloy steel, and include two coats of epoxy-based paint. An activation velocity test was performed, along with a release rate and drag characteristics test.

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