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.
A snubber is a shockabsorber, it stops all movement caused by a sudden transient (emergency) loadin a pipe system.A sway brace is ashock arrestor, it dampens the load and reduces the overall movement.A sway strut stopsall movement and transfers it into the pipe structure.
Large Sway Brace
The 114″ diameter, 3-piece pipe clamp is fabricated from A36 carbon steel and the pins are stainless steel. The sway strut is also fabricated from carbon steel and measures 24′-8″ long. This assembly can support loads up to 27,200 lb. and will be used in an oil refinery in Louisianna.
Piping struts,also referred to as sway struts, are devices used to restrain movement of piping in one direction while providing for movement due to thermal expansion or contraction in another direction.
Sway Struts with 3-Bolt Pipe Clamps
This sway strut is fabricated from carbon steel and measures 240″ from pin to pin. The pipe is 6″ in diameter and has a load capability of 15,000 lbs. The components were completed with a hot-dipped galvanize finish and the pipe was coated with a shop primer. The function of a sway strut is to restrain movement of piping in one direction while providing for movement due to thermal expansion or contraction in another direction.
This particular sway strut will support a 30″ process line in a refinery. This type of support is necessary, because the current line has only a few I-beams for support. Additionally, the I-beams that support the line are very high off the ground and not capable of handling the large forces acting on the line. Due to the loads acting upon the pipe and length of the required strut, a heavy schedule pipe and heavier duty strut ends were necessary.
Sweco Fab recently designed and manufactured two carbon steel sway struts with 2” adjustment capabilities for a cycle unit project. The sway strut is constructed of an 8” diameter pipe, 130 ¼” long, assembled with rod ends and brackets for an overall assembly length of 15’-0”. The 2” adjustment capability is accompanied by a load capacity up to 128 KIPS. Sway struts are used to restrain movement of piping in one direction while providing movement from thermal expansion or contraction in another direction.
Piping Technology & Products, Inc. recently designed and manufactured Sway Struts, PT&P Fig. 2110, with clamps for a construction company in Indiana.
The overall length of the support assemblies range from 24” to 60” and have loads ranging from 3,500 to 11,630 lbs. The strut assemblies are made of carbon steel and are used to restrain movement of piping in one direction while providing for movement due to thermal expansion or contraction in another direction.
The picture seen above is a mechanical snubber attached to a rod with a pipe clamp. Below the snubber is a rigid sway strut for 36” pipe and four smaller sway struts. The snubber will dampen sudden shocks and vibrations in the piping system. These show the variety of built by Piping Technology & Products, Inc. for a 250 megawatt power plant.