Constant Supports are used to support pipework or equipment with an essentially constant supporting effort during what may be large vertical movement. Where the change in supporting effort which occurs when using variable effort supports is unacceptable, or where the amount of travel provided by variable supports is insufficient, constant supports should be specified. High-temperature steam lines in power stations and flow lines on oil production platforms are examples of situations where large relative movement between piping and the supporting structure make the use of Constant Effort Supports essential. Constant Supports can also be custom-made to client's specifications and hot dip galvanized to withstand the GCC climate.
Variable Supports are used to support the weight of pipework or equipment whilst allowing a degree of movement relative to the supporting structure. Where pipes transport hot (or cold) liquids or gases they expand (or contract) due to the difference between operating and ambient temperatures. It is necessary to support the pipe in operating and ambient conditions, whilst permitting movement between the two. Variable Supports can also be custom-made to client's specifications and hot dip galvanized to withstand the GCC climate.
In pipework systems that are subject to dynamic loading, it may be necessary to use Rigid Struts and Snubbers. Dynamic loading may occur for a number of reasons. Unsteady flow, such as that caused by sudden valve closure, produces dynamic forces and is referred to as water hammer. In an earthquake, a piping system is also subject to dynamic forces. Rigid Struts act in both directions, rather than hanger rods, which only support downward acting loads. Rigid Struts are also used to provide lateral restraint where this is required. Snubbers are used where sudden dynamic restraint is required, but the pipe has to be allowed to gradually move thermally.
Pipe clamps, clamp bases, weld -on lugs, and U-bolts are essential as pipe connection components and are highly stressed in high temperature piping systems and therefore must be of high quality. These components and the loads cover the highest level of the practical field of application. Clamps can be designed for operation in temperatures up to 650oC.
Pipe bearings and saddle components are ideal as supports for piping systems arranged horizontally over long stretches. To allow normal thermal movement, the support points are designed as either sliding or roller types. Cryogenic pipe supports are used in cold temperature applications. These supports are made of High-Density Polyurethane Foam (HD PUF). Anchors and stops can be supplied with fitted spools, ready for installation on site.
Connecting Elements are the hardware that complement spring supports and allow the connection of the pipe to the building structure. These includes Threaded connecting elements like clevises, turnbuckles, eye nuts, rod couplers, and hanger rods. All components are drop forged, and designed (apart from turnbuckles) to allow slight length adjustments, despite their limited installation height.
The attachment of pipe supports to the load-bearing structure is achieved by special components that are welded or clamped. The safety of the connections depends on their particular suitability in each case.
KEKSA offers wide range of engineering solutions to our customers. We are also capable of designing and delivering customized pipe supports as per project requirements. We are equipped to meet the special surface protection requirements of projects.
To avoid costly damage and operational breakdown, the regular inspection of thermal movement in piping systems and the condition of supports - especially in older installations - is widely encouraged. Our engineers will produce comprehensive reports and provide the appropriate recommendations for a solution.
Most mistakes in piping supports are made during installation and commissioning.
Our engineers will supervise installation of piping systems into the supports prepared, inspect the system for correct installation according to drawings, deblock and commission the supports, conduct load and travel checks after commissioning, and inspect for freedom of movement of the pipe system in all three planes.
Our engineers will conduct maintenance based on inspection findings, as well as preventive maintenance (PM). To ensure the mechanical integrity and functionality of spring supports, it is recommended to conduct PM on all pipe supports at every planned shutdown. Our engineers will also calibrate spring supports at our testing facility.