For a metallic piping when piping class dictates post welding heat treatment (PWHT).Generally these piping lines are the following. The device becomes rigid, absorbs the dynamic energy, and transfers it to the supporting structure.įor piping where it is not advisable to execute erection welds at site, clamped shoes should be adopted. When an impulse event occurs, the snubber becomes activated and acts as a restraint device. During normal operating conditions, the snubber allows for movement in tension and compression. Travel range required to allow the free thermal expansion.Ī mechanical snubber is a mechanical device designed to protect components from excess shock or sway caused by seismic disturbances or other transient forces.Necessary details must be prepared for their procurement in time. Stress analysis may dictate need of hydraulic shock absorbers / Snubbers. Detail drawings may have to be prepared and provided to mechanical department. ![]() Sometimes equipment also needs to slide on low friction support plates due to stress analysis requirements. They are used below Rest Supports like Trunions, Shoes as well as Springs. These are used where supports with low coefficient of friction (0.1) are required by stress analysis calculations.
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