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This paper presents new types of mechanical devices, developed by SITON in cooperation with other units in Romania, by means of which to control, limit and damp shocks, vibrations and seismic movements in buildings, equipment and pipe networks. The new devices, called “SERB-devices”, can overtake static loads over which dynamic loads may overlap and be damped. The devices allow “cuttingoff” the dynamic action in-coming from the environment to the protected systems (building, equipment, pipe network, etc) and the overtaking of shocks and vibrations generated by the systems to protect the environment. The devices may have high relative displacements, with or without elastic reaction force, thus allowing the performance of a good isolation of the components against the dynamic action, also overtaking the displacements due to thermal expansions or support yielding. The devices are made of materials that practically are not affected by the aging phenomenon and relative large temperature variations and may be guaranteed throughout the service-life of each unit, without maintenance or repair. The devices are small in size if compared with the existing ones for similar performances. The radiation resistance capacity is very good and therefore allows their use in nuclear-power plants.

Mechanical devices to control, limit and attenuate shocks, vibrations and seismic movements in buildings, equipment and piping networks