G - Physics – 01 – N
Patent
G - Physics
01
N
267/55, 73/77
G01N 3/00 (2006.01) G01M 99/00 (2011.01)
Patent
CA 1152773
METHOD AND APPARATUS FOR TESTING SNUBBERS INN SITU Harry E. Sulzer Telford, Pennsylvania ABSTRACT OF THE DISCLOSURE A method and apparatus for testing seismic shock ab- sorbing snubbers in situ. Such snubbers are used in power plants in association with piping that is yieldably attached by way of pipe hangers or supports to the plant building structure. Typically, snubbers are operatively connected between the pipe and the building or other support structure. Such snubbers per- mit free motion of the pipe in response to slow thermal expan- sion or contraction of the pipe, but resist or damp rapid motion of the pipe induced by seismic shock or vibration. In a method aspect of the invention, the snubber system permits testing in situ by loosening, but not disconnecting, a connection between the snubber and the pipe (or, alternatively, between the snubber and the support structure) to permit limited motion between two relatively movable sections of the snubber, without inducing movement of the adjacent pipe; then applying a test force be- tween the relatively movable sections of the snubber to cause relative movement therebetween to determine the operation of the snubber.
362437
Anchor/darling Industries Inc.
Borden Ladner Gervais Llp
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