Application of load coefficient method to establish seismic static acceleration at tubing take off connections

Abstract

The load Coefficient Method (LCM), described in ASME Code Case N-468, is currently being applied to the seismic analysis of piping systems, which are supported from civil structures. This paper presents an application of the LCM to the analysis of tubing systems which take off, and hence, are essentially supported from piping systems. The value of static acceleration so established is much lower than the value which would be obtained using the static method given in the Canadian Standard N289.3 and US-NRC Standard Review Plan 3.7.2-6. This approach also allows the tubing analysis to proceed without having to wait for completion of piping analysis, thus reducing design manhours and cost.

Publication Title

American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

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