Evaluasi Tegangan Pada Sistem Perpipaan Untuk Fluida Hydrocarbon Liquid Dari Cold Flash Separator Menuju Pompa Sentrifugal

Abstract

A new pipeline system requires analysis to ensure its safety prior to operation. The assessment was conducted based on ASME B31.3 and company standards regarding allowable nozzle loads. The methodology involved both static and dynamic stress analysis using dedicated software, covering evaluations of pipe span, stress levels, nozzle loads, and natural frequency. The analysis results showed that the maximum allowable pipe span was 31.824 ft based on stress and 24.962 ft based on deflection. Stresses due to sustain, thermal expansion, and occasional loads remained within the allowable limits defined by ASME B31.3. However, the initial nozzle loads exceeded company standards, prompting a repositioning of supports to reduce the loads. After support optimization, all nozzle loads met the acceptable criteria. The maximum stress recorded in the system was 11,701.6 psi, still within the code limits. Furthermore, the natural frequency was found to be 6.393 Hz, exceeding the minimum requirement of 5 Hz to avoid resonance. These results indicate that the redesigned piping system is structurally sound and safe for operational use.