ANALISA TEGANGAN DAN FATIGUE PIPA VENTING CONTROL VALVE LINE 6-MPS-3A-004 JALUR STEAM HEADER GAS COGENERATION PLANT

Abstract

Abstract - PT.Pembangunan Perumahan (PP) as the main contractor plans to conduct rerouting 6-inch venting valve control valve which is connected to steam header pipe in gresik gas cogeneration plant. General Arrangement and pipe routing of the initial design will be changed due to brazing piperack and cable tray lines. The operating conditions on the pipe have a design temperature of 420 ^oC and a design pressure of 53 bar. In this final project will be discussed about stress and fatigue analysis using CAESAR II software which aims to obtain the condition of secure piping system when operated. In this path there needs to be an observation on pipe to reduce the risk of failure of the pipe due to the thermal load. In the results of calculation obtained the value of stress . Highest stress value due to the hydrotest load of 5587.6 psi. Highest stress value due to sustained load of 5225psi.. Highest stress value due to occasional load of 5227.3 psi. Highest stress value due to expansion load of 40446,7psi. Highest stress value due to operation load of 39912.8 psi.