Analisis Creep pada Bejana Penukar Panas Berdasarkan API 579

• Main Author: Firman Richtiansyah Z, R
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/41862
• Institution: Institut Teknologi Bandung

The integrity of a component in the industry has effects in several aspects. One of them is the economic aspect that makes the process industry always try to keep the components operate according to the specified time. In the carbon black production industry, one of the components used is shell and tube heat exchanger that operates in high pressure and high temperature conditions. Material that is exposed to high temperatures and receives a load in a long time will be exposed to creep damage and the longer it exposed the component will rupture. Failure of vessels in operation can stop the process of producing carbon black and also cause financial losses. Considering the importance of the vessel in this production process, further assessment is needed to predict the remaining life of the components exposed to creep. Creep analysis was performed based on API 579-Fitness for Service using levels 1, 2 and 3. This was done by calculating the remaining life of the component based on 14-year operating history data that determined creep damage. Creep damage over components is affected by pressure and temperature during operation. Changes in operating conditions make the growth of creep damage on the components change. Based on the analysis, it was found that the biggest creep damage on the component was 1.95 which exceeded the permitted creep damage which was 1.00. Components that do not meet the assessment criteria need to be rerated. Rerate is done by reducing the temperature and/or operating pressure on the component so that it can reach or exceed the component's design life.