RE-RATING PRESSURE VESSEL SETELAH PENINGKATAN TEMPERATUR DAN INTERNAL PRESSURE SERTA AKIBATNYA TERHADAP FATIGUE DAN REMAINING LIFE

Abstract

After the issuance of the latest regulation by BPOM, namely BPOM Regulation Number 20
of 2019 concerning Food Packaging, several industries have made changes to their production
processes. This made one of the well-known beverage companies make changes to the initial pressure
vessel design. It is necessary to increase the internal pressure and temperature so that the production
process complies with these regulations. In this case, the pressure vessel has been re-rated after the
changes of the initial design. Research is needed to determine the strength and remaining life through
stress and fatigue analysis. The remaining life calculation results show that after re-rating, the pressure
vessel has a remaining life value of 70 years. This value is 1 year lower than the remaining life before
re-rating, which is 71 years. The results of the stress analysis show that the highest stress is in the
stiffener of head, which is 11.530,54 psi, this value is still below the allowable stress value, which is
18.300 psi. The results of the fatigue analysis show that the value of the fatigue life cycle is infinite, so
that the pressure vessel can operate during its design lifetime, which is 20 years.