Remaining Life Assessment (RLA) is an attempt to measure and predict the residual life of equipment for replacement or repair planning. In RLA multiple nondestructive and metallurgical tests such as in situ-replica are done for obtaining accurate measurement of thickness and dimensions, and for finding any anomalies according to the expected damage mechanisms.
The shutdown frequency is determined based on various factors. One of the most important factors is the current age of the plan. Critical tasks require the highest priority. However, for many oil and gas operators/end users, the frequency of major turnarounds is generally 3 - 4 years or less. Extending intervals between shutdowns is the real challenge. This has been further heightened by the disappointing slide in oil prices and the pandemic, which has led to a reduction in resources in the past months.