Remaining Useful Life (RUL) is a term used in maintenance operations and management to describe the estimated amount of time a piece of equipment or machinery can continue to be used before it needs to be replaced or repaired. RUL is calculated by taking into account the age of the equipment, its current condition, and the expected rate of deterioration. It is an important factor in determining when maintenance should be performed and when it is time to replace the equipment. RUL is also known as remaining service life, remaining life, and remaining life expectancy.
