AN OVERVIEW OF REMAINING LIFE ASSESSMENT METHODS FOR HIGH TEMPERATURE COMPONENTS OPERATING IN THE POWER AND PETROCHEMICAL INDUSTRIES.

摘要

The capability to assess the secure remaining life of components operating in the creep range, thereby assuring integrity between inspection intervals, has become a major factor in the economic operation of power and petrochemical plant which has passed the original design life, frequently by a considerable margin. An overview is given of the nature of remaining life assessment and examples given of methods developed for headers, seam-welded pipe and fired heaters. The more common poblems associated with weldments are also reviewed.