Replace or repair?

摘要

The decision to repair or to replace is not an easy one. Several factors need to be weighed carefully, especially cost and the availability of valves or spare parts. There are also external factors that need to be taken into consideration, such as material and process development. The decision to repair or replace valves in piping systems involves several variables such as economic conditions, material advances, processing (casting, forging, machining, repair techniques, welding, NDE, PWHT, etc.) improvements, the plant management's perspective on repair vs. replace, MRO product availability, valve design improvements and, of course, the cost to repair versus the cost to replace.