Principles are more important than strategies

摘要

A number of US oil refineries have recently asked the question, "When should an equipment repair be classified as rework?" At one major facility, if a pump or motor is taken to the shop for repairs and the asset is thereafter returned to service, a 45-day observation period commences. By that facility s definition, a "good repair" is proven if, after recommissioning, an asset runs for at least 45 days without mechanical problems. If issues develop on Day 1 through Day 44, then the equipment is taken back to the shop, and the second repair is classified as rework.