Joe,
The thing to remember when reading articles from Scope or any other IPEM dcuments is that they are written by Scientists. These guys have the time and freedom to postulate and have a tendancy to overthink situations. As engineers we make decisions based on real life experiences and over the last twnty odd years of safety testing I have never had a situation where we've been able to predict the failure of an e.s.t. by checking the previous records. The only useful requirement for storing e.s.t. results is for legal purposes, i.e. to prove that it has been done.
So, consider this punk! Are you a Scientist or are you an Engineer? Go ahead, make my day.
