The people I talked to just aren't finding any problems in chips where the clock function isn't used, and they are finding very few problems with the systems that do use dates. Very soon now someone is going to say out loud that you don't really have to check every chip or system if a hundred others just like it have been checked and nothing has turned up. Electric people have a lot of experience dealing with outages. A former engineer for Pacificorp told me that when there are five generators in a plant, all are independent of each other so that one or more can be down at any time. If time is pressing and if your consultant budget is a little thin and your plant people tell you they have a work-around, you might just put checking those three units on the back burner.
Electric plants are like the railroads.
They are old technology. I have checked the RR switches on the main line near me and none of them have chips, just big bronze padlocks, probably the same ones they used when my father was a boy. I could, all by myself, switch a train on a manual or computer-controlled switch in 15 minutes with a sledge hammer. Peter de Jager used a similar example at the SPG conference in San Francisco. No, you run down to the computer store and buy 50 copies of Quicken and you set up your core functions again.