Point is,why would you want blockchain or specifically bitcoins to influence the mechanics in the chemical power plant ? Understand,those are two different things ,economy and the specified model. You've put it in a very vague way.Use a better real life implication in order to make your point clear.
very good question. What are the "pains" of the plant?
difficult to answer, because many things are considered today to be "normal". And maybe after utilizing of blockchain will be not normal any more.
In general it works like this:
Data will be collected and analyzed by control system. all the logic is inside of it.
Normally there is a huge database which contains all the historical measured parameters, e.g. measured every 5 seconds. Some plants use neuronal networks to predicts some situations and partially control the operation.
Parallel to the normal control system there is a safety system which must prevent accidents by detecting dangerous situations and acting if necessary. It uses totally independent sensors and actors.