Suppose that a three stage process in a nuclear reactor had reliability ratings of .98 at each station and that only one stage needed to be successful for the process to work. If the plant wants to establish 6-sigma standards, what % reliable redundant controls need to be added to each station.

6-Sigma Standards

A set of techniques and tools for process improvement aimed at reducing the probability of defects and variability in manufacturing and business processes.

Nuclear Reactor

A device used to initiate and control a sustained nuclear chain reaction, primarily for the generation of electricity or for research purposes.

Redundant Controls

Systems or mechanisms put in place to act as backup or fail-safes in order to ensure continuous operation and enhance safety.