Target Mitigated Event Likelihood (TMEL) & ALARP (or ALARA)

There is a lot of discussion elsewhere on ALARP (and/or ALARA).  However, a company can add too many protection layers and invite shortcuts of one or more of the IPLs over the long-term, since staff are pretty sharp at figuring out when the "plumbing is over-tinked".  We advise folks to reach barely tolerable on each [...]