The ABC’s of Failure – Getting Rid of the Noise in Your System: "For the past 40 years, I have observed many companies; including DuPont (where I spent 27 years) pursuing planned maintenance with the standard tools of planned maintenance: inspections, planning, scheduling, materials procurement, CMMS systems, etc. with the same results. They succeed for a while and get their percent planned and scheduled maintenance up to the 80+ only to see that drop back later to 60 I am amazed how many of the companies we work with have had this experience," writes Winston P. Ledet
"This pattern of behavior has led us to conclude that the reason for this experience is that only 60% of the normal work of maintenance is inherently plannable. The rest of the work is created by random acts of what we are now calling carelessness. The sites where we see people break this pattern and achieve 92% to 96% planned maintenance for the long term without regressing, are the ones who eliminate the inherently unplannable work. Of course, this cannot be done by maintenance alone. Everyone who does work at a site contributes to the defects that create the unplannable work, and therefore everyone must participate in eliminating the defects that create the 40% of the work that is unplannable."
Helge: RCM and CMMS. More about that later. I needed this link.