I use the
term RCPE because it is a waste of good initiatives and time to only find the
root cause of a problem but not fix it. I like to use the word problem; a more
common terminology is root cause failure analysis (RCFA), instead of failure
because the word “failure” often leads to a focus on equipment and maintenance.
The word “problem” includes all operational, quality, speed, high costs and
other losses. To eliminate problems, is a joint responsibility between
operations, maintenance and engineering.
Preventive maintenance and planning and scheduling might be
two or three different reliability and maintenance processes, but one can not be
effective without the other, so here I bundle these processes into
one.
The
proponents of RCFA often argue that it will solve most problems. Thus, this
activity always must come first. I am an advocate for both RCPE and preventive
maintenance and planning and scheduling, so I see myself as objective when
answering this question.
My
viewpoint is that one activity does not exclude the other, but if you do not do
your PM and planning and scheduling well, the results of a majority of RCPE work
will show the fact that the root cause of many problems is the lack of PM and
planning and scheduling. You can always do RCPE on select repetitive and costly
problems, but if you want to become as good as you can be in this area, you need
to free up time so that your front-line leadership, operators and maintainers
acquire necessary skills and have time to solve problems as part of their daily
work.
I believe
that up to 30 percent of all maintenance hours should be devoted to RCPE. This
will be possible if the basic operations and maintenance processes, including PM
and planning and scheduling, are executed very well.
To
gradually be able to move more effort hours to RCPE is the next step in very
good manufacturing organizations. Clearly communicating this as a strategy will
remove the threat of becoming more efficient and the perceived negative
consequences this can have for a maintenance crew. You will change from a
“doing” organization, to a “thinking and doing” organization.
In
summary, you need to start with improving PM and planning and scheduling and
gradually move more efforts into RCPE at the same time you do RCPE on major
problems.
To decide
which problems will be the subject of RCPE, you need to set up some triggers to
initiate this activity. In a paper mill maintenance organization, the following
triggers are often used:
When any
of these triggers occur, a problem owner is assigned and a first RCPE report is
due within 96 hours.
Recently,
I had a follow-up meeting with three different paper mills that had followed
this advice. Two of the mills mentioned that to be able to solve any problems at
all, they had to raise the trigger from a level of three hours of equivalent
production loss in prime tons to the equivalent of eight hours prime tons
production loss.
It is
important to be realistic and start on the right trigger level and then lower
this level gradually as you become better in executing your PM and planning and
scheduling.
Torbjörn (Tor) Idhammar is partner and vice president of reliability and
maintenance management consultants for IDCON Inc. His primary responsibilities
include training and implementation support for preventive maintenance/essential
care and condition monitoring, planning and scheduling, spare parts management,
and root cause problem elimination. He is the author of “Condition Monitoring
Standards” (volumes 1 through 3). He earned a BS in industrial engineering from
North Carolina State University and an MS in mechanical engineering from Lund
University (Sweden). Contact Tor at 800-849-2041 or e-mail info@idcon.com. |