What
is RPM?
Reality-based
Priority Management (RPM) is the latest
improvement in manufacturing information management that works with your
existing MRP/ERP system to:
- Provide unprecedented access
to the information you need to make decisions, execute the plan and
deliver on-time
- Uncover vital information
that's buried inside your system's files
- Help you anticipate delays
that could affect customer shipments
- Execute your plan despite
delays, disruptions or changes
- And the best news is RPM
doesn't replace or change your current system; it works with it to give
you the information you need. RPM extracts information about customer
orders, planned and released manufacturing orders and purchases, and
then presents it to you in a way that makes it easy for you to relate
each activity to your overall objective - having product ready to ship
when the customer wants it.
RPM builds a work file containing
all the aforementioned order information and documents all the relationships
between activities and customer demands. As a result, it becomes obvious
where everything is going and what activities lead to which products and
shipments. With this information in hand, plant management can readily
see which orders are more important, which expected receipts (at any level)
are most critical to meeting shipment objects, and which "expedite"
recommendations are simply to replenish stock - a worthy objective but
not one that should take precedence over activities that complete customer-bound
product.
MRP and ERP have proven themselves
over many years and tens of thousands of successful implementations. But
it's not always easy to find the information (although it undeniably exists
within MRP/ERP) that plant and purchasing management needs to avoid unpleasant
surprises and insure on-time completion of scheduled work.
RPM is the one enhancement
to MRP/ERP that unlocks the benefits - without modifying the existing
code or interfering with the normal operation of the system in any way.
Some history
Manufacturers today are under
constant pressure to reduce delivery lead-times. The pace of business
is accelerating and time has become the critical issue! For too many manufacturers
the result has been too much expediting and production disruption.
Materials management systems
utilizing MRP planning logic were supposed to be the tool to reduce lead-times,
eliminate expediting, and bring order to the chaos that ruled the factory
floor. For a time, it was surprisingly successful and was certainly a
great improvement over order point and other manual methods of managing
procurement and order launching. But these gains proved to be fleeting.
Before long, chaos and expediting once again ruled the factory floor.
So, what happened?
Let's look at an equipment
manufacturer that had a 12-week delivery lead-time, similar to their competitors,
who's on-time delivery performance was extremely high. In the early-mid
90s they embarked on an internal improvement process (JIT, cellular manufacturing,
vendor partnering) and reduced their delivery lead-time to 4 weeks. Significant
materials shortages resulted, which they initially blamed their planning
system, but what if it wasn't a planning problem?
First, planning systems use
a critical path approach that depends on feedback from both internal and
external suppliers to confirm due dates will be met. Second, information
systems are really just a mechanism to facilitate communication throughout
an enterprise. The system was designed around a departmental organizational
structure where, as tasks were completed, the system was updated and responsibility
was passed to another department. Planners could react to any "past
due" conditions and maintain the schedule by expediting because sufficient
slack time existed to allow catch-up.
This all worked very well when
lead-times were long, however, the communication mechanism began to breakdown
when lead-times shortened.
Suppliers had to react faster
but, they lacked the time needed to provide valid feedback.
This resulted in more "past due" conditions with insufficient
time left to catch-up.
Information wasn't crossing organizational boundaries quickly enough to
reflect current "real-time" priorities.
Reduced delivery times changed
the nature of the problem.
Recently, more emphasis has
been placed on customer order promising. While customer order promises
are certainly important, they don't answer the "real question"
management needs to know! Will all orders ship on time and, if not, why
not? The fact is a "single" priority order can potentially invalidate
some or all previous promises. The problem is further complicated by the
fact planning is item-based - it provides no visibility by complete customer
order.
Shortened lead-times, priority
orders and changes to orders result in the customer order "deck"
being frequently reshuffled and the ripple effect of even a minor change
can result in substantial lower level disruptions. The real challenge
facing materials management personnel isn't promising a single order at
some fixed point in the future but attempting to quickly understand what
the entire customer order deck looks like "now" so resources
can be correctly deployed to meet current commitments.
Users spend far too much time
digging information out of the system with far too little time left for
analysis. When change occurs there's the real possibility the plant is
working on the wrong things while the materials group is "working
the data" to realign dependent priorities. It's really a matter of
velocity! If the changes come at people faster than their ability to understand,
absorb and analyze the impact of those changes, there'll be more disruption
at the plant and purchasing levels. In short, the longer the realignment
period, the more delivery dates are jeopardized. This leaves users frustrated
- drowning in data but starved for information!
This is a new reality and new
tools are needed to respond to it. Planning is more important than ever
but planning by itself simply isn't sufficient to meet shortened delivery
lead-times. The real problem, as it's always been, is visibility of priorities
where there's competition for limited resources. The difference is time
itself is now one of those limited resources so we can no longer afford
to hesitate. We must react quickly and correctly.
One general manager recently
asked: "Does our ERP system tell us what we need to be doing now
in order to prevent problems in a few days?" MRP/ERP could and should
but, unfortunately, it doesn't. With OTTO RPM software, it can!
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