
Intelligent Manufacturing October 1995 Vol. 1
No. 10
How to Find Hidden Cash Reserves
Manufacturers today must be fast and nimble enough to react quickly
to changes in customer demand and do it with little inventory. Gone
are the days when manufacturers could stockpile large quantities of
raw materials, load up the shop floor with work-in-process and pack
warehouses with finished goods. The old ways caused erratic and long
lead times, high costs, and required too much inventory.
In a recent survey undertaken by consulting firm R. Michael Donovan
& Co. Inc. (Natick, Mass.), 82% of senior executives who
responded said that inventory reduction was a major concern for them.
"Inventories can absorb massive amounts of cash," explained Mike
Donovan," president of the firm. "The fact is most manufacturers
carry too much inventory. The vast amounts of money tied up in
inventory could be better spent elsewhere, such as new product
development, acquisitions, modernization, reengineering, expansion
and debt reduction. In many cases, inventory is so bloated that a
high percentage of it will become obsolete before it's sold. Worse,
too much inventory is merely a symptom of more serious and costly
business process and system problems that afflict many
companies."
Some of these problems include poor forecasting, inadequate
production scheduling, low quality, bottlenecks, long cycle times,
high costs and wrong performance metrics. "For instance, poor sales
forecasts are often used to schedule production, sometimes for months
in advance," Donovan said. "When actual customer demand is not what
was forecast, inventory quickly accumulates in expensive piles and
customer service goes down. Then the cycle just keeps repeating
itself, further compounding the cash flow and service problems that
already exist."
Most experts agree that top-heavy inventories are a giant cash vacuum
and need to be turned off to free up cash for investment in revenue
growth activities. So how can this be accomplished? According to
Donovan, one of the major impediments to inventory reduction is the
mistaken notion that improved inventory management is all that is
required to get the job done. The real culprits are the inefficient
business processes that cause excessive inventories to exist in the
first place. He offers eight suggestions on how to reduce inventory
and tap the hidden cash reserve:
- Don't Blame Inventory Control. Certainly some
aspects of inventory investment are the result of inventory
control, but often their behavior is caused by management's
certain negative reaction to material shortages versus periodic
and less severe response to excesses. For the most part, inventory
excesses can only be eliminated when the cross-functional business
processes that cause the need for inventory buffers (excess) are
fixed. It's futile to think inventories can be isolated and
subsequently managed. Inventories are invariably the result of how
well many cross-functional business processes really work.
- Reengineer. Major reductions in all forms of
inventory usually require reengineering the order-to-delivery
cycle to find ways to do it faster, better, cheaper. When you fix
the business processes that caused the excess inventory buffers to
exist in the first place, you will also shorten cycle time,
decrease costs, increase quality and improve customer service.
- Improve Supply Chain Management. By streamlining
the entire supply chain, a company can reduce inventory, improve
time to market, compress cycle times, free up more cash, and
improve profitability. World class manufacturers are beginning to
use every resource at their disposal to speed up the
order-to-delivery cycle, and one result is the reduction of all
forms of inventory. Manufacturers are establishing
computer-to-computer links (EDI) with suppliers and customers to
provide them with a window on their operations. In addition, many
manufacturers are actively consolidating their supply bases by
following a single vendor partnership approach to a much closer
relationship with suppliers. By becoming an integral, larger part
of the customer's and supplier's businesses, both parties gain
greater leverage.
- Improve Production Scheduling. Poor production
scheduling invariably results in manufacturing flow imbalances,
causing bottlenecks and reduced throughput. This will inevitably
result in erratic output, more inventory and longer cycle times.
The old illogical scheduling logic used by most MRP II systems
today needs to be replaced with an approach that works, Donovan
observed.
- Use Effective Performance Metrics. Many
manufacturers actually reward behavior that tends to bloat
inventory levels everywhere. For instance, if production
performance is based on efficiency, utilization and standard hours
produced, you can be assured that parts will get produced and put
into inventory even when there are no orders requiring the
parts.
- Utilize "Pull" Inventory Based on Demand. Many
manufacturers base raw material and/or finished goods inventory
stocking levels on inaccurate, long-term sales projections. The
high cost of these "bad numbers" if they aimlessly drive
operations - as they often do - is the depression of overall
business performance. One result is that companies that use a
total "push" inventory system will end up with high inventories.
An excellent method for achieving greater effectiveness with
working capital and freeing up valuable cash is to acquire
materials and put them through production so fast that inventory
doesn't have time to become a liability. This requires a
well-engineered order-to-delivery process that can have enormous
benefits beyond just inventory reduction.
- Reduce Cycle Times. Cycle time reduction almost
always means reduced costs, reduced inventory levels, improved
production predictability, increased customer service, and better
quality. To reduce cycle time, manufacturers need to streamline
every aspect of their operations, especially the order-to-delivery
process. If this is done right, you will by necessity "fix" many
support functions as well.
- Develop Flexible Manufacturing. When a
manufacturer is rigidly set up to produce long production runs,
there is a tendency to maintain higher-than-necessary production
levels, even in the face of reduced demand. The inflexible
manufacturer maintains high production to absorb overhead in
inventory, making meaningless numbers look good. This practice
inevitably results in cash being frozen in inventory.
To minimize inventory excesses and improve customer
responsiveness, more and more manufacturers are building flexibility
into their operations - flexibility in how they operate to quickly
respond to changing customer demand. The value that a manufacturer
offers its customers is more important than having just the lowest
overall price. Value includes short lead times, quality materials,
on-time delivery, good customer service, and a fair price.
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