Bark-Free Pallets? The Issue Facing the World's Wooden
Pallet Industry
In 2002, one hundred and thirty-two countries came together
in agreement to implement ISPM 15, an international guideline for regulating
wood packaging material for international shipments, with the objective of
controlling undesirable translocation of quarantined biological pests. In
an extension of this standard, Australia, the EU, and other countries are
proposing further that this packaging be manufactured free of tree bark.
Their contention is that bark is a pathway for re-infestation, whether treated
or not. While technical studies are in progress to test the proof of this
theory, we at Penn State are studying the economic ramifications on the North
American pallet producing industry, as well as their suppliers and customers,
of adoption of this specific additional regulation.
The component issues of the potential economic issue are
many.
Impact on North American export/import
trade. U.S. Department of Commerce statistics reveal that the United States
carries on $4 trillion worth of trade internationally, and $160 billion
is exported to the EU alone. The National Wooden Pallet and Container Association
estimates that approximately one-half of this trade is conducted on wooden
pallets and containers. At question then, is how much of this trade
would be impacted, possibly through quarantine and/or rejection at the ports
of the world.
Impact on North American continental logistics costs.
Industry experts suggest that any bark-free regulation enforced on international
shipments will become de-facto standards for all wooden pallets, as customers
recognize and seek to avoid additional management costs of additional sortation.
Environmental impact of lower yield on a major part
of the consumed lumber in North America. The practice of manufacturing
wooden pallets and crates from lower-grade material containing bark, wane,
woody knots, and other similar defects has been considered in the past an
excellent use-appropriate outlet for lumber that might otherwise be scrapped
or sold for lower value chip and fuel. However, prohibition of these types
of defects in the wooden containers and pallets would require either:
Additional re-manufacturing of the low-grade lumber
to eliminate the defects, and/or
Purchase of higher-grade lumber that normally goes to
higher value solid-wood uses, such as furniture, cabinetry, and flooring.
The market impact of this potentially increased
demand for higher-grade lumber, and lower demand for the lower-grade component.
Cultural and administrative costs, sometimes
labeled "transaction costs." In most parts of the world, regulation
enforcement carries additional burden in the form of administrative costs,
enforcement costs, or costs related to overcoming cultural barriers, such
as graft and kick-backs.
The data forming the context of this issue vary widely from
region to region, but these are baseline data from which the problem can be
primarily formulated.
95% of all U.S. packaged products are shipped on pallets,
92% of which pallets are made from wood (1).
Nearly $400 billion worth of U.S. trade is exported annually
on wood pallets and containers worldwide (1).
The U.S. wooden pallet and container industry is $5.1 billion
industry, of which the approximately 2800 component companies paid $20 million
in taxes and license fees, employed an average of over 17 workers per company,
and added over $1.1 billion in wages to typically rural, economically depressed
areas (2).
The industry consumed over $2.6 billion in raw material,
and added over $2.4 billion in value to it, resulting in over $5 billion worth
of shipments. In order to keep this economic engine running effiicently, the
industry has spent nearly 800 million on capital equipment from 1997 to 2002
(2).
Over 85% of the 12,000+ lumber producing mills have log
debarkers, and probably more than 95% of all U.S. lumber by volume is debarked
prior to sawing (3).
At current debarker industry production rates, it would
take 8-9 years for the remaining sawmills to acquire debarkers assuming all
mills placed orders, and assuming mills currently with debarkers did not place
additional orders (3).
However, the cost of debarker equipment, which ranges from
$20,000 to $75,000 for a used debarker and $30,000 to $250,000 for a new debarker,
would preclude many of the smaller sawmills, those currently without debarking
equipment from upgrading.
Log debarking does not guarantee bark-free logs
or lumber. The highly variable shape of logs, and texture of bark,
dictates that most logs are debarked to varying degrees of success. Below
are two examples of debarked logs in one of the largest, most high-tech sawmills
in the Pacific Northwest.
Due to the incomplete debarking of logs and resulting lumber,
much of the lumber supplied to the pallet industry has some degree of bark
occurrence, whether in the board, cant, or pallet "shook" form.
This bark occurrence takes many forms and appearances, but it continues to
appear as an issue on some percentage of the lumber as it gets re-manufactured
for pallet component usage. The ten pictures below are examples of typical
bark (or bark-like) occurrence in pallet lumber stock, in degrees from "a
little" to "a lot".
Past research indicates that the difference in lumber recovery
between square-edged lumber sawing and sawing to allowable wane specifications
is between 5.5-8% (4) and 18% (5). These studies were run on higher grade
lumber; for pallet grade material, these percentages would certainly be much
higher. For instance, assuming a conservative 20% yield loss due to square-edged
sawing requirements, one could project an equivalent increase of resource
consumption...that is, an additional one tree for each five trees
harvested would additionally need to be cut to meet current requirements of
the industry.
Recent research estimates the number of wooden pallets used
in exportation of U.S. products to be over 63 million (6).
Our recent research efforts have focused on determination
of the amount of pallet and wooden container product, certified as ISPM 15
compliant through treatment, which actually still contains at least one occurrence
of bark. Based on data collection at pallet mills and customer inventories
throughout Pennsylvania, Ontario, and Washington, we found roughly
20% of 3750 ISPM-compliant pallets retained at least one bark occurrence.
One might extrapolate from the estimate in point (17) above then, that 12-13
million ISPM certified pallets of U.S. goods could be targeted for exclusion
(and resulting in quarantine and/or rejection) by any "bark-free"
addition to the current ISPM 15 agreement.
Some examples of bark or bark-like occurrences tallied in
the pallet data cited in point (18).
Typical pallet-product use example (shown below): Hi-value
pallets manufactured for high-tech semiconductor company. Product value per
pallet: about $250,000. Bark occurrence rate: 33%.
Another typical pallet-product use example (shown below):
Specialty pallet-box combo manufactured for seasonal fragile products. Product
value per container: about $1000. Bark occurrence rate: 50%.
Based on this early data collection, we have strong evidence
that a proposal to require bark-free pallets for international trade will have
far-ranging and deep economic impact around the world. The wide range of issues,
and the depth through the world's logistical supply chain at which economic
impact might be incurred, appear to hide significant potential for large economic,
environmental, and socioeconomic loss. This TechNote is the first in a series
that will explore these economic ramifications in more detail. As this information
is developed, an economic model will be developed to determine how large the
total economic impact of mandated "bark-free" wooden pallets could
be.
(6) "Impact of international phytosanitary
standards on wood packaging materials end users: Pre-implementation assessment."
2005. Molina-Murillo, S., T. Smith, M. Reichenbach, amd R. Smith. The Forest
Products Journal 55(9):24-26.