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Heat Treated Pallets

HEAT TREATED And ISPM-15 Compliant Pallets

The spread of insects and disease continues to be a major, global concern.  Consequently, by federal law, all Wood Packaging Materials (WPM’s) must be either fumigated or treated using heat to meet compliance standards for all export shipments.  Due to the adverse effects of Fumigation, Heat Treating is the favored method.  KD-HT (Kiln Dried–Heat Treated) lumber will also meet all ISPM-15 government requirements for Heat Treating.  However, Kiln Dried and Heat Treatment are different.

For any cargo being shipped overseas, Alliance Pallets of Chicago, can provide the Heat Treat process for any pallet size, spec or quantity to meet all ISPM-15 federal regulations for export shipments.  This assures your pallets for export will be fully compliant and contain the IPPC stamp requirement.

(Who is the IPPC? Click here for details)

The ISPM 15 treatment certification stamp has several different forms but all contain the same information: The IPPC “Wheat Stamp”, country of origin (xx), facility code (000), and type of treatment (YY). (In the United States, the third-party inspection agency is also included).

Below is what they should see when they click on IPPC:

The IPPC (International Plant Protection Convention) is an international treaty to secure action to prevent the spread and introduction of pests of plants and plant products, and to promote appropriate measures for their control.  It’s governed by the Commission on Phytosanitary Measures (CPM) which adopts International Standards for Phytosanitary Measures (ISPM’s).

(Click here for details on Heat Treatment vs. KD-HT processes)

Heat Treating

The objective of Heat Treating is to exterminate any / all living organisms in the wood.  This Heat Treat process also eliminates any organisms inside the lumber that you can’t see.  Lumber used to construct crates and pallets must also be thoroughly heated treated.

A Heat Treat chamber related to the wood packaging industry is essentially an oven for the specific treatment of the wood for ISPM-15 compliance.  Temperature sensors (known as thermocouples) connected to a recording device are placed in strategic locations within the wood material in the chamber. Gauges outside the chamber insure the core temperature of the wood reaches a required minimum of 133 degrees Fahrenheit (56 Celsius) for 30 minutes. Once that core temperature is attained, no living organisms can survive.  The moisture in the wood has been driven to the surface resulting in a moisture content reduced to 19% or less.  Research has concluded that at 19% content there isn’t enough moisture for an organism to live on.  A kiln can serve the same capacity when specifically calibrated to reach the temperature and time frame specified by the ISPM-15 standards.

Kiln Dried – Heat Treated

The purpose of Kiln-Dried lumber (KD as seen on lumber grade stamps) is to reduce the moisture content

of the wood (19% or less). This is a means to control warping, fungal growth and other quality features.  The kilns or “ovens” the lumber is placed into, don’t necessarily reach the sustained temperature of 133 degrees Fahrenheit (56 Celsius) for 30 minutes that would qualify as Heat Treated.  Many lumber mills today are processing their lumber to meet the Heat Treat requirements of ISPM-15 and you will see a lumber grade stamp of KD-HT. 

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