Before pouring aluminum, the dross (a mixture of aluminum, aluminum oxides and other impurities) is fl uxed out. Many metalcasters do not realize dross is a combustible material that must be handled carefully.
mable, corrosive or toxic gases. Material must be loaded dry and cool. Open top trailers must be covered with a tarp.
Marking and Placarding All containers must be marked to identify the material’s
class—“Aluminum - 4.3 Dangerous When Wet” (Fig. 2)—and its identifi cation number (UN3170). Smaller non-bulk containers must be marked on one side; larger non-bulk containers (more than 1,000 gallons) should be marked on opposing sides. T e transporting vehicle must place the hazardous material label on the sides, front and back of the trailer. Bulk container trucks should place the hazardous material label on both sides, front and back of the trailer.
Shipping T e material must be loaded dry. T e metalcasting facility
must ensure other materials that may be shipped along with the hazardous material are compatible. Class 4 containers must be blocked and/or braced to prevent movement during
Material Description
Aluminum remelting by-products Class 4.3, UN3170, PG II
Emergency Contact: 1-847-555-4444
“This is to certify that the above named materials are properly classifi ed, described, packaged, marked and labeled and are in proper condition for transportation according to the applicable regulations of the Department of Transportation.”
transport that might cause the material to spill or become wet.
Employee Training Hazmat training is required for any employee who
handles, loads or stores aluminum dross. T e training must include general awareness and function-specifi c training on Title 49 requirements for aluminum dross, safety train- ing focused on the hazardous material risks and security awareness training.
Security Plan A security plan is required because regulations have been
written to cover any number of hazardous materials, such as radioactive materials or explosives. For aluminum, risks are low, so the plan can be simple. Metalcasting facilities are subject to having a security plan if 5,000 lbs. (2,268 kg) or more gross weight of one class of hazardous material is being handled. T e written plan should include personal security, unauthorized access and in-route security. T e plan must be retained as long as it is in eff ect.
Quantity / Net Weight 10 hoppers 25,500 lbs
Shown is sample paperwork required to be submitted by a shipper of aluminum dross. Identifi cation number UN3170 provides the universal hazardous material identifi cation code. Packaging group PG II indicates the type of bulk and non-bulk packaging that can be used. The quantity of containers shipped and net weight of the hazardous material also must be supplied.
January 2012 MODERN CASTING | 43
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