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Chapter 9
Hazardous Materials
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Introduction
• This chapter covers the following topics:• Material Safety Data Sheet (MSDS)• Classification of hazardous materials• Handling hazardous materials • Disposing of hazardous materials
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Material Safety Data Sheet (MSDS)
• Occupational Safety and Health Administration (OSHA) :
• Established in 1970• Works to prevent work-related injuries and
death• Aims to create a better work environment
by promoting safety
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MSDS (cont’d.)
• MSDS– Required by OSHA– Must be provided when hazardous substance
is purchased– Law requires copies be kept available for use
by person using the substance• Read each MSDS before handling or
using hazardous materials
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Figure 9-1a Sections of a Material Safety Data Sheet (continues). © 2014 Cengage Learning.
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Figure 9-1b Sections of a Material Safety Data Sheet (cont’d.). © 2014 Cengage Learning.
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Classification of Hazardous Materials
• Hazardous material– Any material capable of causing physical
harm or illness• Department of Transportation (DOT)
– Regulates the transportation of hazardous materials
– Determines which materials are hazardous
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Classification of Hazardous Materials (cont’d.)
• Categories of hazardous materials• DOT specifies packaging for transport• Based on material classification• Packing group I: high danger• Packing group II: moderate danger• Packing group III: low danger• Guidelines for labeling anNined marking
materials
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Figure 9-3 The DOT provides charts that classify hazardous materials. © 2014 Cengage Learning.
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Figure 9-4 DOT labeling for transporting hazardous materials. © 2014 Cengage Learning.
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Handling Hazardous Materials
• Chemicals considered to be nonthreatening :
• Could be hazardous under specific circumstances
• Reactions between two chemicals could prove fatal
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Handling Hazardous Materials (cont’d.)
• Guidelines for chemical storage• Maintain chemicals per MSDS requirements• Ensure containers are labeled in accordance
with OSHA• Close chemical containers when not in use• Use secondary containment such as acid
carriers when transporting hazardous liquids
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Handling Hazardous Materials (cont’d.)
• Guidelines for flammable and combustible liquids :
• Store in a metal container designed for flammable and combustible liquids
• Store containers in a flammable storage cabinet– Cabinets should be properly vented to the
outside of the building
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Disposing of Hazardous Materials
• Federal law regulates disposal method for hazardous materials
• Identify person responsible for collecting hazardous materials
• Waste containers should be clearly labeled with contents– Containers must be safe and non-leaking
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Disposing of Hazardous Materials (cont’d.)
• Reduce amounts of hazardous waste by:• Purchasing only amounts needed• Using the material for intended purposes
only• Transferring spare product to someone
else with legitimate need