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Chapter 6Hazardous Chemical

Identification:Hazcom, Toxicology, and DOT

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The Hazard Communication Program

• The Worker’s Right to Know act.

• The purpose of this act is to ensure that the hazards associated with the handling, transport, and storage of chemicals in a plant are evaluated and transmitted to affected personal.

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Manufacture Requirements

• Analyze hazards associated with chemicals• Develop written procedures for evaluating

chemicals• Document hazards and develop MSDSs and

warning labels• Disseminate the information to affected

individuals• Label, tag, and attach warning documentation

to chemicals leaving the workplace

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Employer Responsibility

• Preparing a written HAZCOM program

• Organize a hazardous chemical inventory list

• Design individual MSDSs

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Figure 6-1 HAZCOM

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Material Safety Data Sheet

• One in four workers in the U.S. handles chemicals

• Development of the MSDS is the responsibility of the chemical’s manufacturer

© 2012 Delmar, Cengage LearningFigure 6-2 Sample MSDS

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Toxicology

• The science that studies the noxious or harmful effects of chemicals on living organisms

• There is a relationship between dose and response

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Exposure Limits

• Exposure limits are designed to allow a process tech

• Threshold limit value

• Occupational exposure limits

• Permissible exposure limits

• Supplier recommended limits

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Department of Transportation Labeling System

• Uses a diamond shaped pattern with colors, symbols, and numbers that correspond to specific hazards.

• Does not indicate the severity of the hazard.

• Materials are classified into 10 categories.

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Figure 6-3 DOT System

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DOT Shipping Papers

• Information must be in English and can be handwritten

• No codes or abbreviations in the official document.

• An MSDS should be included with any material being shipped.

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Hazardous Material Identification System

• The chemical name

• Health hazard

• Flammability hazard

• Reactivity hazard

• PPE requirements

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Figure 6-6 HMIS System

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National Fire Protection Association

• Utilizes four small diamonds arranged into one large diamond

• Blue – health hazards

• Red – fire hazards

• Yellow – reactivity hazards

• White – specific hazards

© 2012 Delmar, Cengage LearningFigure 6-7 NFPA System