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Industrial Hygiene Approach to EHS Issues in Schools: Assessment, Controls, Design, and Prevention

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Title: Industrial Hygiene Approach to EHS Issues in Schools: Assessment, Controls, Design, and Prevention


1
Industrial Hygiene Approach to EHS Issues in
Schools Assessment, Controls, Design, and
Prevention
  • Lorraine M. Conroy, ScD, CIH
  • Associate Professor
  • University of Illinois at Chicago
  • School of Public Health

April 6, 2002
2
Prevention
  • What are we preventing?

3
Prevention
  • What are we preventing?
  • Injuries and Illnesses
  • Exposure

4
Prevention
  • How are we preventing injuries and Illnesses?
  • Early Identification and Treatment (medical)
  • Exposure Elimination or Reduction (industrial
    hygiene)

5
Industrial Hygiene
  • What is Industrial Hygiene?

6
Industrial Hygiene
  • What is Industrial Hygiene?
  • Anticipation, Recognition, Evaluation, and
    Control of hazardous substances or agents

7
Industrial Hygiene
  • Anticipation
  • what are potential hazards that may be introduced
    with processes or products?
  • Recognition
  • what are potential hazards in the workplace?
  • Evaluation
  • how severe are the potential hazards? Are the
    potential hazards truly hazardous?
  • Control
  • how can potential health hazards be eliminated or
    minimized?

8
Hazard Anticipation
  • Obtain the process flow chart or description
  • Obtain ingredient and product information
  • Read the equipment descriptions
  • Study the building and process design plans
  • Identify exposures to toxic agents
  • Anticipate exposure hazards during normal
    conditions and process upsets
  • Consider the potential health effects

9
Hazard Recognition
  • Sketch the floor plan
  • Identify the hazard sources
  • Place the sources on the plan
  • Place the receivers on the plan
  • Show the pathways between them
  • Consider the potential health effects

10
Workplace Characterization
  • What is the process?
  • Activities?
  • Raw materials?
  • Products?
  • By-products?
  • Waste products?
  • Processing aids?

11
Workforce Characterization
  • job title / job description
  • task analysis
  • exposure duration
  • shift length continuous
  • number of workers / community members / family
    members
  • other considerations
  • children

12
Characterization of Agents
  • Form of agent
  • chemical
  • physical
  • biological
  • Health effects
  • toxicology
  • epidemiology
  • Exposure Limits
  • occupational
  • environmental
  • children

13
Characterization of Agents
  • Health Effects
  • Sources of Information
  • Material Safety Data Sheets (MSDS)
  • Toxicology Literature
  • Epidemiology Literature
  • Internet

14
Hazard Evaluation
  • Qualitative Exposure Assessment
  • Quantitative Exposure Assessment
  • Is the exposure acceptable?

15
Exposure Limits
  • Regulatory
  • Occupational Safety and Health Administration
  • Environmental Protection Agency
  • Nuclear Regulatory Commission
  • State and Local Health Departments
  • Non-regulatory

16
Hazard Control
  • Hierarchy of Controls

17
Source Controls
  • Substitution
  • Process Change
  • Process Enclosure
  • Process Isolation
  • Wet Methods
  • Local Exhaust Ventilation
  • Adequate Maintenance Program

18
Pathway Controls
  • Housekeeping
  • General Exhaust Ventilation
  • Dilution Ventilation
  • Distance
  • Continuous Area Monitoring
  • Adequate Maintenance Program

19
Receiver (Worker) Controls
  • Training Education
  • Rotation
  • Enclosure of Worker
  • Personal Monitoring Devices
  • Personal Protective Devices
  • Adequate Maintenance Program

20
Hazard Control
  • Advantages
  • Source
  • Pathway
  • Receiver
  • Limitations
  • Source
  • Pathway
  • Receiver
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