pmch 600 industrial hygiene october 19, 2011 r. leonard vance, ph.d., cih
TRANSCRIPT
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PMCH 600 INDUSTRIAL HYGIENE
October 19, 2011R. Leonard Vance, Ph.D., CIH
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WHAT IS INDUSTRIAL HYGIENE
IDENTIFICATION,
EVALUATION, &
CONTROL OF
TOXIC SUBSTANCES & HARMFUL PHYSICAL AGENTS
IN THE WORKPLACE &
IN THE ENVIRONMENT
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• TOXIC SUBSTANCES– CHEMICALS– MICROBIOLOGICAL AGENTS
• HARMFUL PHYSICAL AGENTS– NOISE– RADIATION– ERGONOMICS/REPETITIVE MOTION– HOT & COLD ENVIRONMENTS
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Occupational Health Team
• Occupational Physicians - Dr. Compton• Industrial or ”occupational” Hygienists • Occupational Health Nurse• Microbiologist• Engineers• Safety Personnel• Ergonomists• Chemists & Lab Personnel• radiation, toxicology, epidemiology
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Industrial Hygiene Subject Matter• What, How much, What is to be done???• Identification of Hazards
– experience– study– defined by client
• Evaluation of Hazards– Monitoring: sample collection & analysis
• Control of Hazards– engineering, admin., work practices, PPE
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Typical IH Problems• Survey flooded building for mold• Health Hazard Survey in factory • Indoor Air Quality (IAQ) evaluation• Monitor asbestos/Pb removal at VCU• Lead Inspection - adult/child protection• Noise survey, printing plant• OSHA/EPA Compliance consultation
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Exposures to What
• Infectious agents• Dusts
– Asbestos, silica• Volatile organic compounds
– Benzene, ethylene oxide• Metals
– Pb, Hg• Pesticides/herbicides• Radiation
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Exposure Limits
• OSHA PEL’s (permissible exposure limits)• OSHA STEL’s (short term, 15 minutes)• OSHA ceilings (instantaneous limits)• OSHA BEI’s (biological exposure indices)• ACGIH TLV’s (threshold limit values)
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The Legal FrameworkOSHA Standards
• PEL Permissible Exposure Limit• STEL Short Term Exposure Limit• Monitoring• Methods of Control• Respirators• Hazard Communication• Medical Surveillance• Recordkeeping
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OSHA BENZENE STANDARD• Permissible Exposure Limits
– 1 ppm; 8 hour TWA– 5 ppm 15 min. STEL
• Monitoring• Methods of Control• Respirators• Medical Surveillance
– Next slide• Hazard Communication• Employee Notification• Recordkeeping
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http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=10042
OSHA Benzene Standard on Web
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MONITORING
• Air Monitoring– personal– area– real time– Laboratory Analysis
• Noise• Lead - XRF• Radiation• Hot & Cold
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Methods of Control
• Engineering Controls• Administrative Controls• Work Practices• Personal Protective Equipment
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Engineering Controls
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Negative pressure containment
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Administrative Controls
• Employee Rotation• Ergonomic Hazards• Noise• Lead• Carcinogen Issue - Prohibition
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Work Practices
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Personal Protective Equipment
• Respirators• Protective Clothing• Protective eyeglasses, shoes, etc.• Hardhats
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Respirators
Quarter Mask Half Mask
Full Facepiece Mouthpiece/Nose Clamp(no fit test required)
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RESPIRATORS
• Use & Limitations• Selection• Protection Factors• IDLH Atmospheres• Fit testing, Fit factors• Written Respirator Program
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Hazard Communication
• Placarding & Labeling• Material Safety Data Sheets• Training & Education• Chemical List
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Medical Surveillance
• Done by MD, nurse, audiologist• need to know
– what exposed to– levels of exposure - IH role
• various medical tests– pulmonary function tests– blood lead levels, etc.
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Hot & Cold Environments
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ETHICS
IH WORKS FOR, REPORTS TO, & IS PAID BY EMPLOYER.
DUTY: PROTECT WORKERS
CONFLICTS INEVITABLE
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• Who will determine whether to sample• who will sample• where will samples be collected• who will analyze• who will determine what is to be done• methods of control
Issues
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Why Learn about IH
• Prevent injury and illness!• Why learn about public health? • Protect Safety & Health of Workers/Public• Deal with public concerns/hysteria• Avoid Liability• Promote better relations among
– workers– management– community– government
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References
• www.aiha.org• www.acgih.org• www.abih.org• www.osha.gov• www.cdc.gov.niosh• The Occupational Environment - Its Evaluation,
Control, and Management; DiNardi, S. R. , Ed.; AIHA, 2003; “White Book”
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