Presentation on theme: "OVERVIEW OF INDUSTRIAL HYGIENE"— Presentation transcript:
1OVERVIEW OF INDUSTRIAL HYGIENE UNIVERSITY OF HOUSTON DOWNTOWN CAMPUSFALL 2013
2DEFINITIONIndustrial Hygiene (IH) is that science devoted to the anticipation, recognition, measurement, evaluation, and control of adverse stresses or agents which could cause sickness and impaired health among workers and the community. The basic goal of IH is to promote a safe and healthful work environment.
3IH FOCUS 1. Hazardous agents in workplace 2. Health effects associated withexcessive exposures3. OELs for each agent4. Workforce organization and staffing5. Significant sources of exposure; tasks and work procedures involved6. Control measures
5RECOGNITIONRequires knowledge and understanding of workplace environmental stresses and effects on health of the worker; hazard potential of materials is determined by toxicity and also conditions of use.
6RECOGNITIONDetailed information to be obtained regarding types of hazardous materials used, type of job operation, worker exposures and patterns, levels of air contaminants, exposure duration, control measures, etc. Consult product information including MSDSs.
7TOXICITY VS. HAZARDToxicity is the capacity of a material to produce injury or harm when the chemical has reached a sufficient concentration at a certain site in the human body.Hazard is the probability that this concentration win the body will occur; affected by many factor/elements.
8DEGREE OF HAZARD Nature of material Intensity of exposure Duration of exposure
9EVALUATIONInvolves monitoring and analytical methods required to detect the extent of exposure; decision-making process resulting in an opinion on the degree of health hazard that exists; extent of potential health hazards based on comparisons of environmental measurements with current governmental regulations and recommended guidelines.
10EVALUATION Air sampling can be involved. Breathing zone exposures are preferred.Air volume sampled must be sufficient to permit a representative determination of the contaminant to properly compare the results with the PEL and/or TLV.
11CONTROLInvolves the reduction of environmental stresses to levels that the worker can tolerate without impairment of health or productivity; various general control methods employed.
12CONTROL METHODSEngineering – remove the hazard; should be considered first.Administrative – reduce exposures through scheduling; also included is employee training; not generally favored.Personal Protective Equipment (PPE) – use should be secondary to engineering.
13ENGINEERING CONTROLS Substitution Change in process Isolation EnclosureWet methodsVentilationGeneralDilution
14ADMINISTRATIVE CONTROLS Examples:Arranging work schedules and the related duration of exposure to limit employee exposures to health hazards.Transferring employees at PELs to an environment where no additional exposure will be experienced.Housekeeping
15ADMINISTRATIVE CONTROLS Administrative controls must be designed only by knowledgeable health and safety professionals, and used cautiously. Not as satisfactory as engineering controls and have been criticized as a means of spreading exposures instead of reducing or eliminating the exposure.
16PPEPPE may be used to protect the worker when it is not feasible to render the working environment completely safe. This is considered a secondary control method to engineering and administrative controls and should be used as a last resort.
17EFFECTIVE IH PROGRAMApplies knowledge to the anticipation and recognition of health hazards arising out of work operations and processes, evaluation and measurement of the magnitude of the hazard based on past experience and study, and control of the hazards.
24OTHER HAZARDS Confined Spaces Waste Management Lab Health and Safety Emergency Planning
25FEDERAL REGULATIONS Occupational Safety and Health Act Enacted on December 29, 1970Effective on April 28, 1971Purpose: “assure so far as possible every working man and woman in the nation safe and healthful working conditions and to preserve out human resources.”
26OSHA ACT DUTIESEmployers must furnish a place of employment which is free from recognized hazards that are causing or are likely to cause death or serious harm to employees.Each employee shall comply with occupational safety and health standards.
27OSHA/NIOSHOSHA is housed within the Department of Labor (DOL). The OSHAct also established the National Institute of Occupational Safety and Health (NIOSH) which is located within the Centers for Disease Control and Prevention (CDC). CDC is part of the U.S. Public Health Service.
28OSHAOSHA empowered to promulgate safety and health standard with technical advice from NIOSH. OSHA can enter workplaces for investigation of alleged violations of standards and to perform routine inspections. Formal complaints can be made by employees or their representatives.
29OSHACT Right to issue citations and penalties Provide for employee walk-around surveys or interviews during inspectionRequire employers to maintain accurate records or exposures to potential hazardous materialsInform employees of monitoring results
30NIOSHPrincipal federal agency engaged in occupational health and safety research.Responsible for identifying hazards and making recommendations for regulations such as RELs. Also issues criteria documents and health hazard alerts on various hazards and tests and certifies respiratory protective equipment.
31PROFESSIONAL ETHICS AIHA ACGIH AAIH ABIH Development of common code of ethics.
32CANONS OF CONDUCTPractice their profession following recognized scientific principles with the realization that the lives, health, and well-being of people may depend upon their professional judgment and that they are obligated to protect the health and well-being of people.
33CANONS OF CONDUCTCounsel affected parties factually regarding potential health risks and precautions necessary to avoid adverse health effects.Keep confidential personal and business information obtained during the exercise of IH activities, except when required by law or overriding health and safety considerations.
34CANONS OF CONDUCTAvoid circumstances where a compromise of professional judgment or conflict of interest may arise.Perform services only in the areas of their competence.Act responsibly to uphold the integrity of the profession.
35OHS GOALPrevent occupational injury and illness by anticipating, recognizing, evaluation, and controlling occupational health and safety hazards.
36VITAL COMPONENTSEffective health and safety program is the commitment of Senior Management and Line Management.Includes visible involvement; assignment of authority as well as the responsibility to carry out the health and safety program.
37IH PROGRAM ELEMENTS Written Program/Policy Statement Hazard Recognition ProceduresHazard Evaluation and Exposure AssessmentHazard ControlEmployee TrainingEmployee InvolvementProgram Evaluation and AuditRecordkeeping
38OST TEAM COMPONENTS Industrial Hygienist Safety Professional Occupational Health NurseOccupational Medicine PhysicianEmployeesSenior Line Management
39INDUSTRIAL HYGIENISTIndustrial Hygienists are occupational health professionals concerned primarily with the control of environmental stresses or occupational health hazards that arise as a result of or during the course of work.
40SAFETY PROFESSIONALSpecialized knowledge in the physical and social sciencesUnderstand factors contributing accident occurrence along with motivation, behavior and communication to control safety hazardsPotential combination of IH and Safety positions due to relatively common responsibilities
41OCCUPATIONAL HEALTH NURSE Key to delivery of comprehensive health care services to workersFocused on promotion, protection, and restoration of workers’ health within the context of the work environmentCritical link between employee’s health status, work process, and the determination of employee ability to do job.Case management approach to return injured employees to work on a timely basis
42OCCUPATIONAL PHYSICIAN Goal is to prevent occupational illness and when illness occurs, to restore employee health within the context of a health and safe workplaceRegulations require medical surveillance programs with specific criteriaDetermination of work-relatedness of disease
43OTHER COMPONENTSEmployeeSafety and Health Committee
44ROUTES OF ENTRY AND EXPOSURE PATHWAYS InhalationIngestionSkin or Eye AbsorptionInjection
45MONITORINGMeasurement of exposure concentrations during a given time period. Monitoring data are used to help resolve, refine, or confirm the exposure assessment.Consideration of area vs. personal monitoring to determine exposures.