Industrial Hygiene OHS Introductory

Industrial Hygiene

science and art developed to the anticipation, recognition, evaluation, and control of those environmental factors and stresses arising from workplace

Occupational Hygiene

science that deals with relationship

occupational health

highest degree of physical, mental and social well-being of workers in all occupations

hazard

it is a factor or exposure that may adversely affect health

risk

probability that something undesirable will happen as a consequence of exposure to a hazard

anticipation

Main Step in the practice of occupational hygiene

• forecasting of possible hazard

• commitment

• planning

• design

• training

recognition/ evaluation

Main Step in the practice of occupational hygiene

• identification of health hazards in workplace

• exposure assessment

• monitoring studies

• observations

evaluation

Main Step in the practice of occupational hygiene

• confirms the occurrence of suspected hazardous agents

control

Main Step in the practice of occupational hygiene

• preventive measure

• substituting

• engineering approach

• administration

• PPE

Occupational Health Hazard

Classified into

1. physical hazard

2. chemical hazard

3. biological hazard

4. ergonomic hazard

ACGIH

American Conference of Governmental Industrial Hygiene

Occupational Safety and Health Administration (OSHA)

Responsible for

• authorized to inspect workplaces and issue citations and civil penalties to employers who are not in compliance

National Institute of Occupational Safety and Health (NIOSH)

Responsible for

• research on worker health and safety. It also recommends new standards to OSHA and supplies OSHA with specific and technical expertise for the rule making process

Occupational Safety and Health Review Commission (OSHCR)

Responsible for

• It is an independent agency having the responsibility to try OSHA cases and to hear appeals from decisions of administrative law judges

Threshold Limit Values TLV

developed by American Conference of Governmental Industrial Hygiene (ACGIH)

Recommended Exposure Limit REL

developed National Institute of Occupational Safety and Health (NIOSH)

Permissible Exposure Limit PEL

• refer to the concentrations of a substance in which nearly all worker’s may be exposed day after day for a working

Time Weighted Average TWA

• concentration for a normal 8hr workday and 40hr workweek, to which nearly all workers may be repeatedly exposed day after day without adverse effect

Short Term Exposure Limit STEL

• A 15min time weighted average exposure which should not be exceeded at any time, even if the 8hour TWA is within TLV

• 15mins max and should not occur more than 4 times a day

• there should be 60mins between successive exposure in this range

Ceiling

• absolute max level of exposure is not exceeded

• acceptable max peak