07-09-2013, 02:34 PM
Introduction to Industrial Hygiene
Industrial Hygiene[.ppt (Size: 414.5 KB / Downloads: 43)
What is Industrial Hygiene?
Industrial hygiene is the science of anticipating, recognizing, evaluating, and controlling workplace conditions that may cause workers' injury or illness.
Key factors:
Employee exposure to hazards
Control for hazards to protect workers
Steps to Protect Employees
Anticipate potential hazards
Recognize potential hazards
Evaluate exposure and risk
Control exposure and risk
(Not just for health hazards)
Hierarchy of Controls
Engineering controls: Remove hazard
Process change, Chemical substitution
Ventilation, Shielding, Guarding
Requires little or no employee action
Administrative controls: Manage exposure
Worker rotation, Procedures, Training
Trench shoring, Controlled access areas
Requires employee action
Chemical exposures in oil and gas operations
What chemicals are used in oil and gas operations?
How can employees be exposed?
What toxic effects do these chemicals have?
How can employees be protected from these effects?
1910.1000(b) - Table Z-2
Table Z-2 expresses exposure limits as:
8-hour TWA
Ceiling
Peak
If a substance has both ceiling and peak limits: peak = level never to be exceeded
Exposure levels over the ceiling but under the peak must comply with margin notes in table
TWA must still not be exceeded
1910.1020 Access to employee exposure and medical records
Employees, representatives, and OSHA have right of access
Preserved for 30 years, with exceptions
Employee consent for medical records
OSHA access order posted if identifiable
Trade secrets
Employee information