Potential energy can be called a potential hazard in the workplace. The key to avoiding injuries and illnesses is to prevent the individuals in the workplace from being overexposed to the kinetic energy in the hazards. This table summarizes major characteristics of potential physical hazards in the workplace.
In next month's article we will review the three major types of controls, engineering, administration, and personal protective equipment.
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Hazards |
Occupational settings |
Measurement |
Exposure guidelines |
Effects of exposure |
Surveillance |
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Worker-material interfaces |
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Repetitive ergonomic hazards – extremities |
Service and industrial operations |
Repetition, force, posture |
OSHA (pending) |
Musculo-skeletal strain, tunnel syndromes |
Survey workers, observe tasks, measure physical parameters of the job |
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Manual materials handling-backs |
Service and industrial operations |
Repetition, force, posture |
NIOSH lifting guide |
Musculo-skeletal strain, disc herniation |
Survey workers, observe tasks, measure physical parameters of the job |
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Vibration |
Whole body-vehicle/heavy equipment/industrial equipment operator, hand-arm-powered hand tool users |
Frequency, motion |
ISO 2631, ANSI S3 NIOSH criteria document, ACGIH |
Whole body-low back pain, Hand-arm-hand arm vibration syndrome (HAVS) |
Survey workers, observe tasks, measure physical parameters of the job |
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Mechanical energy – direct injuries |
Service and industrial operations |
Velocity, distance, acceleration, force, weight, pressure, friction |
None |
Direct Injury |
Epidemiology of workplace injuries |
The physical work environment |
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Hot environments |
Hot indoor or outdoor environments |
Wet globe bulb temperature, core temperature |
ISO 7243, HIOSH criteria document |
Heat strain, heat stroke |
Heart rate, core temperature, worker selection |
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Cold environments |
Cold indoor or outdoor environments |
Wind chill, core temperature |
ACHIH-TLV |
Frostbite, trench/immersion foot, hypothermia |
Worker selection |
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High-pressure environments |
Divers, caisson workers |
Pressure in atmospheres absolute (ATA), changes in pressure |
OSHA, marine occupational health safety standards |
Barotrauma, decompression sickness, indirect effects secondary to pressure acting on other gases (O 2 , N 2 ) |
Worker selection |
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Low-pressure environments |
Aircraft crews, private pilots, astronauts |
Pressure in atmospheres absolute (ATA), changes in pressure |
None |
Barotrauma, decompression sickness, hypoxia |
Worker selection |
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Shift work |
Service and industrial operations |
Rotation, duration and hour changes of shift schedule |
None |
Sleep disturbance, gastrointestinal upset |
Worker selection |
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Energy and electromagnetic radiation |
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Ionizing radiation |
Pilots, underground miners, radiographers, medical and dental X-ray personnel, operators of high-voltage equipment, nuclear power and fuel cycle workers, medical and scientific researchers, some commercial products manufacturing |
Personal dosimetry of radiation exposures |
NCRP, ICRP, NRC, UNSCEAR |
Acute radiation injury, carcinogenesis |
Personal dosimetry. Lung and whole body scanning, biological monitoring as appropriate |
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Ultraviolet radiation |
Outdoor workers, welders, printers |
Wavelength, intensity |
ACHIH-TLV |
Corneal photokeratitis, skin erythema, cataracts |
None |
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Visible light and infrared radiation |
Outdoor workers, welders, printers, glass blowers |
Visible duration, wavelength, intensity. Infrared wavelength, intensity |
ACHIG-TLV |
Visible-scotoma, thermal burn, photosensitivity, urticaria. Infrared-thermal burns, cataracts |
None |
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Laser radiation |
Service and industrial operations, researchers, medical personnel, maintenance personnel |
Wavelength, power, energy, duration |
ACGIH-TLV, (ANSI Z136.1) |
Retinal and skin burns |
Required for Class 3b and 4 lasers. Baseline and post-exposure retinal exams |
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Microwave, radiofrequency (MW/RF) and extremely low-frequency (ELF) radiation |
MW/RF – communication workers, industrial heating and RF welding operations. ELF – electricians and electrical workers, telephone and cable workers, electric arc welders, movie projectionists |
Frequency, electric field, magnetic field, power density, operating mode |
ACGIH-TLV, OSH |
MW/RF-Thermal effects
ELF- No proven effects |
None |
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Noise |
Service and industrial operations |
Time-weighted dBA |
NIOSH, OSHA |
Noise induced hearing loss |
Hearing conservation program for all exposed workers |
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Electric power and electrocution injuries |
Service and industrial operations |
Current, voltage |
OSHA |
Electrical burns, electrocution |
None |
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