MHR 711 Lecture Notes - Lecture 5: Sunburn, Jackhammer, Miliaria

• School: Ryerson University
• Department: Human Resources
• Course: MHR 711
• Professor: Busuyi Aroso

Document Summary

Sources of energy that may cause injury or disease. Examples: noise, vibration, radiation and extremes in temperature and pressure, may be acute or ambient, acute resulting from a single exposure. Ambient all-encompassing condition associated with a gien environment being usually a composite of inputs from sources all around us. Noise = any unwanted sound, most common workplace hazard. Contruction workers, cafeteria workers, farmers are among some of the professions most at risk for hearing damage, especially early warning change as a result of noise. 95% of construction workers were exposed to some type of noise on a daily basis. What may seem to be very small numeric difference is actually represented as a very loud difference in loudness. When the human response is involved, the unit becomes dba or a weighted decibel. Noise is often assessed using a unit of measurement known as hertz (hz) , where hz is one cycle per second.