An Evaluation of a Workplace Hazard: Carbon Monoxide . University of Central Florida, Introduction to Industrial Hygiene EIN 6264 April 1998 Submitted by, Tim Wallace, R.S [email protected] Identification of Workplace Hazard.
University of Central Florida,
Introduction to Industrial Hygiene
Tim Wallace, R.S
CO simply disrupts the oxygen transport to all tissues in the body.
CO combines with hemoglobin in blood to form carboxyhemoglobin (COHb)Nature of Hazard
a. cardiovascular disease (heart disease, coronary artery disease)
b. pulmonary disease (asthma, emphysema, chronic bronchitis)
c. blood disorders (sickle cell anemia, lassemia, others)
NRC = National Research Council
EEGL is Emergency Exposure Guidance Levels
Canadian IAQ Residential Exposure Guidelines: <11 ppm for 8 hrs, <25 ppm for 1hr (ASTER)
WHO Concentration of Concern is >30 ppmOther Guidelines
8 hour work day (~ 6 hrs of mowing)
work equipment varied
some CO exposure expected
Mowed two properties.
One property was approximately 1 acre and was mowed with push mower
2nd property was about 2.5 acres and was mowed by riding mowerCO Study, Occupation: Lawn Care Worker
There seems to be few published reports on this type of a study. Some reports focus on small gasoline engines used inside buildings where the CO is easily concentrated.Subject of Study:
Graph of Data (available as handout)
Breaks and Lunch are distinct on data graphComments on Data
CO is especially a hazard in enclosed spaces
CO did not seem to be a serious hazard during normal mowing operations.
If CO levels were high and exceeded applicable TLVs, Control measures could be effectively instituted.Summary of Key Points
Injuries (overturned tractors, cuts, eye injuries, thrown debris)
UV radiation exposure
exposure to bioaerosols (mold spores, pollen) - a problem for asthmatics and allergy sufferersNote: Other Potential Hazards Associated w/ Featured Occupation