Homework
Welding fumes are a common occupational exposure. Several different welding fumes can cause similar adverse health effects. Personal sampling of a welding operation at a manufacturing facility produced the following 8-hour time-
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Metal Fume
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Result
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OSHA PEL
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ACGIH TLV
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Antimony
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0.05 mg/m³
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0.5 mg/m³
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0.5 mg/m³
|
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Beryllium
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0.00001 mg/m³
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0.002 mg/m³
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0.00005 mg/m³ (I)
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Cadmium
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0.025 mg/m³
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0.1 mg/m³
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0.01 mg/m³
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Chromium
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0.02 mg/m³
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1 mg/m³
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0.5 mg/m³
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Copper
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0.03 mg/m³
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0.1 mg/m³
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0.2 mg/m³
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Iron Oxide
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0.5 mg/m³
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10 mg/m³
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5 mg/m³ (R)
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Magnesium Oxide
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0.02 mg/m³
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15 mg/m³
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10 mg/m³
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Molybdenum
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0.003 mg/m³
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15 mg/m³
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10 mg/m³ (I)
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Nickel
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0.25 mg/m³
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1 mg/m³
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1.5 mg/m³ (I)
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Zinc Oxide
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0.3 mg/m³
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5 mg/m³
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2 mg/m³ (R)
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weighted average (TWA) results for individual metal fumes.
(R) Respirable fraction (I) Inhalable fraction
a. Briefly summarize the primary health effects associated with overexposure to each type of metal fume, including both acute and chronic health effects. Explain what analytical methods you would use for evaluating health hazards in the workplace.
b. Identify the types of metal fumes that would produce similar health effects on an exposed worker. Assume that each listed metal can cause respiratory irritation. Use the equation in 1910.1000(d)(2)(i) to calculate the equivalent exposure (in relation to OSHA PELS) for the metal fumes with similar health effects based on the "Result" column in the table above. Discuss whether you believe any of the individual metal fume exposures or the combined exposure exceeds an OSHA PEL or an ACGIH TLV.
Format your homework according to the give formatting requirements:
a. The answer must be double spaced, typed, using Times New Roman font (size 12), with one-inch margins on all sides.
b. The response also includes a cover page containing the title of the homework, the course title, the student's name, and the date. The cover page is not included in the required page length.
c. Also include a reference page. The references and Citations should follow APA format. The reference page is not included in the required page length.