Question
20. Exposure in a painting facility. All concentrations are in parts per million averaged over the specified period. Calculate the 8-hour TWA for each substance
20. Exposure in a painting facility. All concentrations are in parts per million averaged over the specified period. Calculate the 8-hour TWA for each substance and calculate the mixture TLV (assume they cause the same health effect). Report the concentration in ppm and mg/m3. Was the worker over exposed to any 8-TWA-TLVs? Mixture 8-TWA-TLV or PELs ( Look up the TLV)? Assume NTP MW = 106 g/mol for Xylene, TLV of 100) and 86.18 g/mol for Hexane (TLV of 50). Time Xylene (PEL 100 ppm) Hexane (PEL 50ppm) 8:00-10:30 (2.5 hrs) 40 13 10:30-12:00 (1.5 hrs) 35 9 12:00-1:00 Lunch Lunch 1:00-1:30 (0.5 hrs) 110 12 1:30-3:30 (2.0 hrs) 17 72 3:30- 5:00 (1.5 hrs) 10 83
Exposure in a painting facility. All concentrations are in parts per million averaged over the specified period. Calculate the 8-hour TWA for each substance and calculate the mixture TLV (assume they cause the same health effect). Report the concentration in ppm and mg/m3. Was the worker over exposed to any 8-TWA-TLVs? Mixture 8-TWA-TLV or PELs ( Look up the TLV)? Assume NTP MW = 106 g/mol for Xylene, TLV of 100) and 86.18 g/mol for Hexane (TLV of 50).
Time Xylene (PEL 100 ppm) Hexane (PEL 50ppm)
8:00-10:30 (2.5 hrs) 40 13
10:30-12:00 (1.5 hrs) 35 9
12:00-1:00 Lunch Lunch
1:00-1:30 (0.5 hrs) 110 12
1:30-3:30 (2.0 hrs) 17 72
3:30- 5:00 (1.5 hrs) 10 83
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Industrial Plastics Theory And Applications
Authors: Erik Lokensgard
6th Edition
1285061233, 978-1285061238
