Answer Happy

QUESTION 7 Sampling for cyclohexanone was done over 2 hours and results were 65 ppm. . pts Q# 1 7a) 1 7b) 2 7c) 1 7d) Question What is the TWA if the 2 hr sample represented the whole 8 hr day exposure? What is the TWA if the 2 hr sample represented exposure for a 2 hr task and the rest of the day has no exposure? What is the OSHA PEL 8-hr TWA for cyclohexanone? Cite your source. Was the OSHA PEL 8-hr TWA for cyclohexanone exceeded in either case? set up o 4 sorbent tubes were used to measure exposure to cyclohexanone for 1 worker over 8 hrs. See results below. 1 pts Q# Question 2 1 7e) What is the total exposure to the worker? 3 1 7f) Was the OSHA PEL 8-hr TWA for cyclohexanone exceeded for with scenario? 4. Time Task Results ppm 5 7:00-8:00 10 6 8:00-9:30 pouring 15 7 9:30-11:30 blending 45 8 11:30-12:00 lunch 0 9 12:00-3 mixing 25 o 1 1 7g) Calculate the 8-hour TWA exposure for a mixture of air contaminants: 2 Substance Conc PPM 8-hr TWA PEL PPM 3 A 500 1000 4. B 45 200 5 с 40 200 6 2 7h) Is there an exceedance? Why? 7 10 8 9 QUESTION 7 SOLUTION 0