OSH 6302 Assignment 3

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Columbia Southern University *

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6302

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Industrial Engineering

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Jan 9, 2024

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1 Acme Auto Parts Sampling Methods Christian Hallock Columbia Southern University OSH 6302 Dr. Boothe February 11, 2023

2 ACME Auto Parts Sampling Methods An inspection of the ACME Auto Parts facility was recently conducted to establish any hazards to the workforce that may exist. During the inspection of the ACME facility, the following items will be sampled to determine workplace exposure levels; lead fume, xylene, metal working fluids, and noise. Each section will describe sampling methods, sampling equipment, rates, minimum times, and additional information. Lead Fume NIOSH 7302 0.05mg/m3 Lead fume was found on site and will be one area of focus for the sampling onsite. The personal sampling pump with a sample train will be used. “ A calibrated personal sampling pump is used to draw a known volume of air through a mixed-cellulose ester (MCE) membrane filter with back-up pad (BUP) contained in a polystyrene cassette” (OSHA 1006). The minimum flow rates range from 1 to 4 liters per minute and will be calibrated using a DryCal connected to the pump per the manufacturers recommendations. The minimum sampling time will be calculated using the minimum sample volume of 30 L and a rate of 2 L per minute (OSHA-IDG 125G). a. Time = air volume / flow rate b. Time = 30L/2L per min c. Time = 15 minutes Collection will be conducted using personal pumps based on the assumption that the area of work will have the highest concentration of lead fume. This will assist in better analyzing the exposure to the worker and provided more accurate readings than the stationary sampling device (Le et al, 2016). A noted interference are spectral interferences. These are the most common interference found. (Center for Disease Control (CDC), 2014). Recommended shipping is routine shipment, and that no refrigeration is required (OSHA, p. 16)

3 Xylene OSHA 1002 100ppm 8-hour TWA Xylene was in the painting areas of the facility. Active samples are collected by drawing workplace air through coconut shell charcoal sampling tubes with personal sampling pumps (OSHA 1002). All collection devices should be calibrated to a range of 0.5 to 2 times the OSHA PEL (OSHA 1002). The recommended flow rate is 1 L per minute and a volume of 15 L (OSHA Chemical Data). T = V/R T = 15 L/1L/m T = 15 minutes Personal samples will be collected to obtain the data on workers exposure rather than on a stationary collection’s device. “The collection efficiency of all analytes for all samples was above 101.2% when three charcoal tubes were used to sample 12 L of air containing one times the target concentration of mixed xylenes, 365 mg/m3 toluene, 372 mg/m3 butyl acetate, and a relative humidity of 81% at 21 EC (OSHA 2.7.1).” Refrigeration is necessary if any delay to laboratory and all bulk samples should be kept separate from other air samples (OSHA 1002). Refrigeration is necessary if any delay to laboratory and all bulk samples should be kept separate from other air samples (OSHA 1002). Metal Working fluids NIOSH 5524 0.5mg/m3 10-hour TWA REL Metal Working fluids can cause a health hazard for employees at the facility. To sample these materials, a thoracic particles sampling device with filter and cone will be used (CDC, 2014). The recommended flow rate is 1.6L per minute for thoracic and total of 2L per minute (CDC, 2014). Micro balancing equipment will be used and must be zeroed out prior to weighing of samples. To calibrate, it is recommended to use the ASTM Class 1 calibration weight, which according to Scales Plus author Josh M., “it is recommended to use the ASTM Class 1 weight when calibrating devices that can weigh out to a

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4 fraction of a gram” (M., 2019). Three weights will be taken and all on the same balance. To calculate the minimum time for sampling, the volume of 768 L at a flow rate of 1.6 L/m will be used (NIOSH 5524). T = V/R T = 768 L / (1.6 L/m) T = 480 minutes Sampling will be conducted using the cyclone device located in an area of high concentration over the set sampling time. Welding fume may interfere with the sampling and should be taken into consideration (CDC, 2014). It is recommended overnight shipment in a refrigerated container for all samples (CDC, 2014). Noise 90 dBA OSHA 8-Hour TWA According to Patafi et al. (2021), “Occupational noise is common cause of noise induced hearing loss (NIHL) as well as non-auditory effects like frustration, sleep disturbances, hypertension, cardiovascular diseases and cognitive impairment.” To sample noise throughout the facility, the use of dosimeter is recommended. The dosimeter can store measurements over time and provided a total average of the measurements (OSHA 1910.95, 2019). Calibration of all dosimeters should be conducted per the manufacturer’s guidelines. Each dosimeter would be placed on a person to determine the exposure to the operator in a particular area of the facility. Each area of the facility should be reviewed to determine the high exposed areas to loud noise.

5 References 1910.95 App G - Monitoring noise levels non-mandatory informational appendix | Occupational Safety and Health Administration . (2019). Osha.gov. https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.95App Arsenic, cadmium, cobalt, copper, lead, and nickel (open vessel microwave digestion/ICP-MS Analysis) . (n.d.). Retrieved February 8, 2023, from https://www.osha.gov/sites/default/files/methods/osha- 1006.pdf ELEMENTS by ICP (Microwave Digestion) 7302 . (2014). https://www.cdc.gov/niosh/docs/2014-151/pdfs/methods/7302.pdf M., J. (2019, January 24). What are calibration weight classes? Scales Plus. https://www.scalesplus.com/blog/what-are-calibration-weight-classes/ NIOSH Manual of analytical methods (NMAM), 5 th ed . (2014). https://www.cdc.gov/niosh/docs/2003- 154/pdfs/5524.pdf Patafi, Muhammed Javid Iqbal, Mumtaz, Nazi, Saqulain, Ghulam. (2021). Occupational noise based hearing l oss: its frequency& risk factors. Pakistan Armed Forces Medical Journal. https://discovery-ebsco-com.libraryresources.columbiasouthern.edu/c/iuzu2i/viewer/pdf/tjjijuj5nj Sampling and analytical methods | Occupational Safety and Health Administration . (n.d.). Www.osha.gov. https://www.osha.gov/chemicaldata/sampling-analytical-methods Xylenes ethylbenzene RQL SEE RQL SEE (ppb) (µg/m 3 ) (%) (ppb) (µg/m 3 ) ( . (n.d.). https://www.osha.gov/sites/default/files/methods/osha1002.pdf

OSH 6302 Assignment 3

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