[논문]작업공정 및 활동에 따른 국내 작업장 납 노출특성 평가

이도희; 이나루

doi:10.15269/jksoeh.2023.33.1.19

[국내논문] 작업공정 및 활동에 따른 국내 작업장 납 노출특성 평가
Evaluation of Lead Exposure Characteristics by Process Category and Activity 원문보기

한국산업보건학회지 = Journal of Korean Society of Occupational and Environmental Hygiene, v.33 no.1, 2023년, pp.19 - 33

이도희 (한국산업안전보건공단 산업안전보건연구원) , 이나루 (한국산업안전보건공단 산업안전보건연구원)

Abstract ▼ AI-Helper

Objectives: The purpose of this study is to systematically identify situations where exposure levels are expected to be high by structuring domestic lead measurement data according to exposure processes and activities. Methods: Occupational exposure data on lead was collected from the results of the Evaluation of Reliability of Working Environment Measurement conducted by the government from 2019 to 2020. Lead exposure characteristics were analyzed by PROC (process category) and activity. The Risk Characterization Ratios (RCRs) of five PROCs according to ventilation type and lead content were evaluated using the MEASE (Metal's EASE) model. Results: The exposure data on lead (n=250) was classified into 12 PROCs and 12 activities, with an average concentration of 0.040 mg/m3 and about 14% exceeding the occupational exposure limit of 0.05 mg/m3. Processes with high exposure levels were PROC 7 (industrial spraying), 23 (open processing and transfer operations of molten metal), 24 (mechanical treatment), 25 (welding), and 26 (handling of powder containing lead). The results of evaluating RCR for the five PROCs were greater than 1 or close to 1 even if local exhaust ventilation was used. Conclusions: There is a possibility that the concentration of exposure is high in the casting and tapping of molten metal containing lead, mechanical treatment such as fracturing and abrasion, handling of powder, spraying, battery manufacturing, and waste battery recycling processes. It is necessary to implement chemical management policies for workplaces with such processes.

주제어

표/그림 (10)

표 Table 1. Data standardized by key information(PROC, Activity class)
표 Table 2. Input data for MEASE*
표 Table 3. Lead exposure level by Process category and Activity class
표 Table 4. Lead exposure level by Activity class for processes with high lead exposure levels (Unit : ㎎/㎥)
그림 Figure 1. Distribution of lead exposure concentrations in PROC 23 and 25 by types of lead
그림 Figure 2. Distribution of lead exposure concentrations in PROC 24 by the activity classes and types of lead
그림 Figure 3. Distribution of lead exposure concentrations in PROC 26 by activity classes
그림 Figure 4. RCR distribution of PROC 23-26 according to ventilation type and lead content using measurement and modeling data
그림 Figure 5. The result of simulation RCR of PROC 23-26 by applying the integrated LEV option
그림 Figure 6. RCR distribution of PROC 7 according to ventilation type and lead content using measurement and modeling data

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