[논문]타일 제조 작업자의 결정형 유리규산 노출평가 사례

차원석; 김은영; 김대호

doi:10.15269/jksoeh.2023.33.3.291

타일 제조 작업자의 결정형 유리규산 노출평가 사례
Exposure Assessment of Tile Manufacturing Workers to Crystalline Silica 원문보기

한국산업보건학회지 = Journal of Korean Society of Occupational and Environmental Hygiene, v.33 no.3, 2023년, pp.291 - 297

차원석 (근로복지공단 직업환경연구원) , 김은영 (근로복지공단 직업환경연구원) , 김대호 (근로복지공단 직업환경연구원)

Abstract ▼ AI-Helper

Objectives: An epidemiological investigation was requested for a worker who developed COPD and IPF after long-term molding and firing at a domestic tile manufacturing site. We would like to share the results of the exposure assessment and the estimation of past work. Methods: The content of crystalline silica in four raw materials was analyzed, and the respirable fraction of crystalline silica and dust generated in the air from molding and firing workers and other processes were measured. The measurement and analysis method referred to the NIOSH method. Results: The crystalline silica content of the raw material was 24~47%. The concentration of crystalline silica in the molding and firing process workers and the surrounding area was at the level of the exposure standards set by the Ministry of Employment and Labor and ACGIH, and the respirable and total dust exposure levels were generally low. The crystalline silica concentration of the area samples measured to estimate past work was about twice as high as the exposure standard of the Ministry of Employment and Labor (0.05 mg/m3), and the exposure levels of respirable dust were also quite high at 0.903 and 1.332 mg/m3. Conclusions: It was confirmed that tile molding and firing workers are currently exposed to a fairly high level of crystalline silica, and a high level is also confirmed in area samples to estimate past work. In the past, it is judged that the level of exposure would have been much higher due to differences in production volume, working method, presence/absence of local ventilation facilities, and process layout. When working in such a working environment for a long time, respiratory diseases such as lung cancer, COPD, and IPF can occur.

주제어

표/그림 (6)

그림 Figure 1. Tile manufacturing process
그림 Figure 2. Press molding & Firing process
그림 Figure 3. Current process layout
그림 Figure 4. Past process layout
표 Table 1. Crystalline silica concentrations in a tile manufacturing plant (Unit : ㎎/㎥)
표 Table 2. Respirable dust & Total dust concentrations in a tile manufacturing plant (Unit : ㎎/㎥)

참고문헌 (9)

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