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Table 3 Eight-hour time-weighted average exposure level assessment for HCFC-123

From: HCFC-123-induced toxic hepatitis and death at a Korean fire extinguisher manufacturing facility: a case series

Worker Raw material pumping Automatic charge line   Exposure standard
  Exposure concentration Time measured Exposure concentration Time measured TWA  
  (ppm) (min) (ppm) (min) (ppm)  
1 20.7 73 91.6 89 20.1 50 ppm (AIHA) 10 ppm (JSOH)
2a 115.6 87 20.9
3 71.8 131 19.6
4 69.5 132 19.1
  1. AIHA American Industrial Hygiene Association, JSOH Japan Society for Occupational Health, TWA time-weighted average
  2. aA hyphen means that it was not measured