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IE 419 Work Design: Productivity and Safety Dr. Andris Freivalds Class #37

IE 419 Work Design: Productivity and Safety Dr. Andris Freivalds Class #37. Confined Space (Ch. 26). OSHA 1910.146 Large enough to enter Not continuous Restricted entry/exit. Permit Required Confined Space. Flammable gas: > 10%LFL Dust > LFL Oxygen: < 19.5% or >23.5%

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IE 419 Work Design: Productivity and Safety Dr. Andris Freivalds Class #37

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  1. IE 419 Work Design:Productivity and Safety Dr. Andris Freivalds Class #37 IE 419

  2. Confined Space (Ch. 26) • OSHA 1910.146 • Large enough to enter • Not continuous • Restricted entry/exit IE 419

  3. Permit Required Confined Space • Flammable gas: > 10%LFL • Dust > LFL • Oxygen: < 19.5% or >23.5% • Toxic gas/substance: > PEL • Anything that is immediately dangerous • Categories: • Class A: immediately dangerous • Class B: dangerous but not immediate • Class C: potential hazard IE 419

  4. Hazards • Atmospheric • Physical • Chemical • Biological IE 419

  5. Control • Identification • Procedures • Permit system • Training IE 419

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  8. Example – Sewer Entry • Potential Hazards • Engulfment (drowning) • Toxic gases (e.g. > 10 ppm H2S) • Explosive/flammable gases(> 10% LFL) • Oxygen deficiency (< 19.5%) IE 419

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