Investigation Report
Environmental Enterprises Hydrogen Sulfide Release — Environmental Enterprises Case Study
Environmental Enterprises Hydrogen Sulfide Release — Environmental Enterprises Case Study
- CSB
- Investigation Report
- Hydrogen sulphideLoss of containmentProcess safety
- Gas detector
- Competence and trainingOperating and work proceduresPreventive maintenanceSafety communication
- Onshore facility
Summary
This case study examines a hydrogen sulphide exposure during hazardous-waste treatment in Cincinnati. Sodium sulphide and polyaluminium chloride reacted in an open clarifier with inadequate air mixing, injuring one employee. It analyses operating instructions, training, hazard communication, detector maintenance and management oversight, and describes subsequent improvements.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Loss of containment; containment loss.
Classifications: Process safety; major accident hazards.
Classifications: Gas detector; gas monitor; gas detection instrument.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Operating and work procedures.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Onshore facility; onshore plant.