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Figure D3.1 Hazards and Effect Prevention, Control and Mitigation


 Hazard Event (Conditions leading to major
 No  Threat, Cause or Initiating Event  Effect / Consequence  Preventive Measures  Control / Mitigations
 accident)
 1  Dropped or damaged drum, causing   Mishandling of drum during loading   Chlorine gas dispersion (loss of  Technical:  Emergency Scrubber System
 rupture of weakened drum joint weldment /  and unloading from truck  containment)  1. Inherently safe design of chlorine   Emergency Response Plan
 shelf           plant
 Mishandling of drum during replacing   2. Overhead crane (with valid PMA)
 duty / standby drum  3. Gas detector and alarm system

                 Non-Technical:
                 1. Safe work practice
                 2. Emergency drill
                 3. Trained Personnel
                 4. Signages-hazardous material
                 5. PPE
 2  Dropped or damaged drum valve, causing  Mishandling of drum during loading   Chlorine gas dispersion (loss of  Technical:  Emergency Scrubber System
 failure of valve  and unloading from truck  containment)  1. Inherently safe design of chlorine   Emergency Response Plan
                 plant
 Mishandling of drum during replacing   2. Overhead crane (with valid PMA)
 duty / standby drum  3. Gas detector and alarm system

                 Non-Technical:
                 1. Safe work practice
                 2. Emergency drill
                 3. Trained Personnel
                 4. Signages-hazardous material
                 5. PPE
 3  Corrosion and pitting of drum shelf or   Improper and inadequate   Chlorine gas dispersion (loss of  Technical:  Emergency Scrubber System
 valve   qualification inspection and testing of  containment)  1. Inherently safe design of chlorine   Emergency Response Plan
 drum            plant
                 2. Gas detector and alarm system
                 Non-Technical:
                 Authorised Drum Manufacturer
                 Trained maintenance personnel
                 Regular inspection
                 Maintenance Plan
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