Page: 1/6 This checklist recognizes the major accident hazards found by experience of previous HAZID studies. It is not intended to be totally exhaustive and feedback from users should be incorporated to maintain the most effective current working version. It will be tailored as appropriate for any particular HAZID. Key Word 1. Loss of Containment (in fluid systems) 2. Internal (i.e. non fluid systems) 3. External Hazard Hydrocarbon Well Fluid Hydrocarbon Gas Hydrocarbon Oil Water Chemicals Non-Hydrocarbon Gas (e.g. Nitrogen) Other - Consider un-ignited effects - Pollution - Sea surface hazards (ignited/toxic) Direct Fire Direct Explosion/Energy Release Structural Component Failure in Design Outside Design Condition leading to Structural Failure - Configuration/positioning - Buoyancy Mechanical Failure Human Factors - Access - Maintenance and Inspection - Intervention Third Party Contact - Dropped Objects - Vehicle Collision (Ship, ROV: Remotely Operated Vehicle, etc) - Sub-sea element clash (Chains, etc) - Diving Operations Extreme Environment Loads currents, seabed stability, high winds, storms Long Term Environmental Loads Marine Life Interaction
Page: 2/6 General in Onshore and Offshore Operations Use of chemicals Confined Spaces Working with pressure Working with electricity Ergonomics Excavation Work at height Hot works Lifting Mechanical work Working with radiation Transportation Working in remote location Working alone Working in extreme weather - Toxicity / Flammability / Corrosiveness / Explosion - Atmosphere unfit to breathe / Claustrophobia - Rupture of hose, or pipe / Explosion - Shock / Short circuit / Fire / Static / Loss of power - Strain / Human error - Collapse - Missing railing / Objects ready to fall - Fire / Heat / Explosion - Falling objects / Swinging objects - Sharp objects / Rotating equipment - Ionizing / Non ionizing - Road conditions / Vehicle conditions (road, sea, air) / Operator conditions - Distance to safety - Incapacity to call for help if wounded or unconscious - Snow / Ice / Rain / Wind / Heat
Page: 3/6 Specific hazards in Onshore and Offshore Operations Production Operations: Topside Production Facilities and Pipelines Equipment-related : Rotating equipment hazards Electrical equipment hazards Lifting equipment hazards Defective equipment Impact by foreign objects Process-related : High pressure liquids and gas Hydrocarbons under pressure Temperature (High or very low) Hydrocarbons and other flammable materials Toxic substances Storage of flammable or hazardous materials Internal erosion / corrosion Seal or contaminant failures Production upsets or deviations Vent and flare conditions Ignition sources Process control failures Operator error Safety system failures Pyrophoric materials Well-related : Pressure containment Unexpected fluid characteristics (sand, etc) Well-servicing activities Proximity of wells to other wells and facilities Environmental : Corrosive atmosphere Sea conditions Severe weather (storms, hurricanes, etc) Earthquakes or other natural disaster
Page: 4/6 Personnel Accommodation and catering External : Gas releases Fires Dropped objects Internal : Flammable materials / internal fires Toxic construction materials Inadequate escape routes and lifesaving equipment Emergency system failures Bacterial hazards Drinking water supply Food preparation and delivery Living conditions Waste disposal Security hazards Drilling / Work-over Operations Rig Operations: Well control Tubular handling Lifting operations Air and marine Transport: Vessel approach and docking or mooring procedures Sea and atmosphere conditions Severe weather Vessel failures Diving operations Materials Handling: Rig transfers Crane operations Storage of drilling equipment and supplies Chemical / flammable storage Radioactive sources Explosives
Page: 5/6 Construction and Maintenance Operations Marine Transport: Vessel traffic and mooring Sea conditions Vessel failures Diving operations Materials and Equipment Handling: Crane and lifting operations Elevated objects Storage of equipment and supplies Chemical / flammable storage Static electricity Radioactive sources Respiratory hazards (exhaust, chemicals, confined spaces, etc) Active stored energy sources (electrical and mechanical) Simultaneous Activities: Release of flammable hydrocarbons Hot work (Welding, grinding, cutting, etc) Proximity of other operations Ship Operations Internal, Onboard: Design limitations in structural capability Design limitation in static load distributions and stability Openings in water tight boundary Machinery hazards Cargo hazards Inventory of flammable materials Occupational health and safety hazards Poor ergonomic design of working environment and workplace Human and managerial errors External : Open Sea Transit Water and associated hazardous states Severe weather Icebergs Waterway Navigation: Other vessels sharing the same waterway Shallow water or underwater objects (wrecks, etc) Man-made obstacles (bridges, navigational buoys, piers, offshore structures, etc) Floating natural obstacles such as icebergs Port Operations: Tides, currents Mooring associated with cargo operations
Page: 6/6 Personnel Safety Inadequate personnel protective equipment Improper use of equipment Slipping and tripping hazards Working at heights Friction, sparks or flames Drugs and alcohol Exposure to weather Fatigue Housekeeping Living conditions (See Quarters above) Waste disposal