In the oil and gas industry, risk management is key to ensuring safety. Two vital methods for identifying and addressing risks are HAZOP (Hazard and Operability Study) and HAZID (Hazard Identification) While both focus on identifying hazards, their approach, scope, and timing differ.
Definitions
- HAZOP:
A systematic review used to identify potential process deviations and hazards. It focuses on detailed, guideword-based analysis to ensure safety and operability.
Example: Analyzing high pressure in a refinery’s distillation column to prevent explosions. - HAZID:
A broad, high-level hazard identification method used early in project development. It identifies potential risks and recommends initial control measures.
Example: Identifying oil spill risks in an offshore drilling project.
When to Use
- HAZOP:
Used during late design, construction, or operation to analyze specific process deviations in detail. It’s essential for complex systems requiring focused hazard mitigation. - HAZID:
Applied early in the project lifecycle, during concept or pre-design, to provide an overview of major hazards and inform early risk control decisions.
Key Differences
1.Approach:
- HAZOP: Detailed, structured analysis of process deviations.
- HAZID: Qualitative, high-level identification of major hazards.
2.Timing:
- HAZOP: Conducted during late design phases.
- Example: Analyzing high-pressure scenarios in a refinery’s distillation column during Detailed Engineering.
- HAZID: Performed early in project development.
- Example: Identifying major hazards like oil spills during the concept phase of an offshore drilling project.
3.Scope:
- HAZOP: Focuses on specific process systems.
- Example: Examining deviations in a gas processing plant, such as temperature fluctuations.
- HAZID: Covers overall project hazards.
- Example: Assessing broad risks for a new LNG terminal, including seismic threats.
4.Output:
- HAZOP: Produces a detailed report with identified deviations, causes, consequences, and recommended controls.
- Example: Listing excessive pump vibration as a deviation with maintenance recommendations.
- HAZID: Generates a high-level hazard register with initial risk assessments and control suggestions.
- Example: Documenting fire hazards during construction with recommendations for safety protocols.
Commonalities
- Goal: Both aim to enhance safety and operability by identifying hazards.
- Team-Based: Require input from multi-disciplinary teams of experts.
- Standards: Follow industry guidelines like IEC 61882 (HAZOP) and ISO 17776 (HAZID).
FAQ:
Hazop full form in safety
Hazard and Operability Analysis (HAZOP) is a structured and systematic technique for system examination and risk management.
Hazid full form in safety
Hazard Identification Study (HAZID) HAZID studies are systematic critical examinations of facilities to identify any potential hazards and the consequential effects on the facility as a whole. A HAZID will often address both process and non-process hazards.