Articles
Hazard Identification Study (HAZID Study)
In the oil and gas industry, safe and reliable operations are the foundation of business continuity and stakeholder trust. As a leading Technical Safety Consultant, PRISM has been at the forefront of delivering structured and systematic HAZOP studies that help operators identify potential process deviations and implement robust safeguards before issues escalate. Our experience across onshore and offshore assets including gas processing facilities, refineries, and utility plants reinforces the importance of a disciplined, engineering-based approach to hazard identification.
The HAZOP study (Hazard and Operability Study) is one of the most powerful tools within process safety management. Conducted during the design or operational phase of a facility, a HAZOP systematically reviews process flow diagrams (PFDs) and piping and instrumentation diagrams(P&IDs) to uncover hidden risks. PRISM’s methodology aligns with IEC 61882 and CCPS (Center for Chemical Process Safety) guidance, ensuring that every study follows global best practices. Each HAZOP session begins with a clear definition of scope, objectives, and boundaries ensuring that all systems, from process units to utility streams, are comprehensively assessed. The study is typically facilitated by an experienced Safety Engineering Consultant supported by a multidisciplinary team including process, mechanical, instrumentation, and operations engineers. Using structured guidewords such as No Flow, More Pressure, Reverse Flow, and Contamination, the team explores potential causes, consequences, and existing safeguards for every credible deviation.
At PRISM, we believe that the effectiveness of a HAZOP study depends not only on methodology but also on engineering judgment and collaboration. Our facilitators draw from years of hands-on field experience to challenge assumptions, validate safeguards, and ensure that risk scenarios are practical and realistic. Beyond compliance, PRISM’s HAZOP approach integrates lessons from quantitative risk assessments (QRA), bow-tie analyses, and SIL verification to provide a holistic view of risk.
The outcome of a HAZOP is not just a list of recommendations—it is a roadmap for safer design and operation. Each finding is categorized according to risk level and assigned clear actions for closure. This structured workflow enhances traceability and accountability across engineering and operations teams. PRISM also leverages digital tools for efficient action tracking and integration with clients’ Management of Change (MOC) systems, ensuring that every recommendation translates into tangible safety improvement.
Our commitment extends beyond delivering studies—it lies in driving continuous safety enhancement. Over the years, PRISM has facilitated numerous HAZOP studies for complex brownfield modification projects, greenfield developments, and debottlenecking initiatives. In many cases, early HAZOP involvement helped eliminate costly design reworks and reduce operational risks by addressing critical design vulnerabilities upfront.
By combining deep technical expertise with a pragmatic understanding of operational realities, PRISM ensures that each HAZOP study serves as both a compliance requirement and a cornerstone of proactive risk management. Our systematic approach helps clients align with international safety standards, optimize plant performance, and safeguard personnel and the environment.
The HAZOP process is more than a procedural exercise—it is a culture of questioning, collaboration, and continuous improvement. As a trusted Technical Safety Consultant, PRISM remains committed to advancing process safety excellence by enabling clients to make informed, risk-based decisions. Our approach reflects the synergy between engineering precision, safety leadership, and operational reliability—key elements that define PRISM’s contribution to safer energy operations worldwide.
Center for Chemical Process Safety (CCPS). (2018). Guidelines for Hazard Evaluation Procedures (4th ed.). John Wiley & Sons.
International Electrotechnical Commission (IEC). (2016). IEC 61882: Hazard and Operability Studies (HAZOP Studies) — Application Guide.
Institution of Chemical Engineers (IChemE). (2015). HAZOP: Guide to Best Practice (3rd ed.). IChemE Publishing.
American Petroleum Institute (API). (2013). API RP 752: Management of Hazards Associated with Location of Process Plant Permanent Buildings.
International Organization for Standardization (ISO). (2018). ISO 17776: Petroleum and Natural Gas Industries — Offshore Production Installations — Major Accident Hazard Management During Design.
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