This case study covers a Quantitative Risk Assessment (QRA) at a refinery in Mathura — this project’s second refinery QRA location alongside Jamnagar, built on the hazard scenarios identified in this batch’s companion HAZOP study at the same facility. As covered in this project’s Jamnagar refinery QRA content, refinery QRA requires modeling each process unit’s distinct hazard profile individually — crude distillation, catalytic cracking, reforming — before aggregating into a site-wide risk picture, given how much the consequence modeling for each unit type depends on that unit’s specific process chemistry and inventory. The assessment calculated risk contours across Mathura’s process units, comparing results against risk tolerability criteria to identify where risk-reduction investment would deliver the greatest safety improvement, following the same evidence-based prioritisation approach covered throughout this project’s QRA content. NCRB recorded 7,566 fire accidents in India in 2022, and refineries, regardless of specific location, carry disproportionate consequence severity given concentrated hydrocarbon inventory and process complexity relative to incident frequency. A QRA study for a refinery of this scale and complexity typically costs ₹15–35 lakh given the number of process units requiring individual modeling, consistent with the pricing established in this project’s other refinery QRA content. This case study covers what the QRA calculated across Mathura’s process units.
This HAZOP study at a Mathura refinery is this project’s second refinery location alongside Jamnagar, following the same node-by-node, unit-by-unit review methodology tailored to this facility’s own specific process configuration and crude slate.
Key Takeaways
- HAZOP review is a structured and systematic process used to identify potential hazards in a plant or process.
- The Mathura refinery is a major oil refinery located in India, with a capacity of 8.0 million metric tonnes per annum.
- Elion’s HAZOP review process involves a team of multidisciplinary experts analyzing the process and identifying potential deviations that could lead to hazards.
- Potential hazards identified in the refinery include fire, explosion, toxic release, and environmental impact.
- Risk assessment and mitigation strategies are developed to reduce the likelihood and severity of identified hazards, including engineering controls, administrative controls, and personal protective equipment.
- Implementation of recommendations from the HAZOP review is crucial for ensuring the safety and integrity of the refinery and its operations.
- In conclusion, ongoing safety measures and continuous improvement are essential for maintaining a safe working environment in the refinery.
Overview of the Refinery in Mathura
The Mathura Refinery, located in the state of Uttar Pradesh, India, is one of the largest oil refineries in the country. It is owned and operated by Indian Oil Corporation Limited (IOCL), a leading public sector oil and gas company in India. The refinery has a capacity of processing 8.0 million metric tonnes per annum (MMTPA) of crude oil and produces a wide range of petroleum products including gasoline, diesel, kerosene, LPG, and petrochemical feedstocks. The Mathura Refinery plays a crucial role in meeting the energy demands of the northern region of India and contributes significantly to the country’s energy security. Given the complex nature of its operations and the inherent risks associated with refining processes, ensuring the safety and reliability of the refinery is of paramount importance.
Elion’s HAZOP Review Process
Elion Engineering, a renowned engineering consultancy firm with expertise in process safety management, was commissioned to conduct a comprehensive HAZOP review of the Mathura Refinery. The HAZOP review process conducted by Elion involved a multidisciplinary team of experienced process engineers, safety professionals, and operations personnel. The review was conducted in accordance with international standards and best practices for process safety management, with a focus on identifying potential hazards, assessing risks, and developing effective mitigation strategies. The HAZOP review process followed a systematic approach, involving a series of structured meetings and workshops to systematically analyze the process design, equipment, instrumentation, and operational procedures.
The HAZOP review team utilized a combination of industry-specific knowledge, engineering expertise, and advanced analytical tools to systematically identify potential deviations from the intended design conditions that could lead to hazardous scenarios. The team also evaluated the operability aspects of the refinery processes to ensure that they were robust and reliable under normal operating conditions as well as during abnormal situations. The HAZOP review process was conducted with active participation from the refinery’s operations and maintenance personnel to ensure that their practical insights and experience were integrated into the review findings and recommendations.
Identification of Potential Hazards
During the HAZOP review of the Mathura Refinery, the Elion team identified several potential hazards associated with various process units and operational activities. These hazards ranged from equipment failures, process upsets, human errors, and external events such as fire, explosion, and toxic releases. The HAZOP study focused on critical process units such as crude distillation, catalytic reforming, hydrocracking, and product blending to ensure a comprehensive assessment of potential hazards across the refinery’s operations.
One of the key findings of the HAZOP review was the potential for overpressure scenarios in the crude distillation unit due to inadequate relief valve sizing and inadequate control measures. This posed a significant risk of equipment failure and potential release of hydrocarbons into the atmosphere. Additionally, the review identified potential fire hazards in the hydrocracking unit due to inadequate fire protection measures and insufficient isolation systems in case of a fire event. Furthermore, the HAZOP study highlighted potential risks associated with human factors such as operator errors during critical operations and maintenance activities.
Risk Assessment and Mitigation Strategies
Following the identification of potential hazards, the HAZOP review team conducted a detailed risk assessment to evaluate the severity and likelihood of each hazard scenario. This involved quantifying the potential consequences of each hazard in terms of personnel safety, environmental impact, asset damage, and business continuity. The risk assessment also considered the existing safeguards and control measures in place to mitigate these hazards.
Based on the risk assessment findings, the HAZOP review team developed a series of targeted mitigation strategies to address the identified hazards. These strategies included engineering controls such as improved relief valve sizing, enhanced fire protection systems, and improved isolation measures to prevent escalation of hazardous events. Additionally, operational controls such as enhanced operator training programs, procedural improvements, and enhanced maintenance practices were recommended to mitigate human error-related hazards.
The mitigation strategies were developed in close collaboration with the refinery’s operations and maintenance teams to ensure their practicality and feasibility for implementation. The HAZOP review team also conducted a cost-benefit analysis to evaluate the economic implications of implementing these mitigation measures and their potential impact on overall process safety performance.
Implementation of Recommendations
The implementation of recommendations from the HAZOP review was a critical phase in enhancing the safety and reliability of the Mathura Refinery. The refinery management worked closely with Elion Engineering to prioritize and implement the identified mitigation strategies in a phased manner. This involved allocating resources, defining clear responsibilities, and establishing a robust action plan to ensure timely implementation of the recommendations.
The implementation phase also involved conducting detailed engineering studies, procuring necessary equipment and materials, and coordinating with relevant stakeholders to ensure seamless integration of the mitigation measures into the existing refinery infrastructure. Furthermore, comprehensive training programs were conducted for the refinery’s operations and maintenance personnel to familiarize them with the new procedures, control systems, and operational practices.
The successful implementation of the HAZOP review recommendations resulted in tangible improvements in process safety performance at the Mathura Refinery. The refinery management also recognized the value of periodic HAZOP reviews as an essential tool for continuous improvement in process safety management.
Conclusion and Future Safety Measures
In conclusion, the HAZOP review conducted by Elion Engineering at the Mathura Refinery played a pivotal role in enhancing the safety and reliability of its operations. The systematic identification of potential hazards, rigorous risk assessment, and targeted mitigation strategies have significantly reduced the likelihood and severity of hazardous scenarios at the refinery. The collaborative approach between Elion Engineering and the refinery’s management and personnel ensured that the recommendations from the HAZOP review were effectively implemented and integrated into the refinery’s operational practices.
Looking ahead, it is imperative for the Mathura Refinery to continue its commitment to process safety management through regular HAZOP reviews, proactive risk assessments, and continuous improvement initiatives. Periodic reviews will help identify emerging hazards associated with changes in process conditions, equipment modifications, or operational practices. Furthermore, ongoing training programs for personnel, enhanced emergency response capabilities, and leveraging advanced technologies such as digitalization and predictive analytics will further strengthen the refinery’s safety culture and resilience against potential hazards.
In conclusion, while the HAZOP review has significantly improved safety at Mathura Refinery, it is essential for them to continue investing in safety measures to ensure ongoing protection for their employees and surrounding communities.
If you are interested in learning more about safety reviews and audits, you may want to check out Elion’s safety training programs. They offer a variety of courses to help individuals and organizations improve their safety practices. You can find more information about their safety training programs here. Additionally, if you are looking for professional safety audit services, Elion also offers safety audit services in Jaipur. You can learn more about their safety audit services here. Know more about – Elion did successfully Electrical Safety Audit and EHAZOP,SAFOP STUDY for OIL extraction unit at Barmer Rajasthan
FAQs
Q1: How much does this HAZOP study cost?
The cost of a refinery HAZOP study depends on the number and complexity of process units, P&IDs and PFDs, number of HAZOP nodes, multidisciplinary workshop duration, documentation review, and reporting scope. For a refinery as complex as the Jamnagar facility, the scope is substantially larger than a single-process plant. A project-specific quotation is therefore more appropriate than a fixed price. Elion describes the Jamnagar HAZOP as a comprehensive study covering the refinery’s processes and operations.
Q2: How does this compare to Elion’s Jamnagar refinery HAZOP?
If this refers to another refinery HAZOP case study, the core methodology is similar: multidisciplinary review, examination of process design and operating procedures, node-by-node analysis, guideword application, identification of deviations, consequences and safeguards, followed by recommendations. The difference is primarily in the specific process units and operating conditions covered by each engagement. Elion’s Jamnagar case specifically describes review of process design, P&IDs, PFDs, equipment specifications and operating procedures.
Q3: How does this relate to Elion’s QRA at the same facility?
The HAZOP and Quantitative Risk Assessment (QRA) are complementary. HAZOP identifies process deviations, causes, consequences and safeguards, while QRA quantitatively assesses credible hazardous scenarios using frequency and consequence analysis. Elion has separately documented a QRA at an oil refinery in Jamnagar, describing data collection, risk analysis and scenario modelling.
Q4: What process units were reviewed?
Elion’s Jamnagar HAZOP case study states that the review covered crude oil processing, refining processes, storage and handling of hazardous materials, utilities, and emergency response procedures. The broader methodology involved systematically reviewing each process unit and considering deviations using guidewords such as “no,” “more,” “less,” “as well as,” “reverse,” “other than,” and “part of.”
Q5: What did this study identify?
The study identified potential hazards and operability issues involving equipment failures, process upsets, human errors, and external events such as fires, explosions and natural disasters. The findings also highlighted opportunities for improved equipment maintenance, operator training, emergency response procedures and safety-system upgrades.