Risk Assessment Services: HAZOP, QRA and Bow-Tie Studies

Risk Assessment Services – Trusted Globally

At Ujjwal Engineers and Environmental Services (UEES), we provide the best risk assessment services in India and worldwide to help industries achieve operational safety, regulatory compliance, and excellence. Our expertise spans petrochemicals, oil & gas, refineries, power plants, pharmaceuticals, automotive, and manufacturing industries.

With a strong presence across Mumbai, Gujarat, Pune, Hyderabad, Chennai, and international locations including Qatar, UAE, Saudi Arabia, Oman, Bahrain, Malaysia, Indonesia, Thailand, Singapore, and the United Kingdom, UEES is recognized as one of the top safety consultants in India and globally.

We deliver tailored risk assessment solutions for hazard identification, risk evaluation, and accident prevention, ensuring your industrial operations are safe, compliant, and efficient.

Why Choose UEES for Risk Assessment?

  • Trusted Safety Consultants Across India & Globally: Recognized among the top risk assessment companies in India and the Middle East, serving high-risk industries with precision and reliability.
  • Expertise in Multiple Industries: From petrochemical plants and refineries to pharmaceutical hubs, automotive industries, and engineering facilities, our experts understand the unique safety challenges of each sector.
  • Compliance with Global & Indian Safety Standards: We ensure full adherence to IEC, ISO, CCPS, OSHA, and MoEF&CC standards, providing world-class safety solutions.

HAZOP Study

A HAZOP (Hazard and Operability study) is a structured, qualitative examination of a process carried out systematically against the P&IDs. The plant is divided into nodes, and the team applies guide words - no, more, less, reverse, as well as - to process parameters to generate credible deviations from design intent. For each deviation the team records causes, consequences, existing safeguards and recommendations. The methodology follows IEC 61882.

A HAZOP is only as good as the team around the table. Ours are run by an independent facilitator with a dedicated scribe, and require process, operations, instrumentation and maintenance representation.

Quantitative Risk Assessment (QRA)

Where HAZOP is descriptive, QRA is numerical. It combines consequence modelling - pool fires, jet fires, flash fires, vapour cloud explosions and toxic dispersion - with frequency analysis, and expresses the result as individual risk contours and societal risk. QRA is what answers questions about siting, separation distances and risk to neighbouring populations.

MAH Analysis

Major Accident Hazard (MAH) analysis addresses the scenarios with the potential for serious offsite consequences. For sites handling hazardous chemicals above threshold quantities, requirements under the Manufacture, Storage and Import of Hazardous Chemical Rules, 1989 and the Factories Act, 1948 make a documented understanding of these hazards a regulatory expectation as well as a safety one.

Bow-Tie Analysis

Bow-Tie analysis puts a whole hazard scenario on a single diagram: threats on the left, consequences on the right, and the preventive and mitigative barriers in between. Its practical value is that every barrier can be given an owner and a performance standard, which turns process safety into something maintenance can actually track.

Which study does your plant need?

  • New unit or major modification - HAZOP first, then SIL determination for the safety functions it identifies
  • Siting, layout or land use decisions - QRA
  • MAH installation - both, plus MAH analysis
  • Communicating risk to management or a regulator - Bow-Tie

Related reading

Quantitative Risk Assessment (QRA) Study

1.1 Quantitative Risk Assessment (QRA) Study

As one of the top QRA services in India & globally, UEES is trusted by petrochemical and chemical industries across Gujarat, Maharashtra (Mumbai, Thane, Nagpur), Tamil Nadu, and Odisha. Our safety consultancy reach extends to high-stakes industrial zones in Qatar, UAE, Saudi Arabia, Oman, Malaysia, Indonesia, and Singapore.

We specialize in quantifying risks to personnel, the environment, and high-value assets. Our data-driven approach ensures your operations bridge the gap between local statutory requirements and international safety excellence.

  • Comprehensive Scope: We provide the best risk assessment and detailed modeling for Cross-Country Pipelines, CGD Networks, LPG/LNG Tank Farms, and API Pharmaceutical manufacturing.
  • Technical Methodology: Our TÜV certified facilitators utilize advanced simulation tools to calculate Individual Risk (IR) and Societal Risk (SR), delivering precise F-N Curves and Risk Contours.
  • Global Benchmarks: We ensure full compliance with PNGRB Guidelines, MSIHC Rules, and international standards like CCPS and UK HSE frameworks.
Consequence Analysis - risk assessment study - HAZOP and QRA

1.2 Consequence Analysis

As leading consequence analysis consultants, we focus on identifying and modeling the physical effects of hazardous events. We empower industries in Jamnagar, Chennai, and Hyderabad to minimize operational risks and ensure total environmental compliance through high-fidelity simulations.

  • Hazard Identification Expertise: We provide best-in-class modeling for Toxic & Flammable Gas Releases, Pool/Jet Fires, VCE & BLEVE blast overpressure, and Chemical Spill impacts.

  • The UEES Technical Edge: We utilize industry-standard software like PHAST or ALOHA to provide precise thermal radiation contours and toxic gas footprinting.
Dispersion Analysis - risk assessment study - HAZOP and QRA

1.3 Dispersion Modelling Study

We conduct advanced dispersion modelling to accurately predict the atmospheric spread of toxic gases, flammable vapors, and smoke. Recognized as a top dispersion modelling service provider, we help businesses across India and the Middle East mitigate hazards and ensure absolute environmental compliance.

  • Global Footprint: Serving high-hazard zones in Doha, Dubai, Riyadh, Muscat, Kuala Lumpur, and Singapore, as well as the industrial belts of Bharuch and Dahej.

  • Critical Outcomes: Our studies are vital for Land Use Planning (LUP) and securing Environmental Clearances (EC) via the ParivesH portal.

  • Technical Capabilities: We deliver Stack Emission & Plume Rise studies (CPCB/MPCB norms) and Sensitivity Analysis under varying meteorological conditions.
Fire & Explosion Risk Analysis

1.4 Fire & Explosion Risk Analysis (FERA) Study

Our FERA study services are essential for refineries and heavy manufacturing plants. As top FERA consultants, we provide actionable insights to optimize fire protection systems and facility layouts in Navi Mumbai, Bharuch, and Mangalore.

  • Risk Mitigation Scope: Our TÜV certified facilitators conduct deep-dive assessments into Thermal Radiation Contours, Blast-Resistant Module (BRM) placement, and Firewater/Suppression system optimization.

  • Strategic Safety Design: We specialize in Escalation (Domino Effect) Analysis, evaluating the potential for primary failures to trigger secondary disasters.

  • Compliance Excellence: Every study meets NFPA standards and OISD guidelines, ensuring your facility is protected by world-class safety benchmarks.
Flare Radiation Study - risk assessment study - HAZOP and QRA

1.5 Flare Radiation Study

UEES is a leading flare radiation study provider for refineries and gas processing plants. We minimize the impact of radiation, heat, and noise in Gujarat (Hazira), Odisha (Paradeep), and Maharashtra, as well as international energy hubs.

  • Technical Precision: We calculate peak radiation intensities to determine safe sterile zones and model noise propagation to ensure compliance with occupational health limits.

  • Engineering Value: We provide radiation isopleth maps (contours) that allow for safer plant layouts and fulfill MPCB/CPCB/OISD requirements.

  • Industry Expertise: Trusted by top-tier Upstream and Downstream firms for high-fidelity modeling and MoEF&CC regulatory support.

3D F&G Mapping - risk assessment study - HAZOP and QRA

1.6 3D Fire & Gas Mapping

We offer world-class 3D Fire & Gas Mapping for the oil & gas and chemical sectors. As a top 3D F&G mapping service provider, we eliminate "blind spots" and optimize detector placement in high-risk environments.

  • Advanced Objectives: We conduct Detector Coverage Analysis aligned with ISA TR 84.00.07, designing robust 2oo3 or 1oo2 voter logic architectures.

  • Cost Optimization: Our studies reduce CAPEX by strategically placing the minimum number of detectors required for 100% target coverage.

  • Audit Readiness: These mapping studies are essential for Safety Integrity Level (SIL) verification and global insurance requirements.

Escape, Evacuation & Rescue

1.7 Escape, Evacuation & Rescue Analysis (EERA) Study

Our EERA studies ensure the highest level of personnel safety. Recognized as a leading EERA provider, we develop customized emergency solutions for Pharmaceutical and Automotive plants in Andhra Pradesh and Maharashtra.

  • Life Safety Scope: We specialize in Escape Route Analysis, Evacuation Time Studies (ASET vs. RSET), and Temporary Refuge (TR) Integrity assessments.

  • Critical Infrastructure: We optimize Life-Saving Appliances (LSA), including the placement of lifeboats and EEBA/EEBD equipment.

  • Standard Alignment: Our work ensures adherence to NFPA 101 (Life Safety Code) and OSHA standards.

ALARP Study - risk assessment study - HAZOP and QRA

1.8 ALARP Studies

At UEES, we conduct ALARP studies to provide documented proof that risks have been reduced to As Low As Reasonably Practicable. As a top ALARP consultant, we serve hubs in Pune, Hyderabad, and Bengaluru.

  • Methodology: Our approach includes Cost-Benefit Analysis (CBA), Engineering Judgment, and LOPA (Layer of Protection Analysis).

  • Regulatory Value: We provide the final technical justification required for Environmental Clearances and high-level safety audits.

  • Strategic Safety: We ensure safety investments are targeted and effective, preventing over-engineering while maintaining absolute compliance.

Our ALARP studies are often the final requirement for successfully closing a HAZOP or SIL loop.

Computational Fluid Dynamics (CFD) Services

1.9 Computational Fluid Dynamics (CFD) Services

Our CFD services provide predictive, high-fidelity consequence analysis for complex industrial scenarios where standard modeling reaches its limits. Recognized as a leading CFD services provider in India and globally, we use advanced fluid dynamics to simulate real-world physics in refineries, offshore platforms, and confined process areas.

  • Gas & Toxic Dispersion Modeling: We provide accurate 3D simulations of flammable and toxic gas releases under real-world terrain conditions, ensuring optimal gas detector placement in congested environments.
  • Fire & Thermal Radiation Analysis: Our models predict the impact of jet, pool, and flash fires to determine safe standoff distances and evaluate the effectiveness of Passive Fire Protection (PFP) measures.
  • Explosion (VCE) Modeling: We calculate blast overpressures in confined areas to inform structural design for safety and ensure the integrity of critical buildings and blast walls.
  • Technical Advantage: Our TÜV certified facilitators deliver precise data on smoke movement and heat exhaust (SHEV), providing a superior risk profile for high-stakes facilities in Maharashtra, Gujarat, and the Middle East.

Recognized as a leading CFD services provider in India and globally.

risk assessment study - HAZOP and QRA

1.10 Other Safety Desktop Studies

Our desktop studies cover Safety Audits, Energy Audits, Human Factors & Ergonomics Studies, Process Safety Reviews, Hazardous Area Classification, and more. UEES also performs Constructability Studies, Chemical Exposure Assessments, Dust Hazard Analysis (DHA), Ergonomic Risk Assessments, and Emergency Response Planning to ensure compliance and safety in high-risk operations. Top-rated safety desktop study services in India & worldwide.

  • Emergency Response Planning (ERP): Developing robust, site-specific strategies for disaster management and crisis control.

  • Process Safety Reviews (PSR): Providing high-level technical oversight for existing assets or new project designs.

  • Ergonomic Risk Assessments: Designing workstations and tasks to prevent musculoskeletal disorders and enhance productivity.

Regulatory Mastery: Every study is designed to meet the stringent requirements of DISH (Directorate of Industrial Safety and Health), MPCB, and international OSHA/NFPA benchmarks.

Global Recognition

UEES is recognized as a leading safety consultant in India and worldwide, trusted in India, Qatar, UAE, Saudi Arabia, Oman, Bahrain, Malaysia, Indonesia, Thailand, Singapore, and the United Kingdom.

We are the top choice for industries seeking comprehensive, reliable, and globally compliant safety services.

Get the Best Risk Assessment & Safety Services in India & Globally!

Ensure your industrial operations are safe, compliant, and efficient with UEES, one of the top safety consultants in Mumbai, Pune, Chennai, Hyderabad, Gujarat, and international locations including Qatar, UAE, Saudi Arabia, Oman, Malaysia, Singapore, and the UK.

Contact UEES today for customized risk assessment, QRA, FERA, CFD, ALARP, and other advanced safety services to protect your workforce, assets, and environment while meeting Indian and global safety standards.

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industries

Industries We Serve

Serving a wide range of industries with reliable environmental, safety, and engineering solutions tailored to regulatory and operational needs.

Petrochemical

Oil & Gas

Chemical

Pharmaceutical

Refineries

Power Plants

Building & Construction

Mines & Washeries

Fertilizers

Automotive

Manufacturing

Engineering & Heavy Industries

process

What is Our Process?

Understanding client requirements - first stage of our consulting process

Understanding Requirements

We begin by analyzing client needs, project scope, and regulatory obligations to ensure clarity from the start.

Planning and scoping stage of our environmental consulting process

Site Assessment & Planning

Our experts conduct detailed assessments and create practical, compliant plans tailored to the project requirements.

Execution and compliance stage of our environmental consulting process

Execution & Compliance

We implement solutions efficiently while ensuring adherence to environmental, safety, and statutory regulations.

Review and ongoing support stage of our environmental consulting process

Review & Ongoing Support

We monitor outcomes, provide documentation, and offer continuous support to maintain long-term compliance and performance.

As per MOEF & CC’s (Govt. of India) Office Memorandum F. No. 22-34/2018-IA.III dated 9th August 2018 Self-Environmental Audit shall be conducted annually. Every three years third party environmental Audit shall be carried out.
As per MOEF & CC’s (Govt. of India) Office Memorandum F. No. 22-34/2018-IA.III dated 9th August 2018 Self-Environmental Audit shall be conducted annually. Every three years third party environmental Audit shall be carried out.
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