Layer of Protection Analysis (LOPA)/Safety Integrity Level (SIL)

LOPA Facilitation and Documentation

We support effective risk management by guiding Layer of Protection Analysis (LOPA) sessions and delivering structured outputs that inform safety decisions.
 
Our services include:
 

• Facilitation of LOPA workshops with cross-disciplinary teams to evaluate risk scenarios
• Documentation of initiating events, independent protection layers (IPLs), and risk reduction targets
• Support in determining tolerable risk levels and identifying gaps in safeguards
• Integration of LOPA findings into broader safety studies, including SIL determination and HAZOP reviews

 
Our approach ensures LOPA outputs are clear, traceable, and aligned with regulatory expectations—helping clients prioritise controls and strengthen process safety.

SIL Determination Studies Using Risk Graphs and LOPA

We conduct Safety Integrity Level (SIL) assessments to define the reliability requirements of Safety Instrumented Functions (SIFs) based on risk reduction needs.

 
Our approach includes:

 

• Use of calibrated risk graphs to evaluate consequence severity and likelihood
• Application of Layer of Protection Analysis (LOPA) to assess independent safeguards
• Determination of appropriate SIL ratings to guide system design and performance targets
• Alignment with IEC 61511 to ensure functional safety compliance

 
Our structured methodology supports robust decision-making and helps clients design systems that prevent high-consequence events.

Hazard Scenario Definition and Risk Gap Analysis

We support effective risk management by identifying credible hazard scenarios and evaluating the adequacy of existing safeguards.
 
Our services include:
 

• Definition of realistic and regulatory-relevant hazard scenarios
• Assessment of current safeguards against required risk reduction targets
• Identification of risk gaps and prioritisation of mitigation measures
• Integration of findings into broader safety studies and compliance frameworks

 
This approach ensures your risk evaluations are defensible, targeted, and aligned with industry standards.

Integration with HAZOP, COMAH and Safety Lifecycle

We ensure safety studies are fully aligned with key regulatory and operational frameworks to support consistent, compliant decision-making.
 
Our services include:
 

• Integration of HAZOP outputs into downstream safety assessments and documentation
• Alignment with COMAH (Control of Major Accident Hazards) reporting requirements
• Support across the full functional safety lifecycle, from concept to decommissioning
• Consistent traceability of risk decisions and safety functions across all stages

 
This holistic approach strengthens regulatory compliance and ensures safety is embedded throughout project delivery.

Support for SIF Design and Verification (via Trusted Partners)

We collaborate with trusted engineering partners to ensure Safety Instrumented Functions (SIFs) are designed and verified in line with SIL targets and industry standards.
 
Our support includes:

 
• Coordination with qualified partners for SIF design and technical validation
• Alignment of SIFs with defined SIL ratings and functional safety requirements
• Verification of system architecture, reliability data, and performance criteria

 
This partnership-driven approach ensures robust, compliant safety systems tailored to your project’s risk profile.

Planning-Ready Reporting and Regulator Engagement

We produce clear, planning-ready reports and support engagement with regulators to demonstrate risk reduction, compliance and safety assurance.