What is a LOPA Study?

A LOPA Study, or Layer of Protection Analysis, is a structured risk assessment method used to determine whether existing safeguards are sufficient to reduce process safety risks.

How is LOPA related to SIL?

LOPA can support Safety Integrity Level decisions by identifying whether additional risk reduction is required from a Safety Instrumented Function.

When should LOPA be conducted?

LOPA is usually conducted after HAZOP, HAZID, or other hazard studies when selected scenarios require deeper risk assessment.

What is an Independent Protection Layer?

An Independent Protection Layer is a safeguard that can prevent or reduce the consequence of a hazardous event and operates independently from the initiating cause and other protection layers.

Can LOPA workshops be conducted remotely?

Yes. LOPA workshops can be conducted physically or virtually depending on project requirements and stakeholder availability.

LOPA Study Consultant

Evaluate protection layers and strengthen risk reduction decisions.

10-Year Active Term Contract with Shell (Sabah/Sarawak) | CIDB G4.

The PISB Approach

Your team makes better process safety decisions with structured risk assessment, safeguard evaluation & clear action tracking.

Layer Of Protection Analysis For Safer
Risk-Based Decisions

A LOPA Study, or Layer of Protection Analysis, helps organisations determine whether existing safeguards are sufficient to reduce process safety risks to an acceptable level.

Pure Integrity provides structured LOPA Study Consultant services to support high-risk facilities in evaluating hazardous scenarios, reviewing independent protection layers & identifying where additional risk reduction measures may be required.

This helps clients make clearer decisions on safeguards, Safety Instrumented Functions, risk reduction actions & process safety improvements.

The Process

How We Assess Protection
Layers & Risk Reduction Requirements

Pure Integrity begins by reviewing selected hazardous scenarios, initiating events, process conditions, consequence levels & existing safeguards identified from HAZOP, HAZID, or other process safety studies.

We then assess the effectiveness & independence of each protection layer, evaluate the remaining risk & develop practical recommendations where additional safeguards, procedural controls, or Safety Instrumented Functions may be required.

Problem We Solve

Unclear Safeguard Effectiveness

We help determine whether existing safeguards are sufficient to manage identified process safety risks.

Gaps After HAZOP Studies

We support further risk assessment for scenarios that require deeper evaluation after HAZOP or HAZID.

Inconsistent Risk Reduction Decisions

We provide a structured method to evaluate protection layers and justify risk reduction requirements.

Over-Reliance On Existing Controls

We assess whether safeguards are truly independent, effective, and suitable for the scenario.

Unclear SIL Requirements

We help provide input for Safety Integrity Level decisions where additional risk reduction may be required.

Weak Risk Documentation

We provide clear LOPA records to support audit, assurance, and management decision-making.

Benefits

LOPA helps organisations make defensible risk-based decisions & strengthen protection against major accident scenarios.

Evaluates the effectiveness of independent protection layers

Identifies gaps in existing safeguards and risk controls

Supports SIL determination and functional safety decisions

Improves consistency in process safety risk assessment

Helps prioritise practical risk reduction actions

Supports regulatory, audit & assurance expectations

Strengthens major accident hazard management

Why Us?

Pure Integrity provides structured, practical & standards-driven LOPA facilitation for hazardous process facilities & safety-critical operations.

Structured Risk Assessment Approach

We guide teams through a clear and consistent LOPA process for selected hazardous scenarios.

Strong Process Safety Understanding

We understand major accident hazards, protection layers, safeguard effectiveness & risk reduction requirements.

Integration With HAZOP And SIL

We support LOPA as part of wider HAZOP, SIL classification, functional safety, and process safety programmes.

Practical, Implementable Recommendations

Our outputs are focused on actions that can be understood, tracked & implemented by client teams.

Multidisciplinary Workshop Facilitation

We facilitate discussions with process, operations, maintenance, instrumentation, technical safety & engineering stakeholders.

Deliverables

LOPA study report

Scenario and initiating event register

Independent Protection Layer assessment

Residual risk evaluation

Risk gap summary

Recommended safeguard improvements

SIL / SIF input recommendations, where applicable

Action tracking log and close-out support

Johan Andak

Managing Director
Pure Integrity Sdn Bhd

Johan Andak is a process safety and operations specialist with decades of experience in the oil and gas, petrochemical, and energy sectors. As Managing Director of Pure Integrity, he provides strategic and technical leadership in process safety, functional safety, and risk assessment, supporting major projects across Southeast Asia, the North Sea, West Africa, Brazil, and Australasia.

Education & Certificate

FAQ

What is a LOPA Study?
A LOPA Study, or Layer of Protection Analysis, is a structured risk assessment method used to determine whether existing safeguards are sufficient to reduce process safety risks.
How is LOPA related to SIL?
LOPA can support Safety Integrity Level decisions by identifying whether additional risk reduction is required from a Safety Instrumented Function.
When should LOPA be conducted?
LOPA is usually conducted after HAZOP, HAZID, or other hazard studies when selected scenarios require deeper risk assessment.
Who should attend a LOPA workshop?
Typical participants include process, operations, maintenance, instrumentation, technical safety, engineering, and asset owner representatives.
What is an Independent Protection Layer?
An Independent Protection Layer is a safeguard that can prevent or reduce the consequence of a hazardous event and operates independently from the initiating cause and other protection layers.
Can LOPA workshops be conducted remotely?
Yes. LOPA workshops can be conducted physically or virtually depending on project requirements and stakeholder availability.

Who We Work With

We have worked closely with many local and multi-national companies in Malaysia as well as overseas to fulfill their specific needs. Through close collaboration we have helped clients deliver safer, more reliable, and cost effective operations.