What Are the Most Common Gaps Found During Process Safety Audits?

Process safety audits are a critical part of maintaining safe and compliant operations in high-risk industries. They provide an opportunity to review how effectively hazards are identified, risks are assessed, and control measures are implemented.

However, audits often reveal recurring gaps. These are not always the result of negligence, but more often due to complexity, evolving operations, or disconnects between design and day-to-day practice.

Understanding the most common gaps found during process safety audits can help organisations address weaknesses early, strengthen their systems, and reduce the likelihood of incidents.

Incomplete Hazard Identification

One of the most frequent issues identified during audits is incomplete hazard identification.

Hazard identification is the foundation of process safety. If hazards are not fully recognised, the risk assessment that follows will not accurately reflect the true level of risk. This can result in inadequate safeguards or misplaced priorities.

In many cases, hazard identification has been carried out at an early stage of a project but has not been revisited as processes evolve. Changes in equipment, materials, or operating conditions can introduce new hazards that are not captured in existing studies.

Regular reviews, including structured techniques such as HAZOP, are essential to ensure that hazard identification remains current and aligned with actual operations.

Weak or Outdated Risk Assessments

Another common gap is the presence of outdated or poorly defined risk assessments.

Risk assessments are often completed during project development but are not consistently updated as systems change. Over time, this can lead to a disconnect between documented risks and real-world conditions.

In some cases, risk assessments may lack sufficient detail. Generic assessments that do not reflect specific processes can result in controls that are not appropriate or effective.

This is particularly important in areas such as COSHH assessments and major accident hazard risk assessment, where understanding the specific nature of materials and processes is essential.

Maintaining accurate and relevant risk assessments requires ongoing review, especially following modifications, incidents, or operational changes.

Gaps in Safety Critical Task Analysis

Safety Critical Task Analysis is often overlooked or not fully developed.

Many safety systems rely on human intervention. Operators are required to respond to alarms, follow procedures, and carry out tasks that prevent incidents from escalating. If these tasks are not clearly defined and understood, the effectiveness of the overall safety system is reduced.

Audits often highlight that safety critical tasks are either not formally identified or not supported by clear procedures and training. In some cases, tasks may be documented but not realistic under actual operating conditions.

Ensuring that safety critical tasks are properly analysed, documented, and supported by training is essential for maintaining effective process safety.

Poor Management of Change

Management of Change is another area where gaps frequently appear.

Processes rarely remain static. Equipment is modified, operating conditions change, and new materials are introduced. Each of these changes has the potential to introduce new risks.

A common issue identified during audits is that changes are made without a formal review of their impact on safety. This can result in existing safeguards becoming ineffective or new hazards being introduced without appropriate controls.

Effective Management of Change processes ensure that all modifications are assessed, documented, and approved before implementation. This helps maintain alignment between design intent and operational reality.

Inconsistent Application of Risk Assessment Methods

Audits often reveal inconsistencies in how risk assessment methods are applied across an organisation.

Different teams may use different approaches, terminology, or criteria for assessing risk. This can make it difficult to compare risks, prioritise actions, or ensure a consistent level of safety across the organisation.

For example, one area of a facility may apply detailed hazard identification and risk assessment processes, while another relies on more general assessments.

A consistent approach to risk assessments, including clear criteria and defined methodologies, helps ensure that risks are evaluated and managed effectively across all operations.

Lack of Integration Between Systems

Process safety relies on multiple layers of protection, including inherently safer design, engineering controls, procedures, and human actions. A common gap identified during audits is a lack of integration between these elements.

For example, a safety system may be designed to detect a hazardous condition, but the associated procedures or operator responses may not be clearly defined. Similarly, alarms may be generated without clear guidance on how they should be handled.

This lack of integration can reduce the effectiveness of safety systems (thereby increasing the failure rate) and increase the likelihood of incidents.

Ensuring that all elements of the safety system work together as intended is a key part of improving overall safety performance. This is particularly important when managing complex safety systems, where a structured approach to functional safety helps ensure risks are identified, assessed, and controlled effectively.

Documentation That Does Not Reflect Reality

Documentation is often a focus during audits, and it frequently highlights gaps between what is written and what actually happens in practice.

Procedures may be outdated, unclear, or not followed consistently. In some cases, documentation exists but is not easily accessible to those who need it.

This can create a false sense of security. While systems may appear robust on paper, their effectiveness in real operating conditions may be limited.

Keeping documentation up to date and aligned with actual practices is essential for ensuring that safety systems are effective and usable.

How to Address These Gaps

Addressing gaps identified during process safety audits requires a structured and practical approach.

Organisations should focus on maintaining up-to-date hazard identification, ensuring risk assessments reflect current operations, and strengthening the link between systems, procedures, and people.

Regular reviews, clear communication, and a strong safety culture all play a role in closing these gaps. Importantly, findings from audits should lead to actionable improvements rather than remaining as documented observations.

How 6 Engineering Can Help

At 6 Engineering, we support organisations in identifying and addressing process safety gaps through structured audits and practical engineering insight.

Our approach focuses on real-world application. We assess how systems perform in practice, not just how they are documented. This allows us to identify gaps that could impact safety, reliability, and compliance.

By working with 6 Engineering, organisations can strengthen their hazard identification processes, improve risk assessments, and ensure that safety systems are aligned with operational reality.

If you would like to understand more about how we can support your process safety audits or help address gaps within your existing systems, get in touch with the 6 Engineering team.