Managing Personality-Driven Disruptions in PHA Sessions

By John Binion, P.E., FSEng TÜV Rheinland | Process Safety Technical Consultant

Process Hazard Analyses (PHAs) are highly technical, team-based reviews used to systematically evaluate process equipment, safeguards, procedures, and operating scenarios to identify credible hazards before they become incidents. Anyone who has facilitated a PHA knows technical expertise is only part of the equation. The real challenge often lies in managing the different perspectives inside the room.

While most PHA training within broader Process Safety Management (PSM) programs focuses on methodology, regulations, and documentation requirements, far less attention is paid to the behavioral patterns that can shape (and sometimes derail) productive discussions. Experienced facilitators quickly learn that certain personality-driven behaviors tend to appear repeatedly.

These behaviors aren’t necessarily harmful; in fact, they often come from highly knowledgeable team members who care deeply about the process. When left unmanaged, they can pull conversations off course, consume valuable time, and reduce the effectiveness of the analysis.

After many years of facilitating PHAs, five recurring behavioral archetypes tend to surface during these discussions. Understanding these archetypes and learning how to redirect them productively can help facilitators turn potential disruptions into valuable contributions.

Five archetypes consistently emerge in PHA discussions:

• The Skeptic
• The Catastrophizer
• The Academic
• The Excuser
• The Saboteur

The Skeptic

The Skeptic is often one of the most technically knowledgeable people in the room. Their instinct is to challenge whether a scenario is truly credible.

Common responses from the Skeptic include statements like:

• “That can’t happen; we have a relief valve.”
• “The safety system would never allow that.”
• “That’s not how the system is designed to work.”

Because they trust the design and safeguards, Skeptics may dismiss scenarios as unrealistic or “double jeopardy,” where two independent failures would have to occur simultaneously. They focus on how the system is intended to operate rather than how it might behave under abnormal conditions. If this perspective dominates the conversation, the team may prematurely dismiss credible hazards.

However, the Skeptic’s deep understanding of the system is also their greatest strength. They often know the equipment, safeguards, and chemistry better than anyone else in the room. When their expertise is directed productively, they can help refine cause-and-consequence relationships, clarify how safeguards function, and challenge weak assumptions in the PHA.

A useful facilitation technique is to ask the team to temporarily imagine the system without safeguards — essentially treating the process as “straight pipe” with no intervention from operators or automated systems. Once the underlying hazard is clearly understood, the Skeptic’s deep knowledge of the system can help identify and validate the safeguards that protect against it.

The Catastrophizer

While Skeptics question whether a scenario could happen, the Catastrophizer assumes that nearly every scenario could escalate into the worst possible outcome. Discussions quickly move toward extreme consequences: explosions, large-scale facility damage, or cascading failures.

This tendency often emerges after major industry incidents or internal events. When teams are reminded of catastrophic accidents, they naturally become more cautious. While caution is healthy, overly conservative scenarios can slow the analysis significantly. Conversations may spiral into increasingly unlikely chains of events that are difficult to evaluate meaningfully.

Yet Catastrophizers also bring an important perspective to the team. Their thinking helps uncover rare but high-consequence hazards that might otherwise be overlooked. They can be particularly valuable during Layers of Protection Analysis (LOPA) discussions, where understanding escalation pathways, enabling conditions, and other conditional modifiers becomes critical. The key is helping them focus on the primary loss-of-containment event, the initial point where the hazard is realized, rather than extending the scenario indefinitely.

Once the first credible loss of containment is defined, the team can evaluate consequences and safeguards without allowing the discussion to expand endlessly into secondary or site-wide disaster scenarios.

The Academic

The Academic is typically the most technically precise person in the room. While the Skeptic focuses on whether scenarios are credible, the Academic focuses on technical detail — the chemistry, calculations, and engineering specifics behind the process. This expertise is extremely useful, but it can also slow the analysis.

Academics tend to pursue extreme levels of precision. Conversations may drift into detailed calculations, theoretical discussions, or attempts to quantify variables with unnecessary accuracy. In a time-constrained PHA session, this level of detail can slow progress.

However, their analytical skills are also critical to the discussion. Academics can quickly estimate response times, calculate pressures, flow rates, or blast impacts, or determine whether a safeguard is capable of mitigating a scenario.

The most effective way to redirect the Academic is simple: assign homework. When detailed calculations are necessary but time is limited, the facilitator can ask the Academic to research the question outside the meeting and return with an answer later. This allows the team to continue progressing while still benefiting from the Academic’s expertise.

Academics can also help align engineering theory with operational reality when facilitators intentionally balance their insights with the experience of operators who run the process every day.

The Excuser

The Excuser places tremendous trust in human performance, often out of deep respect for the operators they supervise or train, which can make it difficult to imagine experienced personnel making mistakes.

Typical responses often include statements like:

• “Operators wouldn’t do that.” (Confidence in operator judgment)
• “Everyone knows not to do that.” (Assumption that the rule is universally understood)
• “That would never happen here.” (Belief that the site’s culture, experience, or safeguards make the scenario implausible)

While well intentioned, this perspective can lead teams to underestimate human error and place too much confidence in administrative safeguards such as procedures, checklists, or alarms. In reality, human performance is influenced by fatigue, distractions, workload, and many other factors.

Excusers also contribute valuable insight to the discussion: they often possess deep knowledge of how work is performed. Operators frequently rely on undocumented practices, practical adjustments, or institutional knowledge that may not appear in written procedures. These insights can reveal gaps in training, outdated documentation, or operational workarounds that deserve closer attention.

A helpful reminder when redirecting the Excuser is that evaluating human error is not an accusation against individuals. Instead, it acknowledges a universal truth: people make mistakes. PHAs must consider not only how experienced operators perform today, but also how future operators, who may be less familiar with the process, will interact with the system years from now.

The Saboteur

The Saboteur is perhaps the most challenging archetype in the room; unlike the other archetypes, the Saboteur often doesn’t want to participate at all. They may feel PHAs are pointless exercises, believe that previous recommendations were ignored, or resent being pulled away from other responsibilities. In some cases, their resistance may reflect deeper issues within the organization’s safety culture.

Saboteurs may interrupt discussions, dismiss the process, or show open frustration with the exercise. At first glance, this behavior appears purely disruptive, yet it can also serve as an early warning sign. Resistance within a PHA session may indicate that employees feel safety concerns are not taken seriously, that previous hazards were never addressed, or that production demands consistently override safety priorities.

When facilitators recognize this dynamic, the Saboteur’s perspective can provide important insight into the organization’s safety culture. An effective response is to re-establish the purpose of the PHA and reinforce that the exercise is not simply a compliance requirement, but a way to protect workers, the facility, and the surrounding community. When teams see that concerns raised during the PHA lead to meaningful action, even skeptical or disengaged participants often become strong advocates for the process.

Strong Facilitation Turns Disruption into Value

Every PHA team contains a mix of perspectives, experiences, and working styles. These dynamics can either strengthen the analysis or derail it. Without careful management of these different archetypes, discussions can drift into technical debates, tangents about unrealistic scenarios, or dismissive assumptions. Teams may spend time arguing over minor details while critical hazards receive too little attention.

Effective facilitators recognize these patterns early and guide discussions in a productive direction. Their role is not to silence differing perspectives, but to channel them in ways that strengthen the analysis.

Confidence plays a key role; facilitators must be willing to redirect discussions, balance competing viewpoints, and occasionally step in to keep the team focused on the task at hand.

When guided effectively, each archetype can contribute valuable insight:

• The Skeptic helps test assumptions.
• The Catastrophizer highlights high-consequence risks.
• The Academic provides technical precision.
• The Excuser reveals how work is performed in the field.
• The Saboteur may surface deeper cultural issues that deserve attention.

Ultimately, PHAs succeed because facilitators understand how to guide discussions and channel different perspectives into a productive analysis. Don’t wait for a near-miss to expose the gaps. Let our Team facilitate your next PHA. Contact us today.