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The Hidden Risk of Legacy Process Safety Systems: What Happens When the Expert Retires?

Organizations that recognize this risk early have an opportunity to act before knowledge disappears, supportability declines, and modernization becomes urgent.

Most organizations spend considerable effort identifying single points of failure within their operating facilities.

They install redundant pumps, backup power systems, spare instrumentation, and emergency shutdown systems. They conduct Process Hazard Analyses, evaluate safeguards, and implement layers of protection to reduce operational risk.

Yet many of these same organizations unknowingly maintain a critical vulnerability within their information systems.

A surprising number of Process Safety Management platforms depend on a single individual.

That individual may be an IT manager, a SharePoint administrator, a database specialist, a software developer, or an engineer who participated in the original implementation years ago. Over time, this person becomes the organization’s unofficial expert on how the system works, how it was configured, how it integrates with other applications, and how to recover when something goes wrong.

The risk often remains hidden because the system appears stable and reliable.

Until the expert retires.

The Legacy System Trap

Many process safety software deployments have been operating successfully for years.

The platform may support critical activities such as:

  • Management of Change (MOC)
  • Process Hazard Analysis (PHA)
  • Incident Investigations
  • Follow-up Item Management
  • Process Safety Information (PSI)
  • Audits and Compliance Activities
  • Procedures and Work Instructions

From the perspective of the user community, the system simply works.

Because there are few visible problems, management naturally assumes the underlying technology is healthy and sustainable.

Unfortunately, stability can create a false sense of security.

As systems age, documentation often becomes outdated. Original implementation decisions are forgotten. Configuration knowledge becomes concentrated within a shrinking group of individuals. Software versions become increasingly difficult to support. Eventually, the organization reaches a point where nobody fully understands the platform except one or two key people.

At that moment, the greatest risk is no longer technical.

It is human.

Knowledge Is an Asset—Until It Walks Out the Door

Industrial organizations are currently experiencing a significant demographic transition.

Many of the engineers, administrators, and technology professionals who implemented enterprise systems during the early 2000s are approaching retirement.

These individuals often possess years of institutional knowledge that was never formally documented.

They know:

  • Why the system was configured a certain way.
  • Which customizations were implemented.
  • Which integrations are still active.
  • Which reports are business-critical.
  • How to recover from uncommon failures.
  • Which shortcuts and workarounds have accumulated over time.

When these individuals leave, much of that knowledge leaves with them.

The organization may still possess the software, the servers, and the documentation. What it no longer possesses is the practical expertise required to maintain and evolve the system confidently. The result can be a sudden increase in operational risk.

The Real Cost of Losing a Subject Matter Expert

Organizations often underestimate the financial impact of losing key technical personnel.

Replacing a specialized resource involves far more than filling a vacant position.

The organization may face:

  • Extended recruiting efforts.
  • Higher compensation requirements.
  • Consultant fees.
  • Knowledge transfer challenges.
  • Delayed projects.
  • Increased support incidents.
  • Reduced confidence in future upgrades.

Even when a replacement is found, it can take months or years to develop the same depth of understanding as the departing expert.

In some cases, the required expertise may no longer be readily available in the marketplace.

Technologies that were once common can become increasingly difficult to support as industry skills migrate toward newer platforms and cloud-based solutions.

What Happens During an Emergency?

The true value of institutional knowledge often becomes apparent during unexpected events.

Consider the following scenarios:

  • A critical server fails.
  • A database becomes corrupted.
  • A cyber security incident occurs.
  • An audit identifies a compliance gap.
  • A major software upgrade becomes mandatory.
  • An acquisition requires systems integration.

These events demand rapid access to experienced personnel who understand both the technology and the business processes it supports.

If that expertise no longer exists within the organization, recovery efforts become slower, more expensive, and significantly more uncertain.

For a Process Safety Management platform, the consequences can extend well beyond information technology.

Delayed access to MOC records, follow-up items, incident investigations, or Process Safety Information can directly impact operational decision-making.

Applying Process Safety Principles to Information Systems

Process safety professionals routinely evaluate equipment for single points of failure.

The same discipline should be applied to information systems.

Organizations should ask:

  • How many people understand the architecture of our platform?
  • Could we recover the system without a specific individual?
  • Is our documentation current?
  • Do we understand all integrations and customizations?
  • Could we successfully upgrade the platform today?
  • Do we have a succession plan for key technical resources?

If any of these questions produce uncertainty, the organization may already have a hidden vulnerability.

Modernization Is a Risk Management Strategy

Many organizations view modernization projects as technology initiatives.

In reality, they are often risk reduction initiatives.

Modern platforms can reduce dependency on individual experts by providing:

  • Standardized architectures.
  • Vendor-supported environments.
  • Automated backup and recovery capabilities.
  • Simplified upgrade paths.
  • Enhanced security management.
  • Broader availability of support resources.

The objective is not merely to replace technology.

The objective is to reduce organizational dependence on irreplaceable knowledge holders and improve long-term operational resilience.

Looking Beyond the Server Room

When evaluating the health of a Process Safety Management program, most organizations focus on compliance, procedures, audits, and training.

Few evaluate the resilience of the systems that support those activities.

Yet the information platforms behind modern process safety programs have become operationally critical.

The greatest threat to these systems may not be cyberattacks, hardware failures, or software defects.

It may be the retirement date of the one person who knows how everything works.

Organizations that recognize this risk early have an opportunity to act before knowledge disappears, supportability declines, and modernization becomes urgent.

The question is not whether key personnel will eventually leave.

The question is whether the organization will be prepared when they do.

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