When it comes to running a process site, change is inevitable. From upgrading equipment to modifying pipework, the way these changes are managed can have a massive impact on safety, efficiency, and compliance.
When it comes to running a process site, change is inevitable. From upgrading equipment to modifying pipework, the way these changes are managed can have a massive impact on safety, efficiency, and compliance. That’s where the Management of Change (MOC) system comes into play—a procedural framework designed to organise changes systematically, ensuring they’re planned, safe, and properly documented.
At its core, MOC is about structure and accountability. Without it, changes—whether small or large—can easily spiral into disorganised chaos. Let’s break it down with a simple example:
Imagine a process site needs to replace a valve. Without an MOC system, a single person or team might oversee the whole process, from planning to execution. Sounds fine on the surface, but without a formal framework, there’s a risk of missed steps, overlooked safety checks, and undocumented changes.
An MOC system ensures there’s a documented process for every stage of the change, from planning and risk assessment to the physical work and final sign-off. It’s like following a detailed flowchart: you start with the planning stage, move through the practical implementation, and finish with updating site documentation and safety checks. Each step is tracked, ensuring nothing is left to chance.
I spent over 10 years working at the Coryton Refinery, and much of my role focused on MOC procedures—particularly around document control. Every change on-site, no matter how small, had to be documented meticulously. P&IDs, layouts, and other critical drawings were updated to reflect the as-built condition after the change.
The MOC system there was non-negotiable: a project couldn’t be signed off as completed unless every box was ticked. This systematic approach wasn’t just about compliance; it was about creating a safer, more reliable work environment where nothing was overlooked.
While MOC is second nature at large refineries, smaller sites like chemical storage terminals often face a different reality. These terminals typically operate with smaller teams, fewer resources, and limited access to skilled personnel with both surveying and CAD expertise for document control.
Unfortunately, keeping site documentation up to date is often seen as a lower priority—especially when site changes are infrequent.
The result? Sites are left with outdated P&IDs and drawings, which can cause issues down the line, particularly when it comes to compliance or future modifications.
At Neonex Digital, we specialise in producing and maintaining accurate as-built documentation for process sites. From P&IDs and 3D models to bund volumes and more, our expertise can even move into maintenance for documentation so they are always up to date.
One way we support our clients is through Maintenance Agreements. These simple Service Level Agreements (SLAs) are ideal for smaller sites that don’t have the workload—or budget—to justify a full-time CAD or survey team.
With an SLA, we handle everything from site surveys to documentation updates, giving you one less thing to worry about. It’s a cost-effective solution that ensures your site stays compliant and ready for future changes.
Whether you’re running a refinery or a small chemical storage terminal, having an MOC framework—or at least a similar process—is invaluable. It’s not just about ticking boxes; it’s about creating accountability, improving safety, and ensuring your site runs smoothly.
If you’re struggling to keep your documentation up to date, or if you’re considering implementing an MOC system, get in touch with Neonex Digital. We’re here to help you streamline your processes, stay compliant, and focus on what you do best.
