Modern data centres are constantly evolving. As organisations expand their digital infrastructure, introduce new technologies, and increase computing capacity, server rooms and data centres are regularly upgraded to meet changing operational demands. These projects improve efficiency, increase capacity, and support business growth, but they can also introduce significant fire protection risks if existing systems are not reassessed.

Fire protection systems are designed around a specific environment. The layout of the room, equipment density, airflow, electrical loads, and suppression strategy all form part of the original engineering design. Once these conditions change, the effectiveness of the fire protection system can also change.

Unfortunately, fire protection is often only considered after refurbishment work has been completed. By then, new risks may already exist that compromise detection, suppression performance, or regulatory compliance.

Morimi Fire works with organisations throughout South Africa to ensure that fire protection remains aligned with changing data centre environments, allowing businesses to expand confidently without increasing operational risk.

Why Existing Fire Protection May No Longer Be Enough

A fire protection system that performed perfectly when originally installed may no longer provide the same level of protection after a refurbishment.

Many upgrades involve installing additional server racks, replacing electrical infrastructure, increasing power capacity, modifying cooling systems, or introducing new cable routes. While these improvements enhance operational capability, they also change the environment the fire protection system was designed to protect.

Additional equipment increases electrical loads and heat generation. Larger cable installations create more combustible material and additional pathways for smoke movement. Cooling upgrades alter airflow patterns, which directly influence how smoke travels and how suppression agents disperse during a fire event.

Without reviewing the original fire protection strategy, these changes can create gaps that remain hidden until an emergency occurs.

Managing Fire Risk During Live Upgrade Projects

Many data centre upgrades take place while facilities remain partially operational. This creates unique challenges because fire protection systems must continue protecting active equipment while contractors carry out refurbishment work.

Temporary barriers, isolated work zones, construction dust, electrical modifications, and changing occupancy patterns all influence fire risk throughout the project.

Contractors may introduce ignition sources through hot works, temporary electrical supplies, or installation activities. At the same time, sections of the existing fire protection system may require temporary isolation while work is completed.

Managing these competing requirements demands careful planning.

Morimi Fire helps ensure that fire protection remains effective throughout refurbishment projects by reviewing temporary risks, advising on protection strategies, and ensuring systems remain operational wherever possible.

How Infrastructure Changes Affect Fire Protection Performance

Modern server rooms are complex environments where multiple building systems work together.

When infrastructure changes occur, they rarely affect only one aspect of the building. Increasing server density may require additional cooling. Additional cooling may alter airflow. Airflow changes can influence smoke movement and suppression effectiveness.

Similarly, installing new cable trays or power distribution equipment may introduce new wall penetrations or ceiling openings that affect enclosure performance within clean agent protected spaces.

Each modification may appear relatively minor on its own, but together they can significantly influence overall fire protection performance.

Understanding these interactions is essential when planning refurbishment work.

Detection Systems Must Evolve with the Facility

Fire detection systems are positioned according to the original room layout and anticipated fire behaviour.

When server racks are relocated, equipment density changes, or airflow systems are modified, detector placement may no longer provide optimal coverage.

Smoke may accumulate in different areas, travel along new airflow paths, or reach detectors later than expected.

During refurbishment projects, detection strategies should therefore be reviewed alongside infrastructure changes.

Morimi Fire evaluates whether existing detection layouts remain suitable or whether adjustments are required to maintain early warning capability.

Protecting Clean Agent Suppression Performance

Many server rooms and data centres rely on clean agent fire suppression systems because they extinguish fires without damaging sensitive electronic equipment.

These systems depend on carefully engineered discharge characteristics and controlled enclosure conditions.

Refurbishment projects frequently introduce new cable penetrations, equipment supports, ducting, or access systems. Unless these modifications are correctly sealed and assessed, suppression agents may no longer remain within the protected enclosure for the required retention period.

Similarly, additional equipment may alter discharge patterns, creating areas where suppression agent distribution differs from the original design assumptions.

Protecting suppression performance therefore requires more than simply reinstalling equipment after construction has finished.

Recommissioning After Completion

One of the most important stages of any refurbishment project occurs after construction has been completed.

Before the upgraded facility returns to normal operation, fire protection systems should undergo recommissioning to confirm they still perform according to design requirements.

This includes verifying fire detection devices, suppression release sequences, system interfaces, control panels, warning devices, and any integrated building services affected by the refurbishment.

Where clean agent suppression systems are installed, recommissioning should also include confirmation that protected spaces continue meeting enclosure performance requirements.

Recommissioning provides documented assurance that the upgraded facility remains fully protected before returning to service.

Supporting Compliance Throughout the Project

Data centre refurbishment projects often involve multiple contractors, consultants, and project managers.

As infrastructure changes occur, documentation should be updated to reflect the final installation. Drawings, commissioning records, maintenance information, and system programming should all accurately represent the completed facility.

Maintaining accurate documentation supports regulatory compliance, simplifies future maintenance, and provides valuable evidence for insurers and auditors.

Morimi Fire assists clients with reviewing fire protection documentation throughout refurbishment projects, ensuring that completed facilities remain compliant and fully documented.

Planning Fire Protection as Part of Every Upgrade

Fire protection should never be treated as a final consideration after refurbishment work has been completed.

By involving fire protection specialists during project planning, organisations can identify potential issues before construction begins. This reduces costly redesigns, prevents delays during commissioning, and ensures new infrastructure integrates seamlessly with existing fire protection systems.

Early planning also allows project teams to coordinate electrical work, mechanical installations, suppression systems, and detection strategies as part of a single integrated solution.

This collaborative approach significantly improves long-term system reliability.

Conclusion

Data centre upgrades and refurbishments are essential for supporting business growth, but they also introduce new fire protection challenges.

Changes to equipment layouts, electrical infrastructure, cooling systems, and building services can all affect how detection and suppression systems perform. Without proper reassessment, facilities risk creating hidden vulnerabilities that may only become apparent during an emergency.

By reviewing fire protection throughout every stage of a refurbishment project and recommissioning systems before returning to operation, organisations can maintain compliance, protect critical infrastructure, and reduce operational risk.

Morimi Fire provides specialist fire protection expertise for data centre upgrades, ensuring fire safety evolves alongside your business.