Fire Risk Management During Infrastructure Upgrades and Maintenance Works

Critical infrastructure is constantly evolving. Equipment is upgraded, systems are maintained, facilities are refurbished and operational requirements continue to change. While these activities are essential to improving performance and reliability, they can also introduce temporary changes to the fire risk profile of a site.

A fire protection system is designed around the environment it protects. When that environment changes, even temporarily, the risks must be reassessed to ensure protection remains effective.

For organisations operating critical infrastructure, managing fire risk throughout upgrade and maintenance works is essential to protecting people, assets and ongoing operations.

How Can Infrastructure Works Affect Fire Risk?

During normal operation, fire protection systems are designed around known conditions, including equipment layouts, room configurations, occupancy levels and operational processes. However, maintenance and upgrade works can introduce factors that were not present when the original protection strategy was developed. These may include:

• Hot works such as welding, cutting and grinding.
• Temporary electrical equipment and power supplies.
• Changes to equipment layouts or fire loading.
• Increased contractor activity within operational areas.
• Temporary isolation of fire detection or suppression systems.
• Changes to ventilation, cooling or building systems.

Individually, these changes may appear minor. However, within critical environments, even temporary changes can influence how fire risks need to be managed.

Why Fire Risk Planning Should Start Before Work Begins

Effective fire protection during infrastructure projects starts with planning. Before works begin, organisations should understand how proposed activities could affect existing fire safety measures and identify any additional controls required. This includes considering:

1. Whether existing fire suppression systems remain suitable for the changing environment.
2. Whether any systems need to be isolated during works.
3. What temporary protection measures may be required.
4. How contractors will manage fire risks within operational areas.
5. How emergency response arrangements may be affected.

By identifying potential risks early, organisations can reduce disruption while maintaining appropriate levels of protection throughout the project.

Managing Fire Protection During Maintenance and Upgrades

Once work begins, conditions can change quickly. Materials move, equipment is relocated, systems may be temporarily unavailable and multiple teams may be working within the same area. Maintaining communication between project teams, facilities teams and fire protection specialists is key to ensuring risks remain controlled.

Where fire protection systems need to be taken offline, the impact should be carefully assessed and managed. Depending on the circumstances, this may involve additional monitoring, temporary measures or adjusted working practices until normal protection is restored.

A controlled approach ensures that necessary infrastructure improvements can continue without compromising fire safety.

Ensuring Protection Is Restored After Works Are Complete

Completing the physical work does not always mean fire protection is automatically back to its original condition. Before an area returns to normal operation, it is important to confirm that all affected systems have been correctly reinstated and remain fit for purpose. Post-work validation may include:

• Confirming suppression and detection systems are operational.
• Checking affected components and equipment.
• Ensuring coverage has not been compromised.
• Updating system records and documentation.
• Verifying compliance requirements remain satisfied.

These final checks provide confidence that temporary changes have not created ongoing vulnerabilities.