Simplifying pump room procurement: Idroelettrica and Millars Pumps’ approach to fire pump projects

Giovanni Vaccari, Sales Export Manager at Idroelettrica, sets out how collaboration with Millars Pumps combines Italian manufacturing expertise with local UK technical support across the project lifecycle

Sourcing reliable fire pump systems has become an increasingly challenging task for the UK fire industry, across both new build and retrofit projects.

Fire pumps are highly specialised components within a building’s fire protection system, which must perform seamlessly in critical situations.

As a result, they are subject to strict regulations, and must comply with a range of UK and international standards.

In addition, bespoke designs are often required to suit the specific needs of each building according to its use, size, layout and fire safety procedures.

This combination of technical complexity, regulatory compliance and customisation can make procurement time-consuming and complicated, with fire protection contractors and engineers facing long lead times while trying to source the right equipment for each project.

Millars Pumps, the new exclusive distributor of Idroelettrica fire pumps and pump room solutions in the UK, has been created to help alleviate these issues.

 By combining decades of Italian manufacturing expertise with local UK technical support, the aim is to simplify procurement, improve reliability and competitiveness and provide greater support throughout the entire process, from specification to installation to long-term maintenance.

Expert specification

One of the biggest challenges facing UK fire pump projects is getting the specification right at an early stage.

This is essential to avoid late design changes, delays, or even costly remedial work.

Specification starts with understanding and assessing the characteristics of the building, such as the type, use, occupancy levels, number of floors, the planned sprinkler or water mist system design, available space for the pump room, and access to a water supply.

These factors will determine the ‘fire demand’ or amount of flow and pressure the pump system must support, and whether additional equipment such as a water storage tank is required.

Building-specific calculations are made to determine the most suitable pump system, which must then be designed to comply with relevant standards.

At Idroelettrica, our strength lies in our engineering-led approach to fire pump design.

We have extensive experience in manufacturing fire pump systems for global markets, which means we can work closely with Millars Pumps to support UK contractors, consultants and developers during the crucial specification phase.

We ask the right questions and draw from our expertise to ensure pump sets, controllers and enclosures are correctly sized and configured for each application, reducing risk later in the project.

Compliant and future proof

Navigating the standards and regulations for UK fire pump systems is particularly complex.

 For example, depending on the application, fire pumps may need to comply with BS EN12845 which covers automatic sprinkler systems in buildings in the UK and Europe, BS 9251:2021 for fire sprinkler systems in UK residential buildings, NFPA-20 which is an international standard for the installation of stationary fire pumps, or FM 3-7 which covers requirements from the independent testing agency, FM Approvals, for fire pump sets.

 For many buildings, a combination of these will be needed.

Each of these standards brings its own requirements around testing, control systems and documentation which are not only highly technical but are also regularly updated, making compliance increasingly challenging.

 Updates are driven by changes in building use, insurer demands or lessons learned from fire incidents.

 So it’s important that design specifications are not only compliant at the time of design, but also robust enough to adapt to possible requirement changes in years to come.

This is where modular pump rooms solutions can provide a more forward-thinking and future-proof approach.

 While traditional fire pump rooms are constructed on site, with different parties responsible for building work, mechanical installation and electrical installation, modular pump rooms are pre-engineered in their entirety in the factory.

 Working to detailed specifications, the components can be assembled and tested prior to delivery to ensure the complete system conforms to industry standards, offering greater control and reassurance.

Our Idroelettrica factory in Modena in Italy, for example, features a state-of-the-art, in-house testing facility, where all our pump systems are assembled and tested under controlled conditions, providing documented assurance.

Pre-engineered for convenience and access

At Idroelettrica, our most popular modular system is the Firebox.

 It’s a pre-engineered ‘plug and play’ pump room that arrives on site fully fitted, tested and ready for installation.

Firebox combines pump sets, controllers, pipework and the enclosure into a single, integrated solution, manufactured in advance to suit each building’s space, fire protection plan and technical requirements.

For developers and contractors working to tight programmes, where schedule certainty matters, the convenience is a major advantage.

Firebox reduces installation time on site, cuts labour costs and reduces project risk compared to traditional onsite builds.

The innovative design of Firebox means that all sides are also doors that fully open, providing 360° access.

This provides clear working space around pumps, valves and controllers and supports regular inspection, testing and servicing.

Local customer support and maintenance

While manufacturing quality is fundamental, we understand that the long-term performance of a fire pump system depends on effective local support.

Fire pumps require regular inspection and maintenance to ensure they continue to be operational.

As our exclusive UK distributor, Millars Pumps provides a direct link between manufacturer and customer, helping to streamline procurement.

This simplified route to market improves communication, shortens lead times and provides greater certainty around delivery.

The team at Millars Pumps are also on hand to support customers throughout installation, commissioning and with ongoing servicing and maintenance.

In this way, our customers benefit from both the expertise of a global leader and the practical, long-term customer relationships available from a UK-based firm.

From factory to site

As fire safety expectations continue to rise, it’s clear that fire pump room procurement is no longer simply a matter of selecting equipment.

 It requires careful consideration of compliance, build quality, programme certainty and long-term serviceability.

 Traditional site-built approaches can struggle to keep pace with these demands, particularly on complex or time-sensitive projects.

Pre-engineered, modular pump rooms, like Firebox, can provide a more controlled and reliable alternative, offering bespoke design with factory-built quality and certified performance.

When combined with the local technical expertise and long-term support provided by Millars Pumps, this approach offers a more resilient model for improving consistency, reducing risk and future-proofing critical fire protection infrastructure.

 Solutions like this that can simplify procurement while enhancing reliability, compliance and long-term value are likely to play an increasingly important role across the UK fire industry in the years ahead.

For more information visit: www.millarspumps.co.uk

This was originally published in the March 2026 Edition of International Fire & Safety Journal. To read your FREE copy, click here.

Dubai law sets new safety rules for public spaces and events

Dubai safety law to take effect in June

Dubai has issued Law No. (2) of 2026 on public safety, creating a new framework for venues, events, buildings, pools, beaches, products and daily activities across the emirate.

Gulf News reported that the law was issued by Sheikh Mohammed bin Rashid Al Maktoum in his capacity as Ruler of Dubai, and that it will come into effect on 1 June 2026.

The legislation is intended to protect lives and property, reduce accidents and support sustainable growth in the city.

It replaces Local Order No. (11) of 2003 on Public Health and Community Safety in Dubai, with existing rules under that order remaining in effect until new guidelines are issued, provided they do not conflict with the updated law.

The law sets requirements for public venues and events, including standards for equipment, lighting, ventilation, entry points and exit points.

It also requires firefighting equipment, alarm systems, emergency evacuation plans, first-aid supplies, trained safety supervisors, clear signage and a public safety management plan.

Noise levels and crowd sizes are also addressed, with the aim of reducing overcrowding and protecting hearing.

Duties for operators, residents and owners

Gulf News also reported that the law extends to occupied buildings, homes and recreational areas, including swimming pools and beaches.

Maintenance work in occupied buildings must follow strict safety standards, especially where electrical equipment or other higher-risk tasks are involved.

Property owners, operators and service providers are responsible for complying with the standards and with related regulations issued by authorities.

Residents and visitors are expected to follow safety procedures, cooperate with safety supervisors and comply with evacuation instructions during emergencies.

Beach users must respect designated swimming times, avoid restricted staff areas and follow guidance when using equipment.

The law also prohibits the handling of explosives, fireworks, toxic substances and flammable materials without authorisation.

It bans the sale or use of tools, devices and products that fail to meet safety requirements or create a risk to public safety.

Products covered by the law must include safe-use instructions in Arabic and English.

Penalties and transition period

Gulf News reported that fines for breaches range from Dh500 to Dh1 million, with repeated violations within a year allowing the fine to rise to Dh2 million.

Dubai Municipality and authorised staff from other authorities can record violations, issue reports and involve the police where necessary.

Those affected by decisions made under the law can submit a written appeal within 10 working days.

A committee appointed by the Director General of Dubai Municipality or a relevant authority will review appeals within 30 days, and its decision is final.

Affected parties must fully comply with the law within two years, with a one-time extension available if approved by the Executive Council on the Municipality’s recommendation.

The law states that Dubai Municipality and other authorities are not liable for damages caused by an owner’s failure to comply, with responsibility resting with the owner.

Glasgow fire forces closure of Scotland’s busiest rail station

Firefighters respond to Union Street blaze in Glasgow

A major fire near Glasgow Central Station forced the closure of the station and the suspension of rail services after a blaze broke out in a commercial building on Union Street in Glasgow city centre on Sunday 8 March.

Media reporting and statements from Scottish Fire and Rescue Service indicate the alarm was raised at about 15:45 after a fire was reported in a shop within the building, which forms part of a block of multi-storey Victorian commercial properties close to the entrance of the station.

Firefighters attended the incident with 15 appliances, including three high-reach vehicles, while crews pumped water from the River Clyde as the fire developed during the afternoon and evening.

Scottish Fire and Rescue Service said there had been no reported casualties as of 20:30 on Sunday evening.

Fire first reported in Union Street shop

Reports indicated the fire was first reported in a vape shop on Union Street near Glasgow Central Station after emergency services were alerted to the incident at about 15:45.

Images and aerial footage from the area showed flames spreading through the structure as fire spread across the building during the incident.

Fire damage was visible across several floors of the property as firefighters continued working to control the blaze.

Large-scale fire service response mounted

Scottish Fire and Rescue Service said 15 appliances were deployed to tackle the fire, including three high-reach vehicles used by firefighters operating above street level.

Firefighters used aerial platforms to direct water onto the upper sections of the building while crews at street level worked to contain the flames.

Water supply operations included pumping water from the River Clyde as crews continued the firefighting operation.

Fire spread through historic city centre buildings

The fire affected a row of Victorian buildings around Union Street and Renfield Street in Glasgow city centre.

Drone images from the scene showed the building’s roof had collapsed and that the fire had spread through the structure.

Several sections of the building appeared to be heavily damaged as the incident continued.

Structural damage and fire development

A structural collapse was reported during the firefighting operation as the fire progressed through the building.

BBC Scotland journalist Paul Ward reported from the scene: “I’ve just watched the dome on the building next to Central Station fall in the fire.

“Four floors of the building are still standing from what I can see on Renfield Street.

“Two firefighters on height appliances are dampening down flames.

“Embers can still be seen burning in the lower levels of the building.”

Impact on transport and city infrastructure

The incident resulted in the closure of Glasgow Central Station and the suspension of rail services through the station.

ScotRail said the closure would continue into Monday morning while passengers were advised to check travel updates with their operators.

Network Rail said: “Glasgow Central Station has been closed until further notice, and will not reopen on Monday morning, following a fire at a vape shop on Union Street this afternoon.

“Emergency services, including Police Scotland and the Scottish Fire and Rescue Service, are on site and managing the incident. As a precaution, all services through Glasgow Central have been suspended and passengers are advised to seek alternative travel arrangements.

“We will provide further updates as soon as more information becomes available.”

Bus operators said some services would accept train tickets for affected passengers as disruption continued in the city centre.

Public safety response

Police urged members of the public to stay away from the area around the fire as crowds gathered near cordons around Union Street and Gordon Street.

Journalist Jamie McIvor reported from the area that the fire was “one of the biggest – and most visible – in the city centre for many years”, adding that “Central Staton is closed and bus routes are disrupted.”

First Minister John Swinney said he was “deeply concerned” about the fire near Glasgow Central Station and was “very grateful to all of the emergency services who are responding.”

He added: “Please continue to follow travel guidance, avoid the area and stay safe.”

Businesses describe damage after blaze

Several businesses based in the affected building posted statements on social media following the fire.

Sexy Coffee said it was “devastated” that its Union Street branch had been destroyed, describing the situation as “heartbreaking” and adding that it would “rebuild, revamp the shop and reopen”.

Lucky in Love tattooing said it was “devastated”, adding that the business was in “complete shock”.

Nail salon Amore said it was “absolutely heartbroken”, describing the situation as “horrendous”.

The owner of Willow hair salon said her business had been “burned to the ground”.

Firefighters remained at the scene as crews continued working to extinguish the fire and secure the building.

International Women’s Day: Women contributing to fire and life safety leadership

International Women’s Day provides an opportunity to recognise the work of professionals across the fire and life safety sector.

Across engineering, standards development, operational leadership and personal protective equipment design, women continue to contribute knowledge and leadership that support safer buildings, workplaces and communities.

Over the past year, International Fire and Safety Journal (IFSJ) and Fire and Safety Journal Americas (FSJA) have published interviews and features with women working across different areas of the fire safety profession. These articles address topics including detection systems, regulatory standards, fire protection engineering, PPE development and firefighter health.

The following selection highlights several of those contributions.

Richelle Sinclair – The Fire Knight

Richelle Sinclair, Executive Representative to the CEO at The Fire Knight, discusses how fire protection strategies must adapt to changing fire behaviour linked to modern materials and faster incident growth.

Her article examines how legacy detection and suppression approaches may struggle to address emerging risks as construction materials and building environments evolve.

Read the full article:
https://internationalfireandsafetyjournal.com/smart-detect-firek-night/

Sarah Lawson – Advanced

Sarah Lawson, Operations Director at Advanced, provides insight into the company’s strategy for expanding in the United States fire safety market.

The interview discusses compliance requirements, intelligent fire alarm technology and the role of integrated systems in meeting regulatory expectations.

Read the full article:
https://internationalfireandsafetyjournal.com/ul-axis-advanced-us/

Rekha Agrawal – KiddeFenwal

Rekha Agrawal, CEO of KiddeFenwal, appears in two International Fire and Safety Journal interviews examining organisational change and fire protection challenges.

In the first article, Agrawal discusses how private equity investment can influence operational practice, governance structures and decision-making in fire protection organisations.

Read the article:
https://internationalfireandsafetyjournal.com/private-equity-kidde/

In a second interview, she reflects on KiddeFenwal’s first year as an independent business and discusses safety considerations across three high-risk global applications.

Read the article:
https://internationalfireandsafetyjournal.com/the-100-year-startup-kiddefenwal/

Sawsan Dahham – SIENA

Sawsan Dahham, CEO of SIENA, examines fire and life safety planning for large-scale developments across the Gulf Cooperation Council region.

Her article discusses the fire safety considerations associated with giga-projects, skyscrapers, rehabilitation work and complex engineering environments.

Read the full article:
https://internationalfireandsafetyjournal.com/fire-and-life-safety-sawsan-dahham-gcc/

Jo Garner – Bristol Uniforms

Jo Garner, General Manager at Bristol Uniforms, reflects on her first year leading the business and outlines product and service priorities within the firefighter PPE sector.

The article addresses product development, customer engagement and the operational considerations involved in supplying protective clothing for fire services.

Read the full article:
https://internationalfireandsafetyjournal.com/strength-in-stitching-how-msas-bristol-team-builds-firefighter-ready-ppe/

Nicola John – Fire Door Maintenance

Nicola John, Managing Director at Fire Door Maintenance, discusses the role of training and competence in fire door safety.

Her article focuses on how duty holders, maintenance teams and contractors can meet regulatory expectations through consistent inspection, maintenance and education programmes.

Read the full article:
https://internationalfireandsafetyjournal.com/rethinking-fire-door-safety-why-fire-door-maintenance-says-competence-still-needs-work/

Anne Hayes – BSI

Anne Hayes, Director of Sectors and Standards Development at BSI, discusses the update to BS 9991:2024 and its implications for residential fire safety.

The article considers how the revised standard may affect building design, fire engineering approaches and regulatory compliance for residential developments.

Read the full article:
https://internationalfireandsafetyjournal.com/rethinking-fire-door-safety-why-fire-door-maintenance-says-competence-still-needs-work/

Leah Kosolofski – Transport Canada

In Fire and Safety Journal Americas’ Women in Fire and Safety series, Leah Kosolofski, ARFF Specialist for Transport Canada, discusses occupational cancer risks in the fire service and the importance of awareness and education.

She reflects on her experiences in the industry and how they informed her advocacy for improved understanding of firefighter health risks.

Read the full article:
https://fireandsafetyjournalamericas.com/women-in-fire-and-safety-leah-kosolofski/

Kelly Franko – Seraphina Safety Apparel

Kelly Franko, Founder of Seraphina Safety Apparel, discusses the development of personal protective equipment designed specifically for women.

Her article also addresses the creation of the Alliance of Women’s Safety Apparel Manufacturers, a non-profit association supporting the development and availability of women’s PPE.

Read the full article:
https://fireandsafetyjournalamericas.com/women-in-fire-and-safety-kelly-franko/

Amy Roosa – The Safety Rack

Amy Roosa, Founder and Executive Director of The Safety Rack, discusses the “PPE paradox” and the need for protective equipment designed to fit women in the workplace.

The article also highlights her work to close the PPE equity gap through education, research and advocacy initiatives.

Read the full article:
https://fireandsafetyjournalamericas.com/women-in-fire-and-safety-amy-roosa/

Lauren Burke DeVere – Fire-Dex

Lauren Burke DeVere, President and CEO-elect of Fire-Dex, discusses leadership within the fire safety industry and her upcoming transition into the company’s top executive role.

She reflects on career progression, organisational priorities and balancing professional responsibilities with family life.

Read the full article:
https://fireandsafetyjournalamericas.com/women-in-fire-and-safety/

Recognising contributions across fire safety

The perspectives highlighted here address practical challenges facing the sector today. From adapting fire detection to modern materials and managing organisational change, to improving firefighter PPE design and updating residential safety standards, each article focuses on a specific issue affecting fire and life safety professionals.

Together, they provide insight into the work being carried out across engineering, manufacturing, regulatory development and frontline safety practice. The interviews and features also show how professionals across different regions and disciplines contribute to improving systems, standards and operational approaches.

International Women’s Day offers a moment to revisit these conversations and recognise the individuals contributing their knowledge, leadership and experience to the continued development of fire safety practice.

Related: Read The Fire Industry Association’s article ‘The Growing Impact of Women in the Fire and Life Safety Industry

Cleaner concentrate choices: Inside the global SFFF market expansion

IFSJ’s market report tracks the global SFFF market, sizing demand, forecasts, policy drivers, adoption by region and procurement issues for airports and industrial sites

Synthetic fluorine-free foams (SFFF) are moving from limited use to standard specification for Class B suppression in many sectors.

This shift is being driven by tighter PFAS regulations, the financial burden of managing legacy AFFF inventories and greater scrutiny of foam chemistry by buyers, regulators and insurers.

Airports, petrochemical facilities, marine terminals and municipal fire departments are updating procurement frameworks and operational procedures as they assess performance criteria alongside environmental and legal considerations.

This report examines the global SFFF market, focusing on current valuation, projected growth, adoption drivers and regional demand patterns.

Market overview

SFFF forms part of the broader PFAS-free firefighting foam segment, which remains smaller than the legacy fluorinated foam market but is expanding rapidly.

According to Fact.MR, PFAS-free firefighting foams are projected to grow from $310.0 million in 2026 to $937.3 million by 2036, reflecting a compound annual growth rate of 11.7%.

Within this category, synthetic detergent-based fluorine-free foams account for about 44% of the segment, placing the estimated SFFF market value at approximately $136 million in 2026 and projected to reach about $412 million by 2036.

Future Market Insights reports similar expansion trends, forecasting PFAS-free foam growth from $346.3 million in 2026 to more than $1 billion by 2036.

The wider firefighting foam market remains substantially larger.

According to Custom Market Insights, the total global firefighting foam market was valued at approximately $5.82 billion in 2024 and is projected to reach $7.57 billion by 2034.

The PFAS-free segment is expected to account for an increasing share of this total as replacement cycles accelerate.

Strengths

SFFF provides an alternative to fluorinated concentrates while maintaining operational capability for Class B suppression.

This transition can simplify chemical management and reduce the long-term liabilities associated with PFAS detection in soil, groundwater and infrastructure.

Manufacturers are developing SFFF formulations designed for compatibility with fixed suppression systems, mobile monitors and portable equipment, subject to validation testing.

This compatibility allows agencies and industrial operators to transition while maintaining existing infrastructure where feasible.

Technical improvements in polymer hydration and concentrate formulation have improved viscosity stability and proportioning reliability, which supports consistent performance during storage and discharge.

This reliability is particularly relevant in environments where foam systems may remain inactive for extended periods.

Alcohol-resistant SFFF variants are expanding operational coverage for facilities handling polar solvents such as ethanol, methanol and acetone.

This allows sites to standardize inventory across multiple hazard classes, reducing storage and logistics complexity.

Challenges

System compatibility verification remains one of the primary barriers to adoption.

Many operators must conduct proportioning tests, discharge verification and documentation to confirm performance with their specific equipment.

This process can require technical support, downtime and capital planning.

Application techniques for fluorine-free foams may differ from legacy fluorinated foams, particularly in low expansion applications.

This requires updated training procedures to ensure effective use in emergency conditions.

Product approval and certification availability can also limit supplier selection.

Buyers often require listings from recognized testing bodies or approval from authorities having jurisdiction, which can extend procurement timelines.

In addition to concentrate replacement, organizations face costs associated with the removal, disposal and remediation of legacy AFFF systems.

Cleanup of contaminated infrastructure, wastewater and soil can represent a large share of transition expenditures.

Recent developments

Regulatory changes are accelerating the transition toward fluorine-free foams.

According to the European Commission, new restrictions on PFAS in firefighting foams took effect in October 2025, with phased transition timelines depending on application.

In the United States, the Federal Aviation Administration has approved fluorine-free foam use at Part 139 airports, aligning with Department of Defense specifications published in January 2023.

According to the American Association of Airport Executives, airports are actively transitioning to fluorine-free concentrates and expanding procurement programs.

Legislative funding has also supported adoption.

According to the International Association of Fire Fighters, US legislation has allocated $350 million to support airport foam replacement and cleanup, along with $30 million for vehicle modifications and related infrastructure updates.

Product development continues across multiple manufacturers.

For example, Fomtec introduced Enviro NEO in January 2026, an SFFF concentrate designed for petrochemical, oil and gas and marine applications, reflecting ongoing investment in fluorine-free formulations.

Regional insights

North America is one of the largest SFFF adoption regions, driven by airport compliance requirements, military transition programs and litigation exposure related to PFAS contamination.

Municipal fire departments and industrial operators are also incorporating fluorine-free foam into procurement planning.

Europe is progressing rapidly due to regulatory enforcement and environmental compliance frameworks.

Industrial operators, airports and municipal services are aligning procurement with regional PFAS restrictions and national phase-out schedules.

Asia Pacific presents strong growth potential due to expanding aviation infrastructure, industrial development and regulatory activity.

According to Airservices Australia, fluorine-free foams have already been deployed across Australian civilian airports, demonstrating early transition within the region.

The Middle East is seeing adoption primarily within petrochemical, marine and energy sectors, where large-scale fixed suppression systems require fluorine-free concentrates compatible with seawater and high hazard fuels.

Latin America and Africa remain emerging markets for SFFF adoption.

Uptake is concentrated in oil and gas, mining, ports and aviation sectors, where compliance with international insurance and operational standards is driving procurement decisions.

This was originally published in the March 2026 Edition of International Fire & Safety Journal. To read your FREE copy, click here.

From zero to Qmax: Jensen Hughes breaks down sprinkler tank sizing

Andrew Cowan, Senior Engineer at Jensen Hughes, explains what Qmax means in the context of BS EN 12845

In fire protection engineering, automatic sprinkler systems are fundamental to safeguarding both life and property. Their effectiveness stems from their ability to detect and control fires rapidly, containing fire growth until emergency responders arrive. To achieve this, two design factors are essential: water density and duration of discharge.

Water density is the volume of water applied to a given area, usually measured in millimetres per minute (mm/min) or litres per minute per square metre (l/min/m²) in the UK. It ensures sufficient water reaches the fire to absorb the heat, cool burning materials and prevent spread. If the density is too low, the water may evaporate before suppressing the fire, reducing the system’s effectiveness.

Equally important is the discharge duration – the length of time the system must maintain adequate flow. This ensures the fire remains under control until it is fully extinguished, either by the fire service or in a controlled burn-out. Insufficient duration risks re-ignition or uncontrolled spread after initial suppression.

Both density and duration are set out in BS EN 12845, the European standard for the design, installation and maintenance of fixed sprinkler systems. Within its hydraulic design requirements, one concept stands out: Qmax, the maximum water flow rate a system must deliver under the most favourable hydraulic conditions. Understanding Qmax is key to sizing an adequate stored water volume.

Methods of hydraulic calculation

To ensure reliable sprinkler performance, designers must conduct hydraulic calculations to confirm that the pipe network can deliver adequate flow and pressure to operating sprinklers. Under BS EN 12845, two calculation methods are permitted:

  1. Pre-calculated Method: This method is a solution where the pipework diameters are sized as per tables within BS EN 12845 up until a defined point on the sprinkler array. This is known as a design point. The pipe diameters from the design point back to the Installation Control Valve (ICV) are calculated to ensure the total pressure loss does not exceed 0.5 bar, except where static pressure, between the height of the highest sprinkler on the system and the design point in question can be accounted for. The pressure and flow requirements to be provided to the ICV are prescribed in the standard for the specific risk.
  2. Full Hydraulic Calculation Method: This method is required for high-hazard systems but also used where customised pipe sizing or water supplies are needed. The full calculation method requires designers to evaluate two operating scenarios:
  3. Most hydraulically unfavourable area: Usually farthest from the water supply, where maintaining pressure and flow is most difficult.
  4. Most hydraulically favourable area: Typically closest to the supply, where conditions are least demanding.

Factors considered

To establish pressure and flow requirements, the calculation must consider:

  • Pipe lengths/types and diameters
  • Elevation differences between sprinklers and the pump or tank
  • Friction losses in pipes, fittings and valves
  • Hazard classification density requirements
  • Application area
  • Minimum sprinkler operating pressure

Assumed Maximum Area of Operation (AMAO)

A critical element of hydraulic design is determining the Assumed Maximum Area of Operation (AMAO), which specifies the maximum number of sprinklers likely to operate during a fire. This value depends on the hazard classification and whether the system is wet or dry.

For instance, an Ordinary Hazard Group 3 wet system requires an operating area of 216 m², while the same occupancy with a dry valve necessitates a larger AMAO of 270 m². Designers should consult BS EN 12845 to confirm the correct AMAO for each scenario.

By defining the AMAO, designers ensure the system can handle the worst-case conditions for the specified hazard class. This area is used to model realistic fire scenarios and to correctly size pumps, pipework and water storage.

Tailored design based on actual fire compartment areas

Every fire protection project is unique and should be assessed according to its specific risk profile. While the AMAO provides a standard design reference, actual fire compartment sizes can be used if they are smaller and meet the required fire resistance for the hazard class.

This approach allows for a customised design, optimising sprinkler water demand, pump requirements and tank capacity. By basing calculations on the actual protected area rather than a generic maximum, designers can improve system efficiency without compromising compliance, provided the correct compartment fire resistance is maintained.

Fire pump curve and system demand

After identifying the most favourable and unfavourable demand points, the designer selects an appropriate fire pump that can satisfy both scenarios. This selection process involves analysing the pump curve, which graphically represents the relationship between pressure and flow for a specific pump.

An example of the pump curve and system demand points is illustrated below

The graph illustrates four key lines.

Black Line – 1: The system demand is derived from the pressure-flow relationship of the most favourable area of operation. It is drawn using a hydraulic quadratic formula. This equation helps draw a curve that simulates how the system responds when only the closest sprinklers operate. Since these require less pressure to achieve the required flow, this becomes a conservative estimate for maximum system capacity.

Orange Line – 2: The true pump performance curve. This line shows how the pump’s pressure output decreases as flow increases. Under BS EN 12845, the pump must provide at least 0.5 bar more pressure than what is needed at the most unfavourable point to accommodate design changes during installation.

Green Line – 3: This represents the pump curve plus static pressure. The static pressure comes from the height of water in the storage tank, which contributes additional force through gravity. It essentially reflects the total available pressure at the pump outlet, combining pump energy and gravitational pressure.

Blue Line – 4: This is the Qmax line.

Qmax

Once the system demand curve (Black Line – 1) intersects with the pump plus static pressure curve (Green Line – 3), the intersection point projects vertically to the x-axis. This vertical projection is known as Qmax – the maximum theoretical flow the system could deliver under the most favourable conditions.

In practical terms, Qmax represents the maximum flow demand the fire protection system must be able to supply. It reflects the worst-case scenario of flow in a sprinkler activation and forms the basis for water storage sizing.

Sizing the sprinkler tank

After Qmax is determined, the next step is to size the water storage tank. The volume of water required depends on both Qmax and the required duration of sprinkler operation, which again depends on the hazard class.

The designer would then coordinate with a sprinkler tank manufacturer to select a tank with an effective capacity that meets or exceeds this volume.

Conclusion

Understanding and calculating Qmax is a critical step in the hydraulic design of sprinkler systems governed by codes like BS EN 12845. By accurately determining Qmax, designers ensure that the system is capable of meeting the most demanding suppression scenarios.

Whether you’re a fire protection engineer, designer or building services consultant, understanding the principles behind Qmax gives you an understanding of how a sprinkler tank is sized.

At Jensen Hughes, our fire protection engineers apply these principles to various projects, supporting compliant and efficient sprinkler system designs tailored to each facility’s specific risk profile and operational requirements

This was originally published in the March 2026 Edition of International Fire & Safety Journal. To read your FREE copy, click here.

London Fire Brigade mental health absence costs reach £84m since 2021

Mental health absence and costs at the LFB

The London Fire Brigade (LFB) has recorded an estimated £84 million cost from sickness absence linked to mental health since 2021.

The London Assembly Fire Committee said in a letter published on 4 March that stress, anxiety and depression among LFB staff are now the leading cause of long-term sickness absence.

The Committee said firefighters routinely face traumatic incidents while carrying out their duties across the capital.

It said the growing mental health toll is affecting the wellbeing of those working within the brigade and contributing to rising absence costs.

What the Fire Committee asked the London Fire Commissioner to change

The letter called on the London Fire Commissioner to strengthen early intervention and improve how support is directed towards those most at risk.

The Committee said LFB has expanded its wellbeing support and taken steps to address stigma around seeking help.

It added that existing support remains largely generalised, despite clear differences in how mental health issues affect different roles within the brigade.

The Committee recommended greater use of internal mental health data so support can be targeted towards higher-risk roles.

It also called for adoption of the IGLOO framework, described as Individual, Group, Leader, Organisation, Outside.

The Committee said peer-to-peer support should also play a larger role in helping staff manage the impact of traumatic incidents.

Zack Polanski AM said: “Firefighters protect London every day.

“It is only right, they feel equally protected when it comes to their own wellbeing.

“While the LFB has made important progress in tackling stigma and expanding support, there is more that can be done to tailor provision, strengthen peer networks and ensure help reaches those who need it most.

“Targeted, preventative support will be critical to building a resilient Fire Brigade fit for the future.

“A mentally healthy Brigade is fundamental to serving London effectively.”

The Committee’s letter sets out its recommendations for how LFB should strengthen early support and use available data to guide future provision.

Executive summary: Wellbeing of London’s firefighters letter

The London Assembly Fire Committee has written to the London Fire Commissioner raising concerns about the growing impact of mental health issues on staff within the London Fire Brigade (LFB), and recommending changes to how support is delivered.

The Committee states that stress, anxiety and depression among firefighters have risen to the point where they are now the most common reason for staff being absent from work for more than two weeks.

While acknowledging that mental health provision has improved across fire services in recent decades and that LFB now has a comprehensive wellbeing strategy and mental health policy, the Committee says further improvements are possible, particularly in how support is targeted and structured.

The letter also links wellbeing directly to operational capability and organisational cost. Since 2021, sickness absence across LFB has been estimated to cost around £84 million.

The Committee therefore sets out two main recommendations: using data more actively to tailor mental health support to higher-risk roles, and strengthening peer-to-peer support within the brigade.

Key quotes

Zack Polanski AM, Chair of the London Assembly Fire Committee, wrote that the increase in mental health absence warranted closer examination: “These are concerning figures which the London Assembly Fire Committee felt warranted investigation.”

Deputy Commissioner Spencer Sutcliff highlighted the economic case for preventative mental health support: “Every pound spent on prevention for mental health [issues] will give you a £4 return.”

Evidence presented to the Committee also pointed to demand for more training among firefighters. Dr Carolina Campodonico, who is leading research commissioned by the Fire Brigades Union, told the Committee: “More than three-quarters of firefighters said that they would be interested in more mental health training.”

The Committee’s letter requests a formal response from the London Fire Commissioner by 15 April 2026.

ASFP working group outlines next steps for External Envelope guidance

External envelope work begins with TG14 first meeting

The first meeting of TG14 – ‘Passive Fire Protection and the External Envelope’ brought together specialists from multiple disciplines, according to a blog post by Paul McSoley shared by the Association for Specialist Fire Protection (ASFP).

Participants included designers and engineers, facade experts, penetration seals, cavity barrier and fixing specialists, plus testing, certification and installation representatives.

The day opened with a call from Mike Ward, who said the next logical step towards industry-wide competence in passive fire protection sits within the void between the faced and the building structure.

Discussion centred on definitions, typologies and testing interfaces

Following work on the ASFP Green Book – fire doors and the ASFP Clear Book – fire resistant glazing, Hannah Mansell told the group that facades are a natural area to simplify and that a similar approach should be applied to external systems as the Design Guide for internal passive fire protection nears completion.

The discussion was framed around how a facade should be defined and what passive fire protection means in that context.

Mansell said: “While I recognise I am not a facade expert, part of my objective for the first session was to break down facades into typologies.

“For example, is the facade external to the building structure, or is it recessed within it?

“If so, what are the next natural steps in identifying the principles of each one?

“To go even further, how many common approaches of facade are there in each location, and how do we determine the approaches for how passive fire protection is applied from a cavity barrier, a door, a window or even a flue discharge?

“What about the wall junctions from the internal compartments that separate room space, and what type of building safety risks could they contain?”

McSoley wrote that the ASFP Purple Book – fire-resisting partitions approach to internal substrates may provide comparators for the work on external substrates.

He wrote that passive fire protection systems are either applied as a weight to the wall substrate or supported from the slab, with installation usually specific to partition-type systems or rigid structures.

He added that the difference with external walls is that they become a non-standard supporting construction, and that testing and determining interfaces will be a key part of TG14’s work.

Next meeting to compile feedback and map facade types

McSoley wrote that the group’s next steps will involve breaking system types down and applying the colour book approach to external substrates.

He added that the next meeting should be better placed to compile feedback from the day and identify facade types and common interface principles that form a whole system.

Breaching fire compartmentation: Does MHCLG’s fibre cabling consultation risk a free for all?

Graham Oliphant, Managing Director of Harmony Fire’s consultancy business, examines MHCLG proposals on fibre cabling approvals and the fire compartmentation risks

A flurry of life safety consultations have been launched since the start of the year, including from the BSI, the Scottish Government and from The Ministry of Housing, Communities and Local Government (MHCLG).

It was one such consultation, from the MHCLG and published on 27 January, that particularly caught my eye, entitled ‘Improving proportionality and safety outcomes in building control: telecommunications work’.

In summary, this consultation seeks views from industry on proposals to streamline building control procedural requirements within higher risk building settings for the installation of fibre optic cabling and mobile masts.

In the case of fibre optic infrastructure, the open call also seeks feedback on potential building control approval changes for non-higher-risk buildings too.

The consultation considers ‘proposals to dispense with procedural requirements of building regulations for….building work related to the drilling of holes through internal fire-resisting walls for fibre optic cabling and work related to the installation and repair of mobile communications masts.

For these activities, the current building control procedural requirements may be unreasonable and disproportionate and can direct regulatory resources away from the types of building work that carry higher risk, such as new builds and remediation projects.’

Context in building control

The background to this consultation will be familiar to anyone in the housing sector since the introduction of the Building Safety Regulator (BSR).

We need not reopen the arguments going back and forth about the BSR’s role and impact on a sector that repeatedly and fatally has shown itself systemically incapable of consistently delivering safe buildings.

But this consultation makes it clear that greater pragmatism and proportionality may be required to facilitate wider and faster broadband roll out across the nation, as well as to support the BSR on its quest for consistent delivery to agreed service level agreements.

It’s reasonable to view fibre optic cables as a government test case for the BSR as it grapples with resourcing and talent challenges around the Gateway process set up post-Grenfell Tower disaster to ensure a mass casualty event can never happen again within our buildings.

Remediation work currently falls within the Gateway process and the backlog at the BSR continues to grow as work to make buildings safe for residents is regularly delayed beyond the 8-week Gateway 2 decision deadline.

The new leadership team at the BSR has indicated it’s actively looking at remediation activity with an announcement due imminently on a more streamlined process.

So why did this particular public consultation grab my attention? Well with unbelievable timing and coincidence, a colleague had just recently sent me an image with rolls of newly printed labels for a fire compartmentation project Harmony Fire is delivering in Scotland.

Staring out from the screen on my phone I’d just read ‘Fire Compartment Line – Do not alter, cut or breach this fire seal/compartment without permission.

Any damages must be reported and repaired immediately.’ We actually used this very image in our LinkedIn post highlighting the launch of the consultation.

The issue of maintaining fire compartmentation integrity is a constant challenge for everyone working in the life safety sector.

We have directly witnessed far too many egregious fire compartmentation breaches that render this front-line defence against the spread of smoke and fire ineffective and dangerous.

Compartmentation is a critical building safety feature, designed to slow the spread of fire and buy time for residents and emergency services to respond.

A combination of fire-resistant walls and ceilings, fire doors, fire stopping and cavity barriers all work together to create a sealed structure, and a failure in any one element dramatically escalates risk to life.

Training and site discipline 

Education and enforcement around fire compartmentation is not consistent and this is why Harmony Fire has worked in partnership with our customers to develop a new behavioural and cultural approach to the issue of fire compartmentation integrity.

Moving the discussion away from tick-box compliance to real-life failure consequences is our starting point.

Maintaining the integrity of ‘the box’ saves lives and it’s therefore everyone’s responsibility to be vigilant, and to protect and challenge, if necessary, any activities that could compromise the system.

An all-encompassing education programme on the importance of compartmentation delivered to the landlord, residents, building managers, maintenance teams, suppliers, subcontractors and anyone regularly visiting sites means more focused eyes and greater vigilance.

By adopting the ‘hot works’ model used for those contractors working at height and using naked flames on buildings, a new permission-based authorisation system ensures that nobody is permitted to work in a way that could compromise fire compartmentation without prior approval and oversight.

The stickers of course represent the final ‘analogue’, but highly visible, stage of this new behavioural regime, reminding everyone of their joint responsibility for vigilance and urging action if something doesn’t look right.

Our vision to further evolve this regime with customers sees the increasing use of technology and digital accountability, through digitally locked BIM assets and a dedicated Permit to Breach (PTB) process incorporated into the existing Safe Systems of Work (SSoF) protocols.

Utilising PTBs underscores the high-risk nature of compartmentation breaches for our customers’ supply chains and wraps a robust legal framework around the compliant remediation of any work before a PTB can be closed and payments authorised.

The inescapable challenge that all parties to this conversation face is how to support sectors that bring services, like faster broadband, to communities that can drive prosperity, social mobility and productivity, while simultaneously protecting those same communities from the unintended consequences of policy decisions that may be a retrograde life safety step.

Compliance expectations remain

The consultation makes it clear that the drilling of holes in fire compartmentation to accommodate the installation of fibre optic cabling must still comply with requirements under the Building Regulations 2010 and for higher-risk buildings under Part 4 of the Building Safety Act 2022.

However, there is a significant risk that needs to be carefully discussed and considered around the optics of what this potential change may bring from a behavioural perspective.

Under the current legislative regime, anyone seeking to compromise fire compartmentation must submit an application via the BSR’s Gateway process.

This reflects the life safety significance of this activity and focuses applicants on the risks and the expected standards and quality of remedial activity required.

Today, we regularly see the consequences of people not adhering to these existing strict regulations, with genuine instances of compartmentation breaches within weeks of our own project completions.

In this context, we have serious concerns around the perception of a downgrade, or watering down, of the regulations associated with fibre optic cabling installation.

And let’s be clear in terms of behavioural response in a real-world application, the expectation of ‘mission creep’ is high.

If we can drill holes for fibre optic cabling, then surely there’s little difference for that coaxial or POE cable, right?

If it becomes a routine activity to drill holes in fire compartmentation and this is what people regularly witness up and down the country, do we not risk undermining all the hard work and the behavioural changes we have set in train to underscore the importance of fire compartmentation integrity?

Practical options and mitigations

The consultation process gives every audience the chance to have their say, and we should be grateful that views are being sought for this highly significant and consequential change.

But there are already measures and actions that can be taken today to make this less of a binary decision.

Across many of our compartmentation projects, we have introduced a simple future proofing measure that eliminates the need for future drilling.

By specifying firestop sleeves into our compartmentation designs, this provides a fully compliant and safe way for cables to be installed without the need for any additional interventions.

The greater adoption of asset-based technology solutions and existing safe working protocols linked to contractual payment terms offer an alternative vision.

Balancing demands, proportionality and appropriateness characterise this latest consultation process.

It’s vitally important that as many voices, from as many sides of this debate, are heard before the closing date on the 24 March.

This will ensure changes do not bring unintended consequences that ultimately set back resident life safety outcomes.

This move feels like a retrograde step and risks behavioural change in the wrong direction.

Let’s hope that diverse voices across the sector provide their own insights into how we can best balance the demand, while understanding our number one priority must remain focused on the safety and security of families relying on the absolute integrity of fire compartmentation.

Red Sea Global Fire Commissioner joins Leaders in Fire & Safety Conference Advisory Panel

International Fire and Safety Journal (IFSJ) is delighted to announce the appointment of Khalid Almandil to its prestigious IFSJ Leaders Advisory Panel for the 2026 IFSJ Leaders in Fire & Safety Conference.

Almandil brings over 20 years of leadership experience in fire life safety and emergency response across multiple industries, including construction, oil & gas and real estate. He currently serves as the Operational General Manager of Red Sea Fire & Rescue Teams Company and as Fire Commissioner at Red Sea Global.

In his leadership roles, Almandil has demonstrated expertise in strategic planning, team leadership and driving operational success to achieve corporate objectives. He is a certified Project Management Professional (PMP) and a Consultant-grade member of the Saudi Council of Engineers.

He also holds a master’s degree in engineering and has completed extensive leadership training at prestigious institutions, including the Royal Military Academy (UK), Wharton Business School (US) and the Justice Institute of British Columbia (Canada). His appointment strengthens IFSJ’s mission to unite senior leaders and innovators shaping the future of fire safety and emergency response worldwide.

About the IFSJ Leaders in Fire & Safety Conference

Taking place on May 7 at the Grosvenor House Hotel in Dubai, the IFSJ Leaders in Fire and Safety Conference is a landmark global event bringing together senior professionals, policymakers and innovators from across the fire safety sector.

The event will feature high-level keynote presentations, expert panel discussions, interactive workshops and unparalleled networking opportunities, all designed to foster collaboration, share best practice and advance fire safety standards internationally.

Participants will have the opportunity to engage with leading voices in engineering, regulation, emergency services, and safety management, exploring emerging challenges and solutions in fire prevention, preparedness and response.

Register now: To secure your place at the IFSJ Leaders in Fire and Safety Summit, visit https://ifsjleadersinfireandsafety.com/#.