Hydrant Boxes: Essential Components for Building Safety

Fire hose cabinets are dedicated enclosures designed to house firefighting equipment such as discharge hoses, water couplings, nozzles, and other accessories. This equipment connects to a water supply network, enabling rapid intervention in an emergency.

Their primary role is to provide immediate access to water in the event of a fire so the blaze can be extinguished before spreading dangerously. Fire hose cabinets are designed for use by non‑specialists in firefighting, making them easy to operate.

Fire hose cabinets are positioned strategically within buildings, in easily accessible areas such as corridors or escape routes, to ensure a quick response. They must be clearly marked and easy to open, in line with applicable regulations.

Mandatory in buildings: where and when are they required?

The installation of fire hose cabinets is governed in detail by fire safety codes such as Code P118/2 – 2013, which sets the technical requirements for building fire protection.

By law, fire hose cabinets are mandatory in the following types of buildings and structures:

• Public buildings: Educational institutions (schools, universities), hospitals, government buildings, and other public spaces must be equipped with fire hose cabinets.
• High‑rise residential buildings: Apartment blocks higher than ground floor plus four storeys (G+4) must have an internal hydrant system on every level to ensure rapid access to firefighting equipment.
• Shopping centers and office buildings: These spaces carry an increased fire risk due to high occupancy and extensive use of electrical equipment, making indoor hydrants mandatory.
• Warehouses and industrial facilities: In buildings used for manufacturing or storing combustible materials, an indoor hydrant system is essential to prevent rapid fire spread.

Regulations and standards

The rules governing the installation and use of fire hose cabinets are based on European and national standards. Key regulations include:

• Code P118/2 – 2013: Details fire safety requirements for buildings, specifying where indoor hydrants are mandatory, as well as their number and placement.
• Law no. 307/2006 on fire protection: Sets out general measures for fire prevention and firefighting across all building types, requiring mandatory fire protection equipment, including hydrants.
• European standards EN 671‑1 and EN 671‑2: Define technical specifications for indoor hydrant systems. EN 671‑1 covers systems with semi‑rigid hose (hose reels), while EN 671‑2 covers systems with lay‑flat hose. Each component of a hydrant system must be individually certified under these standards.

According to these specifications, fire hose cabinets vary by the hose type used:

• Hydrants with lay‑flat hose (EN 671‑2): Intended for buildings where water pressure may vary; the foldable hose offers increased flexibility.
• Hydrants with semi‑rigid hose (EN 671‑1): Used in buildings with constant water pressure and preferred where rapid response is critical.

Technical specifications of fire hose cabinets

Fire hose cabinets, regardless of system type, are engineered to meet essential technical requirements for effective operation during a fire. Key aspects include:

• Materials and dimensions: Cabinets are typically made of steel or other materials resistant to corrosion and fire. Dimensions vary with the hose type and the building specifications.
• Fire hoses: Indoor hydrant systems use either lay‑flat or semi‑rigid hoses. Common sizes include:
• Lay‑flat hose DN 25 and DN 52 mm;
• Semi‑rigid hose DN 19, DN 25, and DN 33 mm.
• Water pressure and flow: Indoor hydrant systems must provide a working pressure between 2 and 7 bar. Burst pressure must be at least 2.5 times the working pressure. Minimum flow must be sufficient to extinguish a localized fire quickly.

System components also include a metal hose reel drum, certified couplings, and shut‑off valves. These are critical components that must be properly maintained and inspected regularly to ensure optimal performance in an emergency.

Maintenance and inspection requirements

Regular maintenance of indoor hydrant systems is essential to ensure they operate within specified parameters. Under the law, periodic inspections and checks must be carried out by authorized companies, in accordance with Code P118/2 – 2013.

Main maintenance obligations include:

• Weekly checks: Under P118, indoor hydrants must be inspected at least weekly, and hoses checked for visible cracks or damage.
• Pressure testing: Every five years, hoses must be tested at maximum working pressure to verify integrity. Any sign of wear or defect must be addressed immediately and the hose replaced.
• Accessibility: Fire hose cabinets must not be blocked or concealed by objects that could hinder quick access during a fire.

Product certification and compliance

To be legally marketed and used, a hydrant system must be certified to the applicable European standards. Each component (hoses, valves, reels) must undergo rigorous testing in an accredited laboratory. After testing, the system receives a certificate of conformity confirming that it meets the technical and safety requirements set by law.

Uncertified cabinets or non‑compliant components pose a serious risk to building and occupant safety. Beneficiaries should therefore verify each product’s documentation, ensure labels and markings match the certificates of conformity, and request the manufacturer’s technical data sheets.

Risks and consequences of using non‑compliant systems

Using a non‑compliant hydrant system can have serious consequences, including:

• Risk of an uncontrolled fire: Uncertified or inferior hoses may fail during use, leading to loss of control over the fire.
• Legal penalties: Buildings that do not comply with fire safety legislation may face fines or even closure.
• Property damage and loss of life: A nonfunctional or ineffective hydrant system can result in significant losses in a fire, including human casualties.

Conclusions

Fire hose cabinets are a vital component of a building’s fire safety system. By complying with applicable codes and standards—and through regular maintenance and verification of component conformity—these systems make a significant contribution to preventing major fires and protecting life and property. Investing in a certified, properly maintained indoor hydrant system is essential for any commercial, industrial, or residential building owner.