Every year, thousands of liters of water spill into facilities worldwide, causing extensive property damage, operational disruptions, and significant financial burdens.
In many cases, the cause is freezing temperatures and improper maintenance leading to broken auxiliary drains in dry and pre-action sprinkler systems.
These floods not only result in costly repairs but also compromise the reliability of fire protection systems, leaving facilities vulnerable to further risks.
How can the international fire protection industry address this issue?
Whether you are a fire protection contractor, system designer, or supplier, the following three strategies can help safeguard systems against flood damage caused by broken auxiliary drains.
Pre-action and dry fire sprinkler systems are designed for areas exposed to freezing temperatures.
These systems rely on auxiliary drains—also referred to as low-point drains or drum drips—to collect condensation that forms within the pipes.
Without regular maintenance, water trapped in these drains can freeze, causing cracks in valves or ruptures in the pipes and fittings.
When an auxiliary drain breaks, it compromises the system’s pressure and triggers the dry valve to release water.
This pressurized flow fills the pipes and spills out through the broken drain until someone notices and shuts off the supply.
By then, significant flooding and damage may already have occurred, undermining the system’s ability to function effectively in an emergency and possibly causing a slip hazard.
Beyond the immediate flood damage, facilities may face downtime, operational delays, and costly tenant interruptions.
Proactively addressing these vulnerabilities is critical for managing the risk of accidental system activation.
The most effective way to eliminate the risk of freezing and flood damage is to automate the process of draining auxiliary drains.
Automatic auxiliary drains housed in energy-efficient heated cabinets maintain an internal temperature above 4 degrees Celsius, preventing freezing entirely.
Additionally, these systems manage the draining process without requiring manual intervention.
AGF’s Model 5450 is a semi-automatic auxiliary drain equipped with an ancillary trap.
Once the drain fills to 80% capacity, excess water flows into the trap and seeps out through a connected drainpipe.
The Model 5500, a fully automatic version, goes a step further by integrating remote control capabilities.
In semi-automatic mode, the system alerts personnel when the drain is nearing capacity, allowing them to empty it remotely via a building management system (BMS).
In fully automatic mode, the drain empties itself as soon as it detects that it is full, requiring no human intervention.
Both options eliminate the need for manual inspections, ensuring that freezing and subsequent flooding are no longer a concern.
These solutions are ideal for large facilities, multi-site operations, or remote locations, as they streamline maintenance and improve system reliability.
Preventing auxiliary drains from freezing and breaking is critical for maintaining system integrity.
Drains must be emptied before freezing temperatures arrive.
However, even one overlooked drain containing a small amount of water can result in a catastrophic failure.
To enhance maintenance processes, fire protection professionals can install water detector alarms on existing auxiliary drains.
AGF’s Model 5100ALBV water detector alarm offers a simple and effective solution.
These alarms detect the presence of water in the drain and send visual, audio, or remote alerts, enabling timely action.
With clear notifications about which drains require attention, maintenance teams can efficiently prepare systems for winter conditions.
Water detector alarms are particularly beneficial for facilities with extensive piping networks.
Instead of manually inspecting each drain, maintenance personnel can rely on alarms to pinpoint specific locations that need attention.
This not only reduces the risk of human error but also ensures that no drain is missed during routine inspections.
Consider this scenario: an auxiliary drain freezes and breaks, spilling 190 to 265 liters of water per minute, depending on the system’s pressure.
If it takes ten minutes to locate and shut off the supply, 1,900 to 2,650 liters of water could flood the facility.
The cleanup and repair costs from such an event can be staggering.
For a faction of the cost of repairs, AGF’s Model 5900 Flood Eliminator can be installed at the inlet of each auxiliary drain.
This device senses the sudden pressurized flow caused by a broken auxiliary drain and automatically restricts it, allowing only 250 milliliters of water per minute to pass through.
Over ten minutes, this amounts to less than three liters of water—a dramatic reduction compared to thousands of liters that would otherwise spill out.
This affordable and easy-to-retrofit device ensures that any issues with auxiliary drains are manageable without causing extensive property damage or compromising the system.
By limiting the impact of a drain failure, the Flood Eliminator provides a valuable layer of protection for facilities of all sizes.
Flooding caused by broken auxiliary drains poses a significant risk for facility damage worldwide.
Beyond the financial burden, such incidents undermine the perception of systems designed to save lives and protect assets.
With today’s technology, the international fire protection industry has the tools to address this challenge.
From automated auxiliary drains to flood preventing fail-safe devices, there are solutions for every budget and application.
Fire protection contractors, system designers, and facility operators should assess their systems and implement the best options to safeguard against flooding and ensure optimal performance.
Proactively addressing these risks not only prevents costly damage but also reinforces confidence in the fire protection systems that safeguard lives and property.
As the industry continues to evolve, embracing these solutions will be key to maintaining safety standards and meeting the demands of an ever-changing world.
For more information about auxiliary drain solutions or to find a distributor in your area, visit AGF Manufacturing’s website, www.AGFMFG.com.
Together, we can help you stop the flood before it starts.
