FM Global stands apart among commercial insurers because it focuses on preventing losses rather than simply paying claims. Through its testing and certification arm, FM Approvals, the organization defines performance standards that help facility owners detect risk earlier, limit damage, and keep critical operations running. One of the most important of these standards is FM7745, a performance-based standard that addresses leakage of water and hydrocarbons inside buildings. The intent is straightforward but powerful: identify leaks quickly, communicate that information to building management systems, and, when appropriate, trigger automatic responses that stop the release before it escalates into fire, environmental damage, or extended downtime.
FM7745 applies across an unusually wide range of industries because hydrocarbons and water are present in so many mission-critical systems. Hospitals depend on emergency generators, day tanks, fuel conditioning skids, and extensive piping networks that often run above ceilings or below floors. Data centers rely on large backup power systems with stored diesel fuel, transfer pumps, and distribution piping that must operate flawlessly under emergency conditions. Commercial buildings and manufacturing facilities introduce additional exposure through boilers, fuel-fired equipment, bulk storage vessels, underground piping, and mechanical rooms with dense concentrations of utilities. FM7745 is designed to verify that leak detection systems used in these environments perform reliably under real-world conditions, including sensitivity to small leaks, resistance to false alarms, and compatibility with automated controls.
Meeting FM7745 requirements means more than simply sensing the presence of liquid. Approved systems must demonstrate repeatable detection of both water and refined hydrocarbons, predictable response times, and stable operation when integrated into supervisory control or building automation platforms. The standard places emphasis on early warning rather than catastrophic failure, because FM Global recognizes that a slow, undetected leak often causes more damage over time than a dramatic single event. Early detection allows facility teams to correct issues while systems remain operational and before fuel vapors, corrosion, or environmental contamination create secondary hazards.
This is the operating philosophy behind Naftosense, a company that originated in demanding oil and gas environments where leaks rarely announce themselves loudly and conditions are rarely forgiving. Drawing on that background, Naftosense engineered an FM7745-approved leak detection system specifically for FM Global-insured facilities that need precision without compromise. The system scales smoothly from a single sensing point protecting a day tank or generator enclosure to expansive, distributed networks that run through long pipe corridors, containment zones, and equipment rooms. Throughout that scaling process, the design maintains the same priorities that governed its industrial roots: rapid response, mechanical durability, and consistent accuracy.
At the heart of the Naftosense system is a rope-style sensing element that behaves very differently from point sensors or float-based probes. Instead of waiting for liquid to pool at a single location, the rope sensor monitors extended linear paths where leaks are most likely to occur. When refined fuel contacts the sensing element, the system registers the change almost immediately. In controlled testing and real installations, it can detect extremely small volumes of refined hydrocarbons in under 30 seconds. That response time matters, because even modest diesel or fuel oil leaks can spread invisibly along floors, cable trays, or pipe racks before anyone notices an odor or visible sheen.
Accuracy alone does not satisfy FM7745 requirements if it comes at the cost of operational nuisance, and this is where system design becomes critical. Naftosense sensors are engineered to resist false alarms caused by humidity, condensation, cleaning solutions, or transient environmental changes. The sensing element focuses on the chemical signature of refined fuels rather than general conductivity or moisture, which allows facilities to run the system continuously without constant recalibration or alarm fatigue. That stability is essential in healthcare, data center, and manufacturing settings where alarms trigger formal response procedures.
Integration with building management and control systems further strengthens the value of an FM7745-approved solution. When the Naftosense controller detects a leak, it can immediately report the event to a central monitoring platform, providing clear location data that guides maintenance teams directly to the source. In configurations that include actuated valves, the system can also initiate rapid isolation of the affected section, limiting the amount of fuel released and reducing cleanup costs. This coordinated response aligns closely with FM Global’s loss prevention model, which favors fast, automated intervention backed by human oversight.
Long-term reliability also plays a role in risk management and return on investment. Naftosense uses cleanable, reusable rope sensors that return to service after remediation rather than requiring disposal and replacement. That approach reduces lifecycle costs and avoids the gaps in protection that often occur when consumable sensors are temporarily out of stock or overlooked during maintenance. A 10-year factory warranty across the entire leak detection system reinforces confidence that the equipment will perform as intended over the long operating life expected in insured facilities.
For facility owners and risk managers, the practical benefits of an FM7745-approved Naftosense installation are easy to quantify. Faster leak detection reduces secondary damage to structures, electrical systems, and finished spaces. Early intervention minimizes environmental exposure and fire risk associated with flammable fuels. Clear communication with building systems supports documented compliance and simplifies inspections. Over time, these outcomes help FM Global-insured clients demonstrate strong loss prevention practices, protect their staff and occupants, and potentially reduce insurance premiums tied to verified risk reduction.
In an era when facilities are expected to operate continuously and safely under increasing scrutiny, FM7745 sets a meaningful benchmark for leak detection performance. Naftosense meets that benchmark with a system built on industrial experience, engineered sensitivity, and practical durability, delivering early warning where it matters most and turning leak detection from a reactive safeguard into an active component of facility resilience.