How to Detect Fuel Leaks Early in Storage Tanks, Trenches and Pipeline Areas
Fuel leakage is one of the most serious hidden risks in industrial facilities. In fuel storage areas, pipeline routes, trenches and equipment zones, a small liquid hydrocarbon leak may not be visible immediately. By the time fuel is seen on the ground or detected by smell, the leakage may already have spread along the floor, trench or containment area.
For facility owners, fuel leakage is not only a maintenance problem. It can create fire risk, environmental contamination, production downtime, cleaning cost and safety compliance concerns. This is especially important in locations where gasoline, diesel fuel, jet fuel or other hydrocarbon liquids are stored, transferred or distributed through long pipe routes.
To detect fuel leakage earlier, many projects require a continuous monitoring method instead of relying only on manual inspection. This is where a liquid hydrocarbon fuel sensing cable becomes valuable.
Fuel leaks often occur in areas that are difficult to inspect continuously. Typical risk areas include storage tank bases, pipe trenches, fuel transfer lines, cable routes, grooves and double-contained equipment zones.
In these areas, the leakage point may be uncertain. A leak may happen at a flange, valve, joint, pipe connection, tank bottom or low point inside a trench. If only point-type sensors are used, some areas may remain uncovered.
A distributed sensing cable solves this problem by monitoring along the cable length. The sensing cable can be routed along the area where leakage may occur, helping the system detect fuel presence at different positions along the protected route.
Many fuel storage and pipeline areas are not completely dry. Outdoor tank farms, underground trenches, generator fuel areas and industrial pipe corridors may be exposed to rainwater, wash water, condensation or residual water.
If a leak detection system responds to water, the site may experience unwanted alarms. Frequent unwanted alarms can reduce operator confidence and increase unnecessary maintenance work.
The ANWETECH AT-LS102 liquid hydrocarbon fuel sensing cable is designed to detect liquid hydrocarbon fuel while remaining non-responsive to water. This makes it suitable for environments where water may be present but the real monitoring target is fuel leakage.
In practical terms, this means the system is designed to focus on hydrocarbon fuel detection instead of reacting to ordinary water exposure.
The ANWETECH AT-LS102 is a liquid hydrocarbon fuel sensing cable designed for distributed leak detection applications. It detects the presence of liquid hydrocarbon fuel anywhere along the cable.
When the sensing cable is used together with a suitable leak detection controller and location controller, the system can trigger an alarm and indicate the leak position after liquid fuel is detected.
A typical working logic can be described as:
Fuel leakage occurs
→ AT-LS102 sensing cable contacts liquid hydrocarbon fuel
→ Leak detection controller receives the alarm signal
→ Location controller supports leak position indication
→ Maintenance team can respond to the affected area more quickly
This makes the system suitable for projects where both alarm notification and leak location support are important.
Fuel storage tanks are one of the most important application areas for hydrocarbon leak detection. Leakage may occur around the tank base, pipeline connection, valve area or containment zone. A sensing cable can be installed around selected risk areas to support early detection before the leak becomes larger.
Fuel trenches and grooves can hide leakage from direct view. Once fuel enters a trench, it may spread along the lowest point and become difficult to locate by visual inspection. Installing a sensing cable inside or along the trench can help detect fuel presence earlier.
Long pipeline routes are difficult to protect with only point sensors. A distributed fuel sensing cable can be routed along the pipe path, helping monitor leakage risks across a longer area. This is useful for fuel transfer lines, industrial pipe corridors and pipeline sections where leakage location is uncertain.
Some facilities have cable routes, equipment bases or double-contained areas where fuel leakage may collect at low points. AT-LS102 can be used in these areas as part of a broader liquid hydrocarbon leak monitoring design.
The AT-LS102 datasheet provides standard response time examples at 68°F / 20°C for representative hydrocarbon liquids.
| Representative Liquid | Standard Response Time at 68°F / 20°C |
|---|---|
| Gasoline | 12 minutes |
| #1 Diesel Fuel | 60 minutes |
| #2 Diesel Fuel | 120 minutes |
| JP5 Jet Propulsion Fuel | 70 minutes |
| JP8 Jet Propulsion Fuel | 50 minutes |
| Jet-A Jet Propulsion Fuel | 50 minutes |
| Xylene | 20 minutes |
Response time may be affected by liquid type and operating temperature. For other fuels or site conditions, project engineers should confirm the application requirements before final system design.
Industrial leak detection areas may include mechanical stress, chemical exposure, moisture and harsh installation conditions. AT-LS102 is designed with strong mechanical properties and chemical resistance for demanding industrial environments.
The cable uses radiation crosslinking technology and conductive polymer technology. Its structure includes sensing lines, an alarm signal line and a continuous detection line. The cable core is encapsulated by a conductive polymer sheath and protected by an external fluoropolymer braided layer.
This structure supports stable operation in industrial hydrocarbon leak monitoring applications.
| Item | Specification |
| Cable Diameter | 0.28 in / 7 mm nominal |
| Cable Diameter with Connector | 0.52 in / 13 mm nominal |
| Cable Weight | 2.4 lb / 1.1 kg for 50 ft / 15 m length |
| Operating Temperature Range | -4°F to 140°F / -20°C to 60°C |
| Tension Limit | No more than 50 lb / 22.7 kg |
| Minimum Bending Radius | 2 in / 50 mm |
| Pressure Alarm Condition | Alarm is triggered when load exceeds 20 lb / 9 kg per linear inch at 68°F / 20°C |
| After Fuel Contact | The sensing cable must be replaced after contact with hydrocarbon liquid |
For chemical resistance, the cable remains in normal use after 7 days of exposure to 10% sulfuric acid, 10% hydrochloric acid, 10% nitric acid and 10% sodium hydroxide under ASTM D543 test conditions at 73°F / 23°C.
For water resistance, the sensing line leakage is less than 10 μA when immersed in salt water for 90 days. This helps support use in industrial environments where moisture or water exposure may occur.
Correct installation is important for stable leak detection performance. During cable routing, the sensing cable should avoid excessive tension, sharp bending and continuous mechanical compression.
The minimum bending radius is 50 mm, and the tension limit should not exceed 22.7 kg. The cable should be installed according to project design requirements and commissioned together with the matching leak detection controller and location controller before being placed into service.
It is also important to note that the sensing cable should be replaced after contact with hydrocarbon liquid. This should be considered during maintenance planning and project operation procedures.
ANWETECH AT-LS102 provides a practical sensing cable solution for industrial liquid hydrocarbon fuel leak monitoring. It is suitable for areas where fuel leakage may occur over a wider route, such as storage tanks, trenches, pipelines and cable routes.
Its main advantages include distributed sensing along the full cable length, non-water-reactive design, flexible installation options, chemical resistance and support for alarm and leak position indication when used with suitable controllers.
For fuel storage facilities, industrial plants, fuel transfer systems and pipeline monitoring projects, AT-LS102 can help improve early leak detection and support faster maintenance response.
