Patented technology exclusive to Sunfront with a 30-year warranty.
This is a structure that incorporates sensors into the gap between the inner pipe of the double-shell piping and the outer shell pipe. This technology allows for pinpoint detection of leaks from external water and internal fuel oil, enabling repairs to the faulty areas before any actual damage occurs. Patent: No. 4421711, Utility Model: No. 3183085, Patent Application: 2014-235598, Patent Application: 2015-115624 - Double Piping Structure Utility Model: No. 3195379, Patent Application: 2014-176033, Utility Model Application: 2014-005777 - Piping Structure ■ Single Shell Piping Resin piping is developed for the transportation of fuels such as petroleum products. It is also suitable for organic solvents and achieves high hydrocarbon durability. ■ Double Shell Piping This is a piping structure that places an outer shell pipe over the inner shell pipe (single shell piping). By doubling the piping, the risk of fuel oil leakage (environmental pollution) can be dramatically reduced, making it suitable for suction pipes and oil supply pipes that serve as pathways for fuel oil. *For more details, please contact us or download the PDF materials for review.
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■Regarding Free Underground Tank Leak Testing If a high-precision oil level gauge is installed in the tank and functions effectively as a constant monitoring device, and if the tank is installed within a tank room or has an FRP inner lining, then leak testing of the tank is not required. However, leak testing of the piping is necessary. ■Regarding Free Underground Piping Inspection By installing resin double-walled piping equipped with sensors that detect minor leaks of hazardous substances, constant monitoring can be achieved, and inspection of the piping is also not required. *This corresponds to the provisions described in Article 62-5-3, Paragraph 1, and Notification Article 71-2, Paragraph 2, which state that measures have been taken to detect minor leaks of hazardous substances (through the installation of high-sensitivity sensors) and to prevent the diffusion of such leaks (through resin double-walled piping). ■Regarding Replacement from Steel Pipes to Resin Piping Resin piping has the advantage of excellent mechanical properties (such as elongation and bending), as well as superior seismic resistance and corrosion resistance, eliminating the need for anti-corrosion measures. On the other hand, externally coated steel pipes have high strength but are inferior in terms of elongation and bending, requiring welding joints and anti-corrosion measures for cut pipe sections.
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Currently, environmental destruction due to global warming is progressing on a global scale. Amidst this, in our country, leakage accidents have occurred at aging hazardous material storage facilities in various regions, and environmental destruction caused by soil contamination has become a serious social issue. Additionally, due to amendments to the Fire Service Act regarding underground storage tanks, leakage prevention measures have been made mandatory. The government is also taking proactive measures, such as partially subsidizing soil contamination environmental conservation projects at fueling facilities, but soil conservation measures must be addressed as a problem that requires cooperation between the public and private sectors. Our company is enhancing related products for leakage prevention measures, focusing on underground tanks and piping, so that owners of hazardous material storage facilities can operate their businesses with peace of mind. We hope to be of assistance to everyone with our many years of rich experience and reliable technology. ● FRP lining construction for underground tanks, etc. (Patent No. 3594183) ● Piping lining ● Construction of solvent tanks (Patent application 2014-185015, Utility model application 2015-003503) ● Steel tank inner surface FRP double-shell structure [with leakage detection device] (Patent application Japan 2012-256961, Utility model No. 3196696) (Patent Australia No. 2012-101365)