Underground buried tank with leakage detection device, inner surface FRP double-shell structure.
It is a patented technology exclusive to Sanfroint.
In the event of an anomaly in the outer shell FRP of an existing SF double-shell tank, a new three-dimensional cross-structured FRP lining will be applied to the inner surface of the inner shell steel, and a sensor (a device for detecting minor leaks of hazardous materials in underground buried piping (constant monitoring equipment) evaluation number: All Hazardous Materials Association Evaluation No. 22) will be installed in that space to continuously monitor for leaks of hazardous materials. This allows for the provision of functions equivalent to those of an SF double-shell tank at a lower cost and more quickly. 【Benefits】 ■ There will be no need to repair each location every time an anomaly is detected. ■ The number of facilities that cannot be repaired for economic reasons will decrease, reducing the risk of accidents. ■ Even facilities that cannot be inspected frequently can be safely monitored from a remote location. * For specific background information, please refer to the basic information below. 【Features】 ■ Patented in Japan and Australia ■ Continuous monitoring of leaks inside underground tanks 【Japan】 Steel tank inner surface FRP double-shell structure (with leak detection device) Patent: No. 6134128 Utility Model: No. 3196696 【Australia】 Steel tank inner surface FRP double-shell structure (with leak detection device) Patent: No. 2012-101365 * For more details, please contact us or download the PDF materials for review.
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basic information
Underground tanks at facilities handling hazardous materials such as SS have been equipped with SF double-walled tanks since around 1994, and as of March 31, 2011, there are 41,572 SF double-walled tanks installed. In this situation, during leakage inspections of underground tanks, abnormal pressure fluctuations have been confirmed in the small space between the outer shell made of FRP and the inner shell made of steel of the SF double-walled tanks. Even if the cause is identified and the leakage point is repaired, there are cases where new abnormalities appear in different locations, or abnormalities are confirmed in other areas several years after the first repair, making it impossible to guarantee that past repair work will be completed in one go. However, the fire department is also struggling with the reality that they cannot provide strong guidance due to economic issues. From the above examples, it cannot be said that simply repairing the leakage points is sufficient. ▼ Possible Measures 1. Excavate the SF double-walled underground tank where abnormalities have been detected, completely remove the old outer FRP shell, and reconstruct the outer shell with FRP again. 2. Excavate the SF double-walled underground tank where abnormalities have been detected and replace it with a new tank. The above methods are costly due to tank costs, material costs, and construction expenses, making them impractical. 3. As a realistic measure, construct the inner FRP double-walled structure.
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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)
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