초록 ▼

A secondary containment system for containing fuel leaks or leaks of other environmentally hazardous fluids includes a containment chamber and a detection system for detecting leaks. The containment system includes a fluid-carrying inner pipe and a containment pipe surrounding the inner pipe with an

A secondary containment system for containing fuel leaks or leaks of other environmentally hazardous fluids includes a containment chamber and a detection system for detecting leaks. The containment system includes a fluid-carrying inner pipe and a containment pipe surrounding the inner pipe with an interstitial space being defined between the two pipes for containment of leaks. The interstitial space is pressurized with an inert fluid at a constant pressure greater than the pressure of the fluid flowing through the inner fluid-carrying pipe. Monitoring of the pressure of the inert fluid in the interstitial space triggers an alarm indicating that a leak has occurred. The location of the leak can be determined by the use of multiple pressure sensors. The containment pipe is reenforced to withstand pressures of at least 75 psi.

대표청구항 ▼

[ Having thus described the invention, we claim:] [1.] A fluid-carrying pipe assembly comprising:an elongated flexible inner fluid-carrying pipe;an elongated flexible containment pipe surrounding the inner fluid-carrying pipe and containing any fluid leaks from the inner fluid-carrying pipe;an inter

[ Having thus described the invention, we claim:] [1.] A fluid-carrying pipe assembly comprising:an elongated flexible inner fluid-carrying pipe;an elongated flexible containment pipe surrounding the inner fluid-carrying pipe and containing any fluid leaks from the inner fluid-carrying pipe;an interstitial space formed between the inner fluid-carrying pipe and the containment pipe;first and second ends of the containment pipe sealed to the inner fluid-carrying pipe to form a containment chamber surrounding the inner pipe and including the interstitial space;a source of pressurized inert gas connected to and pressurizing the containment chamber; anda pressure sensor for sensing the pressure of the inert gas within the containment chamber to determine when a leak has occurred in the inner fluid-carrying pipe, the pressure of the inert gas within the containment chamber greater than the pressure of the fluid within the inner fluid-carrying pipe.