A coupling for use with a blower unit for detecting leaks in a structure, wherein the coupling is constructed and arranged to attach to a surface of the structure defining an opening and to the blower unit via a sealing gasket, and to allow air flow through the coupling when the blower unit is attached to the coupling and to prevent air flow through the coupling when the blower unit is not attached to the coupling, and wherein the coupling further includes a pressure port defined within a surface of the coupling constructed and arranged to accommodate at least one of a differential pressure gauge fitting or a tube.

A coupling for use with a blower unit for detecting leaks in a structure, wherein the coupling is constructed and arranged to attach to a surface of the structure defining an opening and to the blower unit, and to allow air flow through the coupling when the blower unit is attached to the coupling and to prevent air flow through the coupling when the blower unit is not attached to the coupling, and wherein the coupling further includes a pressure port defined within a surface of the coupling constructed and arranged to accommodate at least one of a differential pressure gauge fitting or a tube.

Provided is a cooling tool that keeps a cooling object cold by utilizing the latent heat of a cold storage material and can visualize the physical condition of the cooling tool, i.e., can indicate whether the use condition of the cooling tool is appropriate. For example, when leakage of the cold storage material occurs, the cooling tool indicates the leakage of the cold storage material and shows whether the temperature is appropriate for keeping the cooling object cold. The cooling tool keeps the cooling object cold by utilizing the latent heat of a freezable material and includes: the freezable material that undergoes phase change at a specific temperature; a cold storage layer including a first container portion that contains the freezable material; and a condition indicator that shows the physical condition of the freezable material.

A coupling for use with a blower unit for detecting leaks in a structure, wherein the coupling is constructed and arranged to attach to a surface of the structure defining an opening and to the blower unit, and to allow air flow through the coupling when the blower unit is attached to the coupling and to prevent air flow through the coupling when the blower unit is not attached to the coupling, and wherein the coupling further includes a pressure port defined within a surface of the coupling constructed and arranged to accommodate at least one of a differential pressure gauge fitting or a tube.

Described is an apparatus and method for detecting leaks in a storage tank or containment of the type having a removable cover. The apparatus includes a replacement cover for the containment, a vacuum source, a fitting mounted in an aperture in the replacement cover and connected through a valve through a vacuum source, and a sprayer wand for spraying soapy liquid onto interior walls of the tank. Also provided is a method for detecting leaks in a storage tank or containment including the steps of emptying the tank of its contents, cleaning interior walls of the tank, spraying a soapy water liquid onto interior walls of the tank, reducing pressure within the tank, and examining the interior walls of the tank for bubbles.

Leakage detection for pressurized fuel tanks. To provide facilitated leakage detection, a leakage detection device for pressurized fuel tanks for storing a pressurized fuel includes a fuel-sensing tracer and a light-wave conducting component. The fuel sensing tracer is configured to alter its optical properties in the presence of a predetermined fuel. The light-wave conducting component is in optical contact with the fuel sensing tracer. Light travelling within the light-wave conducting component is modifiable by altered optical properties of the fuel sensing tracer such that modified light is indicative of the presence of fuel at the location of the fuel sensing tracer.