A lithium ion battery (11) that is a test object is housed in a vacuum chamber (14). An initial exhaust pipe (47) and an inspection exhaust pipe (51) are connected to the upper portion of the vacuum chamber (14). The inside of the vacuum chamber (14) is subjected to an initial exhaust through the initial exhaust pipe (47) to lower the pressure inside the vacuum chamber (14) to an inspection pressure (Pe). Thereafter, an inspection exhaust is performed through the inspection exhaust pipe (51). A sensor unit (16) is interposed in the inspection exhaust pipe (51). Exhaust gas passing through the inspection exhaust pipe (51) flows into the sensor unit (16) from an inlet port, and is caused to flow perpendicularly toward the sensor face of a gas sensor by a nozzle provided inside the sensor unit (16). The exhaust gas passes through the inside of the gas sensor, and is discharged to outside of the sensor unit (16) from an exhaust port.

A fluid test system for checking the integrity of connections and welds in a fluid component includes a first nitrogen source selectively connected to first and second isopropanol tanks, a fluid line circulation circuit, a drain selectively connected to the fluid circulation line, the first IPA tank connected to the fluid line circulation circuit through a first IPA line and a second IPA tank connected to the fluid line circulation circuit through a second IPA a second drain selectively connected to the first and second IPA tanks, a first deionized water line selectively connectable to a deionized water source and to the fluid line circulation circuit, and a vacuum pump selectively connectable to the fluid line circulation circuit through a vacuum selection valve, wherein the fluid line circulation circuit is selectively configurable to flow water, nitrogen and IPA through a unit under test.

The present invention provides a method and apparatus of manufacturing a pipe liner for lining the inside of a pipe, for example a water or sewerage pipe requiring repair. The pipe liner is mainly formed of a fabric sleeve, or a plurality of fabric sleeves, and comprises a fluid-proof barrier coating on the inside surface of the pipe liner. The method involves arranging a strip of carrier material comprising a liquid sealant inside the fabric sleeve of the pipe liner and in registration with two opposing side edges of the sheet of fabric, facing an inner barrier coating of the fabric sleeve. The method can advantageously provide such a pipe liner with an inner barrier coating without everting the pipe liner after manufacture. The present invention may provide for avoiding internal cross-welding of pipe liners and a method for testing the integrity of the barrier coating of pipe liners.

A fluid test system for checking the integrity of connections and welds in a fluid component includes a first nitrogen source selectively connected to first and second isopropanol tanks, a fluid line circulation circuit, a drain selectively connected to the fluid circulation line, the first IPA tank connected to the fluid line circulation circuit through a first IPA line and a second IPA tank connected to the fluid line circulation circuit through a second IPA a second drain selectively connected to the first and second IPA tanks, a first deionized water line selectively connectable to a deionized water source and to the fluid line circulation circuit, and a vacuum pump selectively connectable to the fluid line circulation circuit through a vacuum selection valve, wherein the fluid line circulation circuit is selectively configurable to flow water, nitrogen and IPA through a unit under test.