Abstract: A system for detecting gas leaking out of a joint in a gas transport and/or storage system is provided. The joint has an interface formed of first and second confronting surfaces. The system includes a plurality of gas sensors and a data acquisition unit. The sensors are adapted for mounting at spaced locations with respect to one another about at least a portion of the joint closely adjacent the confronting surfaces and are configured, e.g., are flexible, so that they can be readily mounted thereat irrespective of the contour of that portion of the joint. The data acquisition unit receives signals from the sensors to provide an indication of leakage of gas at the interface and an indication of the location of the portion of the interface at which the leakage has occurred.

Abstract: The present invention is directed to a method of detecting trace levels of contained interactive gas, such as oxygen, in gases containing trace levels of interactive gas, such as oxygen, by doping a known low level amount of interactive gas (i.e., oxygen) into the detection apparatus to saturate interactive gas reactive or adsorptive sites in the apparatus, thus allowing the accurate, reproducible and responsive detection of contained interactive gas. More particularly, the present invention dopes a carrier gas of a gas chromatograph with low levels of oxygen in order to detect contained trace oxygen in a sample of a gas being analyzed for contained trace oxygen.

Abstract: Water in a gas is measured with improved sensitivity to low levels (on the order of 2.000 to 0.005 ppmv), response time and cell longevity, by an electrolytic cell wherein the electrode element comprises a tubular conduit for the gas having a pair of electrode wires helically positioned in parallel on the interior wall of the conduit from end to end, the wires being coated, except for small portions adjacent the inlet and outlet of the conduit, with a water absorbent crystalline coating comprising a mixture of phosphoric acid or a derivative thereof and an alkylene (C.sub.2 -C.sub.4) oxide polymer selected from a polyalkylene glycol of average molecular weight of at least 500 and an ether or ester thereof having an average molecular weight of at least 300.