Abstract: An apparatus for detecting structural integrity and localizing leaks from fluid storage holding structures, such as fuel supply storage tanks and fluid carrying pipelines. The invention comprises at least one reference electrode or material and at least one sample collection container containing an absorbent/adsorbent material. The sample container is positionally moveable within at least one perforated pipe disposed below the fluid holding structure. Leaking substances from the holding structure flow into the perforated pipe, into the sample container, and are absorbed/adsorbed. By removing the sample container from the pipe, the quantity, quality and position of the leak is detected.

Abstract: Methods and apparatuses for detecting leakage of hydrocarbons from and preventing corrosion of underground storage tanks. Soil samples near an underground storage tank are taken and analyzed in the field, preferably using hexane as a solvent to detect the presence of hydrocarbons such as heating and waste oil. The soil-to-tank potential of the tank and the presence of water within the tank are measured and, if warranted, cathodic protection provided to the tank to prevent corrosion or further corrosion.

Abstract: A fluid detector that senses fluids, activates an alarm and preserves a sample of the fluid for laboratory or on-site testing. The fluid detector includes a first container having a sealable cap and a fluid-passing portion, a second container disposable within the first container for collecting and storing a sample of the fluid. The detector can contain a fluid-responsive material which undergoes a change upon contact with the fluid. The change in the fluid-responsive material causes the second container to be sealed. The second container can contain a fluid collector so that the fluid can be analyzed.

Abstract: It has been discovered that a fuel additive comprising a major proportion of a high molecular weight amine, and minor proportions of naptha and a poly alpha olefin synthetic oil, together with a small amount of a biocide can be combined with distillate fuels such as kerosene and diesel fuels in a ratio of about one part additive to about 3,000 to about 10,000 parts of fuel to produce a polymerization and bacteria inhibitor, as well as a rust inhibitor which is capable of depolymerizing and dispersing sludge and sludge forming polymers in stored fuel.

Abstract: It has been discovered that a fuel additive comprising a major proportion of a high molecular weight amine, and minor proportions of naphtha and a polyalphaolefin synthetic oil, together with a small amount of a biocide and a minor proportion of a manganese-containing organometallic compound, preferably manganese linoleate, can be combined with fossil fuels in a ratio of about one part additive to 8,000 parts of fuel to produce a combustion efficiency improvement together with an inhibition of polymerization and bacteria, as well as a rust inhibitor, in stored fuels which is capable of depolymerizing and dispersing sludge and sludge forming polymers in stored fuel as well as improving the combustion efficiency of such fuels in use by improving fuel consumption in relation to heat output while reducing soot and scale and emissions.

Abstract: A method for testing and treating distillate fuel being stored for long periods of time for emergency power generation applications and the like, including measuring the percent transmittance of a fuel sample with ultraviolet before and after heating at a preselected temperature below the boiling range of the distillate fuel for a sufficient period of time to accelerate polymerization where the sample is made to reach such preselected temperature within about five minutes; and comparing the percent transmittance measurements to determine the suitability of the fuel for continued storage with or without the addition of further polymerization inhibitors and/or depolymerizers.