The present invention relates to a method for reducing or preventing the formation or activity of a corrosion-associated biofilm on a metal surface, wherein the method comprises contacting the metal surface with a liquid composition comprising biocidal preparation. The present invention also relates to a microbicidal composition comprising at least one alcohol, one liquid hydrocarbon, a bacteriophage immobilized on a magnetic nanocomposite, at least one phage releasing reagent and one stabilizer. The microbicide composition and method of the present invention reduces biofilms on surfaces, and consequently, reduces, mitigates, or eliminates MIC in internal surface of the oil transporting pipelines.

A hydrocarbon tank system environment corrosion inhibitor includes use of inert gas, preferably Nitrogen, to blanket ullage and interstice through the tank system. Blanket gas is provided is controller into coupling to access ullages. Blanket gas is provided upon fueling events to stabilize the pressure in the system and prevent entry of atmospheric air and water (vapor). Blanket gas may be continuously run into the ullage and/or other spaces in tank system. A controlled system allows for monitoring of pressures in the tank, and thereby identifies pressure events and even leaks in system due to unusual events, or general loss of pressure.

A hydrocarbon tank system environment corrosion inhibitor includes use of inert gas, preferably Nitrogen, to blanket ullage and interstice through the tank system. Blanket gas is provided is controller into coupling to access ullages. Blanket gas is provided upon fueling events to stabilize the pressure in the system and prevent entry of atmospheric air and water (vapor). Blanket gas may be continuously run into the ullage and/or other spaces in tank system. A controlled system allows for monitoring of pressures in the tank, and thereby identifies pressure events and even leaks in system due to unusual events, or general loss of pressure.

[Problem to be solved] To provide a urea manufacturing method capable of inhibiting corrosion of a urea plant and enhancing a reaction yield.

[Solution] In a urea manufacturing plant, a method for manufacturing urea from manufacturing raw materials including NH.sub.3 and CO.sub.2, wherein the urea manufacturing plant includes a plurality of processing units including a reactor, a stripper and a condenser, and a plurality of lines, and the inner wall surfaces of the plurality of processing units and the plurality of lines are made of a stainless steel and at least some of the plurality of lines is made of an austenitic stainless steel, the urea manufacturing method including: forming a passivation film on the inner wall surfaces of the plurality of processing units and the plurality of lines by supplying CO.sub.2 of the manufacturing raw material with added oxygen; continuously measuring a wall thickness of the line made of the austenitic stainless steel; and adjusting a supply amount of the oxygen in response to a measurement value of the wall thickness to control a corrosion rate and a reaction yield of urea.

A storage solution that provides substantial advantages over existing storage solutions. The storage solution includes a corrosion inhibition system that provides or facilitates free progression or dispersion of volatile corrosion inhibitor (VCI) molecules in a chamber or cavity formed or enveloped in the storage solution.

A storage solution that provides substantial advantages over existing storage solutions. The storage solution includes a corrosion inhibition system that provides or facilitates free progression or dispersion of volatile corrosion inhibitor (VCI) molecules in a chamber or cavity formed or enveloped in the storage solution.

A hydrocarbon tank system environment corrosion inhibitor includes use of inert gas, preferably Nitrogen, to blanket ullage and interstice through the tank system. Blanket gas is provided is controller into coupling to access ullages. Blanket gas is provided upon fueling events to stabilize the pressure m the system and prevent entry of atmospheric air and water (vapor). Blanket gas may be continuously run into the ullage and/or other spaces in tank system. A controlled system allows for monitoring of pressures in the tank, and thereby identifies pressure events and even leaks in system due to unusual events, or general loss of pressure.

A hydrocarbon tank system environment corrosion inhibitor includes use of inert gas, preferably Nitrogen, to blanket ullage and interstice through the tank system. Blanket gas is provided is controller into coupling to access ullages. Blanket gas is provided upon fueling events to stabilize the pressure m the system and prevent entry of atmospheric air and water (vapor). Blanket gas may be continuously run into the ullage and/or other spaces in tank system. A controlled system allows for monitoring of pressures in the tank, and thereby identifies pressure events and even leaks in system due to unusual events, or general loss of pressure.

The present invention relates to a system and method for continuous monitoring of system health in closed water systems. Sensors are provided to measure a plurality of system parameters. The measurements are compared to threshold ranges. A diagnosis of system health, specifically in relation to corrosion, is derived from the comparison of at least a first parameter to its threshold range. The diagnosis is further refined by comparison of a further parameter to its threshold range. Also disclosed are example sensors and methods, including galvanic sensors, optical corrosion sensors and methods for monitoring the effectiveness of inhibitors in the water system using conductivity measurements.

The solenoid valve may include a coil, a stem core tube, and a core. The coil may include one or more electrical leads configured to provide the coil with an electric current. The coil may be configured to convert the electric current to a magnetic field. At least a portion of the stem core tube may be insertable within a coil channel. At least a portion of the core may be insertable within an end of the stem core tube and may be moveable within the stem core tube via the magnetic field. At least one of the stem core tube or the core may be fabricated from 434 stainless steel and treated with one or more corrosion prevention processes. The solenoid valve may be couplable to one or more components of the brewing apparatus. The brewing apparatus may be dimensioned to fit within a compartment of the aircraft galley.