A passive cathodic protection process for preservation of em bedded metallic foundations entails embedding a wrap around a metallic foundation. The wrap has an outer sheath and an inner absorbent mat to be in direct contact with the metallic foundation. The is also mat hydrophobic. The wrap is subsumed such that an upper edge of the wrap is accessible. An oil-based metallic soap is injected via the upper edge to impregnate the mat. The metallic soap is selected from a set of metallic soaps such that the metal of the metallic soap is more electropositive than the metal of the metallic foundation such that the metallic soap acts as an anodic solution for galvanic exchange with metal within the em bedded metallic foundation for the passive cathodic protection thereof. For example, zinc naphthenate may be selected for steel or aluminium foundations thereby allowing for both passive cathodic protection and biocidal action.

A carbon steel main body defines a flow passage. The carbon steel main body includes an end. The carbon steel main body includes a beveled edge at the end. A corrosion resistant cladding is deposited along an inner surface of the carbon steel main body. The corrosion resistant cladding extends from the end to a distance into the carbon steel main body.

A tubular includes a carbon steel main body defining a first flow passage. The carbon steel main body includes a first end and a second end. The carbon steel main body includes a beveled edge at the first end of the carbon steel main body. A corrosion resistant pup defines a second flow passage in-line with the first flow passage. The corrosion resistant pup includes a substantially same inner diameter and outer diameter as the carbon steel main body. The corrosion resistant pup includes a first end and a second end. The corrosion resistant pup includes a first beveled edge at the first end. The corrosion resistant pup is connected to the carbon steel main body by a weld along the beveled edge of the carbon steel main body and the beveled edge of the corrosion resistant pup.

The present disclosure is for a safety system for de-coupling of a cathodically protected structure. The safety system comprises both a DC (Direct Current) component, connected or connectable between the structure and ground, and an AC (Alternating Current) component, connected or connectable between the structure and ground and connected in parallel with the DC component. The safety system also comprises a switch connected in series with the AC component, the switch configured selectively to disconnect the AC component between the structure and ground while permitting the DC component to remain connected between structure and ground.

The present disclosure is for a safety system for de-coupling of a cathodically protected structure. The safety system comprises both a DC (Direct Current) component, connected or connectable between the structure and ground, and an AC (Alternating Current) component, connected or connectable between the structure and ground and connected in parallel with the DC component. The safety system also comprises a switch connected in series with the AC component, the switch configured selectively to disconnect the AC component between the structure and ground while permitting the DC component to remain connected between structure and ground.

A metal (carbon steel) tank receives growth media containing an electrolyte. An anode is positioned within the growth media in electrical contact with the metal tank to polarize the anode and the metal tank with a potential difference therebetween. The metal tank becomes a cathode when a potential difference is established between the metal tank and the anode. The anode, the cathode, and the electrolyte form an electrochemical cell. The carbon steel tank will be protected for twenty to thirty years.

The invention relates to a system for applying a superimposed time-varying frequency electromagnetic wave to a target object or a target region that is formed by the target object and a medium surrounding the target object, comprising a device for generating a superimposed time-varying frequency electromagnetic wave where the time-varying AC wave is riding on the predefined DC bias voltage. When applied to the object or region, the superimposed time-varying frequency electromagnetic wave is able to induce a flow of ionic current having a DC component traveling in a pulsating and time-varying manner in the target object and/or in the medium and effect induced vibration of electrons and molecules of the target object and the medium. The invention also relates to a method applying a superimposed time-varying frequency electromagnetic wave to a target object or a target region. The method and the system of the invention significantly reduce the capital cost and require very low energy, with the environmentally friendly final products, and are able to result in various treatment effects simultaneously.

The invention relates to a system for applying a superimposed time-varying frequency electromagnetic wave to a target object or a target region that is formed by the target object and a medium surrounding the target object, comprising a device for generating a superimposed time-varying frequency electromagnetic wave where the time-varying AC wave is riding on the predefined DC bias voltage. When applied to the object or region, the superimposed time-varying frequency electromagnetic wave is able to induce a flow of ionic current having a DC component traveling in a pulsating and time-varying manner in the target object and/or in the medium and effect induced vibration of electrons and molecules of the target object and the medium. The invention also relates to a method applying a superimposed time-varying frequency electromagnetic wave to a target object or a target region. The method and the system of the invention significantly reduce the capital cost and require very low energy, with the environmentally friendly final products, and are able to result in various treatment effects simultaneously.

A water heater tank anode support and or locator device for an anode provided in a water heater tank, the support device having an anode engaging portion to engage said anode, and a tank engaging formation for operatively engaging a base of the tank.

The invention relates to a method and system for preventing corrosion of at least one metallic structure in an electrolyte medium, comprising applying a superimposed time-varying frequency electromagnetic wave to the structure, the method comprising the steps of generating a superimposed time-varying frequency electromagnetic wave (DAC wave) where an AC driving signal with time-varying frequency is riding on a DC output with a predefined DC bias voltage, transmitting the DAC wave current to one or more emitters, emitting the DAC wave via the one or more emitters, placing the one or more emitters at a spaced distance from the metallic structure, subjecting the metallic structure to the DAC wave current, controlling the negative return current of the DAC wave from the metallic structure, such that the DAC wave is distributed across the structure surface and directly excites a target region of the metallic structure, and wherein the excitation induces a flow of ionic current having a DC component travelling in a pulsating and time-varying manner in the target region and effects induced vibration of electrons and molecules in the target region. The method and the system of the invention significantly reduce capital costs and require very low energy, they avoid environmentally unfriendly final products, and are able to result in effective corrosion protection of metallic structures in different surrounding conditions.