An anode is embedded in an electrolyte layer applied to the surface of a structure such as a pipe section to provide an ionic conductive path between the anode and structure to supply cathodic protection to the structure, where the natural environment may not provide a continuous electrolyte. The anode is comprised of a material normally used as a cathodic protection anode material, such as, an expanded valve metal mesh or ribbon having either an electrochemically active coating or noble metal coating, or a sacrificial anode metal alloy. The anode material is made continuous from one end of the structure to the other and may be connected to a common bus wire from one end to the other. The anode and structure to be protected are connected using wires to a DC power supply that causes cathodic protection current flow to the structure in the case of an impressed current system. No separate power supply is needed in the case of a galvanic or sacrificial anode system. A pipeline is formed from a series of interconnected composite pipe sections.

Composite anode, electrolyte pipe section, and method of making and forming a pipeline, and applying cathodic protection to the pipeline

A high voltage breakdown test circuit for testing of insulation resistance within an electrical device is disclosed. Operator safety is attained by allowing a fixed amount of energy considered nonlethal and advantageously imperceptible into the test circuit and by the internal system design. The system elements are connected in series and must all function properly in order to deliver the output signal to the device under test. Each system element obtains its power from the fixed energy input and is thereby activated only during an actual test. Indicator means of the pass/fail type provide an operator with a quick visual indication of the results of an insulation resistance test.

High voltage breakdown test circuit for insulation testing utilizing a predetermined fixed amount of energy

Systems, methods and program products of instructions stored on a computer readable medium related to a tether free piggable inspection tool capable of detecting holidays and able to read and store non-conductive internal coating thickness values in very long conductive pipes, along with distance values for further off-line analysis, are provided The inspection tool includes a plurality of thickness probes, a data storage unit, a control unit, a plurality of navigation wheels and a holiday detector that uses an electrical conductive medium, such as a gas or fluid, as the ground connection A closed loop configuration is adopted allowing the system to autocorrect itself for different coating thicknesses along the pipe

In-pipe coating integrity monitor for very long pipes

A method for maintaining clear passageways in an extracorporeal blood flow system (5000). The method comprises intermittently providing one or more anti-clotting agents to a passageway of the extracorporeal blood flow system. Also disclosed is an extracorporeal blood flow system. The system comprises a passageway, and a device operatively connected to provide one or more anti-clotting agents to at least a portion of said passageway. The anti-clotting agents can be ultrasound or detergent.

Body fluid analyzer

An electrical detector operable to detect holidays or defects in insulating coatings or mastic coatings generally applied to pipelines has a portable DC power supply, a DC to DC converter, an energy storing means operable to store energy from the DC converter, and SCR interconnected with the energy storing means, an oscillator means for gating the SCR on to discharge the energy storing means through a double primary pulse transformer to produce a high voltage, fast time pulse on an exploring electrode, and an alarm circuit capable of audibly and/or visually indicating that a high voltage has arced through the pipeline coating at a holiday point.

Charles W Eisele

Papers

Holiday detector utilizing staggered capacitor discharges for producing a fast rise time high-voltage pulse