Cathodic Protection Accessories
Handy Cap & Primer
Handy Cap is the complete weld connection sealer. It is designed to fit any welded connection and is installed simply by pressing firmly into place. A strong wire connection to the structure is important for all cathodic protection systems. A properly sealed weld connection will last for many years, PETUNIA supplies easy-to-use Handy caps, primer & related tapes.
Wrapping Tape
When a wire splice of repair has to be made to a cathodic protection system you want to use a tape that works. Vinyl tapes are commonly used to repair or seal aboveground cathodic protection, they are also employed over buried wire splices as a secondary cover. They can be stretched easily and are resistant to UV rays. Rubber and mastic tape is thick and extremely moisture resistant.
Zinc Earthing Cell
Zinc Earthig Cell consists of two zinc electrodes, insulated from one another. One electrode would typically be connected to the protected structure, the other to an unprotected system. The electrodes are surrounded by low-resistivity backfill allowing large stray currents to pass between them. This enables the structure to be earthed on the ground.
Cock Backfill
Coke breeze is a carbon backfill which is used around impressed current anodes for underground cathodic protection applications. It is used to: • Reduce the resistivity of the environment surrounding the anode to increase the amount of current the anode can discharge • Extend the anode surface area, thus increasing the amount of current the anode can discharge • Reduce consumption of the anode since the carbon becomes part of the anode consumed before the anode itself. Particle size and shape are also important when specifying a backfill. Both parameters determine the contact area between anode and ground while influencing the porosity of the column, which is important for gas ventilation. A general-purpose coke breeze is for use in shallow horizontal and vertical groundbeds. For deep well applications, a special calcined petroleum coke breeze is used.
Generally carbonaceous backfill material usually is one of the following types:
Type 1: Coal coke breeze
Type 2: Calcined petroleum coke breeze
Type 3: Special calcined petroleum coke breeze
Insulating Flange Kit
Flange insulation kits for metallic pipelines are available in two types for all flange sizes and pressure ratings. Flange insulation kits are commonly installed at the end of a pipeline to electrically isolate the pipe for other buried foreign metallic structures and plant earthing systems, therefore, limiting the amount of cathodic protection current required to protect the pipeline.
Type E is a full-faced gasket with the same outside diameter as the flange and precision-cut bolt holes. Type E gaskets are available in the plain face or Neoprene face phenolic, as well as a variety of high-temperature materials.
TYPE FType F gaskets are made to fit the raised face portion of the flange only. As there are no bolts holes in the F gasket, the inside diameter of the bolt hole circle is slightly smaller than the outside diameter of the gasket, assuring an exact, automatic positioning of the gasket. Available in the plain face or Neoprene faced phenolic, as well as a variety of high-temperature materials.
Insulating Sleeves & Washers
Insulating sleeves manufactured of high density polyethylene are available in a full range of sizes. Also available are one-piece integral sleeves and washers which are made of phenolic, providing superior compression strength. Integral sleeves are available in all sizes.
Exothermic Welding System
Thermite welding is a simple, inexpensive, and efficient method of attaching a copper conductor cable to steel or cast iron. It is particularly useful for connecting cathodic protection cables to pipelines including test leads, and negative and bonding cables. The welding process uses a high-temperature reaction charge of powdered copper oxide and aluminum which ignites and produces aluminum oxide and super-heated copper.
• Graphite mold
PETUNIA moulds are made of heat-resistant semi-permanent graphite and are used for making the Petunia Welding Powder “PetWeld” connection. The high-temperature thermic reaction takes place in the crucible of the moulds allowing molten copper to flow through the tap hole into the weld cavity, producing a solid joint. They can be used for over 50 connections under normal usage.
• PetWeld” Cartridge
Petweld” powder, a mixture of copper oxide and aluminum, comes in plastic tubes. Each tube contains a measured quantity of weld-material powder. The powder supplied is sufficient to make the appropriate joint. Powders are available in two types for both general and cathodic protection purposes.
• Tools Kit
A set of cleaning tools, a flint gun, and a fire flame are required to clean the conductors and moulds to start the reaction and to warm the mould as well.
