galvanic anode

Also found in: Dictionary, Wikipedia.

sacrificial anode

A metal plate used in cathodic protection (i.e., the protection from corrosion) of piping or other equipment to which it is electrically connected. This metal plate must be more corrodible than the piping to which it is attached.
References in periodicals archive ?
If galvanic anodes are used for cathodic protection in an area of AC influence and if test stations are available, the following tests should be conducted during each pipeline corrosion survey using suitable instrumentation: a) Measure and record both the AC and DC currents from the anodes, b) Measure and record the AC & DC pipe-to-soil potentials.
Corrosion protection by galvanic anodes and painting is also provided to the market.
Sacrificial galvanic anodes are used to control corrosion on steel gas distribution lines.
Among specific topics are a local regular dual reciprocity method for a two dimensional convection-diffusion equation, a coupling strategy between the boundary element methods and Kansa's method for acoustic analysis of heterogeneous media, a least squares solution applied to plate analysis using the traction boundary integral equation, the boundary element analysis of deformation and movement of a capsule and a red blood cell close to the wall, three-dimensional acoustic simulation inside closed rooms bounded by non-parallel floor and ceiling surfaces, and calculating the protective current density distribution of a cathode protection system with galvanic anodes in terms of double-layer electrolyte.
Galvanic anodes and impressed current rectifiers have been employed to perform this task for many years.
Repairs using low shrinkage Mapegrout mortars can be further enhanced by the use of Mapeshield galvanic anodes.
2 through 5 include the provision of cathodic protection in the form of galvanic anodes at Berths 4, 5, 12 and 14 respectively as indicated on the Drawings and as specified herein.
As such, pre-construction design planning included mitigative provisions such as galvanic anodes and interference connection points to address interference immediately after construction and before Keystone's impressed current systems would be commissioned.
Part of the ongoing maintenance of the system is the installation of sacrificial galvanic anodes for cathodic protection of the steel gas distribution lines to control corrosion.
The protection by galvanic anodes and anticorrosive paint of various new and existing structures is proposed in the form of three options.