In the 10th part of this series, we explain how the implementation plan is a tool that can be used to break annual key strategies into increasingly smaller tasks.
A number of board key strategies and definitions of success were agreed upon at the fall 2017 meeting of the NACE International Board of Directors.
Before a concrete structure can be coated, it is necessary to understand and overcome concrete's natural properties.
The key to effective planning involves converting decisions to actions. For the process to be most effective, the results of the actions are monitored and shared, thus continuing an unending process.
The key to effective planning involves converting decisions to actions. For the process to be most effective, the results of the actions are monitored and shared, thus continuing an unending process.
The greatest use of high-temperature water and steam is in electrical power generation.
Most pipeline cathodic protection applications involve either galvanic anode or impressed current systems installed in earth for protection of external surfaces.
Coating operations of almost any size must include some type of meaningful test program.
The main causes of corrosion of steel in concrete are chloride attack and carbonation. These two mechanisms are unusual in that they do not attack the integrity of the concrete. Instead, aggressive chemical species pass through the pores in the concrete and attack the steel. This is unlike normal deterioration processes resulting from chemical attack on concrete.
Although atmospheres can be classified into four basic types, most of them are mixed and present no clear lines of demarcation. Furthermore, the type of atmosphere may vary with the wind pattern, particularly where corrosive pollutants are concerned.
Two of the most fundamental and informative field measurements are soil resistivity surveys and pipe-to-soil potential surveys.
In water, the concentrations of various substances in dissolved, colloidal, or suspended form are typically low, but may vary considerably depending on the components and usage. For example, hardness values of up to 400 parts per million of calcium carbonate is sometimes tolerated in public supplies of potable water, whereas 1 ppm of dissolved iron would be unacceptable.
Steel structures such as bulkheads, piles, offshore drilling platforms, etc., may be protected with either sacrificial galvanic anode or impressed current cathodic protection systems.
Several elements of preplanning are necessary to effectively execute the condition survey. The first is a logical breakdown of the facility, and the second is to have a grading system to evaluate the observed conditions.
Corrosion failures are often subtle and a result of invisible localized effects in the form of pits, intergranular corrosion, or attack within crevices.