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Overview of Soil-Compass

Soil corrosion refers to corrosion of metals and alloys in underground structures exposed to soil environment. The severity of soil corrosion is determined by many factors, including temperature, soil moisture content, oxygen availability, soil resistivity (soil condition and characteristics), soil type (water drainage capability) and homogeneity (variation in soil type), microbial activities, stray current drainage, age, and cathodic polarization if CP is installed. Soil-Compass is the only device and OS independent software tool on the market for the prediction and modeling of soil corrosion for metals and alloys. Designers, architects, engineers, consultants, operation personnel, maintenance and inspection engineers can quickly determine the corrosion depth, the corrosion rates, and the remaining life of the structure or components, anytime, anywhere, on any device running any OS without the need to install or download anything. Soil-Compass also predicts the soil corrosivity class, the likelihood of microbiologically-influenced corrosion (MIC), DC stray current corrosion and AC corrosion in compliance with ISO 18086. Soil-Compass software models the effects of the following critical factors on soil corrosion:

• Soil type

• Soil temperature

• Soil resistivity

• Soil pH

• Soil moisture content

• Soil chloride content

• Soil carbonate content

• Soil sulfate content

• Soil sulfide content

• Soil redox potential

The outputs of Soil-Compass include the following:

• ANSI/AWWA C105 point rating with regard to soil corrosivity,

• the soil corrosivity category as per BS EN 12501 standard,

• the corrosion depth,

• the corrosion rate,

• the remaining life or the time-to-perforation,

• the mode of failure,

• likelihood of microbiologically-influenced corrosion (MIC) in the soil environments

• the risk of DC stray current corrosion and AC corrosion.

Figures below show the screen shots of Soil-Compass.

Figure 1 Soil-Compass Predicts the rate of soil corrosion (including MIC) and the remaining life of structures.

Under the specified exposure conditions shown in Figure 1 above, Soil-Compass predicts, the corrosion rate, the accumulated depth of corrosion at the specified age, and the remaining life of the structure. The predictive engine used in Soil-Compass for the modeling and prediction of soil corrosion of metals and alloys complies with applicable international standard ISO 18086 and relevant industry best practices.

Using Soil-Compass is as easy as 1-2-3.

(1) Select the Material & enter the Age and Thickness of the structure.

(2) Enter the soil property data.

(3) Review the prediction results.

The following figures show the screen shots of Soil-Compass.

Figure 2 Soil-Compass predicts corrosion of cast irons, steels, stainless steels and alloys exposed to the soil environments.

Soil-Compass predicts the effect of cathodic polarization on the corrosion rate and the remaining life of the structure if cathodic protection system is installed. Figures 3 and 4 below show the same structure before and after cathodic protection system is installed.

Figure 3 Soil-Compass predicts the corrosion rate and remaining life for a structure without cathodic protection system.

Figure 4 Soil-Compass predicts the corrosion rate and remaining life for a structure with cathodic protection system installed (CP cathodic polarization = 20 mV).

 Figure 5 Soil-Compass predicts soil corrosion, soil corrosivity, stray current and AC corrosion.

Soil-Compass models and predicts soil corrosion of metals and alloys including commonly used aluminum alloys, copper, zinc, cast irons, steel and galvanized steel, stainless steels and duplex steels. Following is the list of metals and alloys included in Soil-Compass software:

Al 1100
Al 2017
Al 2024
Al 5052
Al 6053
Cast Iron
Ductile Iron
Open Hearth Iron
Wrought Iron
Steel
Galvanized Steel
Copper
Lead
Zinc
Type 410
Type 430
Type 444
Type 446
Type 304
Type 304L
Type 304LN
Type 316
Type 316L
Type 316LN
Type 317
Type 317L
Type 317LMN
Type 321
Type 347
904L

SMO254
AL-6X
AL-6XN
Inconel 625
Incoloy 825

Duplex 2205
Duplex 2304
Duplex 2507
Duplex 2707HD

The powerful applications of Soil-Compass are truly unlimited in engineering design, corrosion prediction and corrosion modeling, materials selection, and remaining life estimation of structures and components buried in the soil environments.

Click here to contact us for licensing details and experience the power of Soil-Compass.

Soil-Compass, giving you the right directions in Soil Corrosion Prediction and Modeling

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