Industrial applications such as steel or concrete structures (including buildings, sumps, containments, etc.) and process systems (including tanks, pipes, float cells, etc.) are subjected to very harsh environments. After years of exposure, both surface damage and eventually structural damage due to chemicals, abrasion, and impact occurs and must be repaired.
SCG utilizes composite systems to rehabilitate sites with both surface and structural damage. These repairs normally include a carefully selected coating material that is matched to the constraints of the application.
SCG uses a three-step process to insure the match of coatings to the application provides the optimal solution:
Step 1: Classify Application
We use 3 broad categories in this step to classify the type:
- Dry Conditions (such as columns)
- Condensing Vapors/Splash (such as walls, roof surfaces)
- Continuous Immersion (such as tanks)
Step 2: Physical Constraints
Each application is constrained by:
- Temperature extremes
- Acidic versus alkaline chemistry
- Abrasion and other exposures
Each of these constraints must be defined and used to select materials.
Step 3: Economic Constraints
The solution must fit the life cycle needed, costs must be aligned with benefits and budgets.
Coating and Lining Options:
SCG conducts extensive in-house testing on coatings and related products to verify properties and to develop detailed field installation procedures that include manufacturers recommendations.
Depending on the specific coating selected for an application, SCG is fully certified in the following types of installation equipment that may be required:
- Rolled and sprayed-on products
- Heated Plural Component sprayers
- Flame-gun applied products
- Field baked-on products
Coating and Lining Examples:
Tankhouse Column Coating:
The exposure was primarily to low concentration sulfuric acid based electrolyte splash and temporary immersion at the floor level.
Concrete Tank Lining:
Concrete cell tank required high acid resistance. A thermoplastic coating was applied using a proprietary flame applicator.
Acid Containment Coating:
Chemical plant coating was matched to acids involved and applied with rollers. The application was modified to produce a non-slip surface.
Steel Tank Linings:
Steel shell process water tank required fast cure since tank was partially in operation during repair. The coating was chosen to resist accidental exposure to various chemistries.