At NIRAJ AND PATEL ASSOCIATE, we use advanced abrasive blasting and airless spray equipment to deliver top-quality results—without ever subcontracting our work. As authorized applicators for Berger Paints and Asian Paints, we ensure trusted, professional service every time.
A corrosion audit is a systematic inspection and evaluation process to assess the extent of corrosion damage, corrosion control measures, and overall integrity of equipment, structures, or pipelines. It aims to identify corrosion risks, assess existing protection methods, and recommend improvements.
Key steps in a corrosion audit:
1. Visual Inspection: Check for visible corrosion, coating defects, rust, cracks, or leaks.
2. Thickness Measurement: Use ultrasonic thickness gauges to detect metal loss.
3. Corrosion Rate Assessment: Calculate corrosion rates from thickness data or corrosion coupons.
4. Review of Maintenance and History: Analyze past corrosion problems, repairs, and protection methods.
5. Evaluate Coating Condition: Assess the effectiveness of coatings, surface preparation, and adhesion.
6. Environmental Analysis: Check factors like humidity, chemical exposure, temperature, and microbial activity.
7. Report and Recommendations: Document findings and suggest corrective actions like recoating, cathodic protection, or material replacement.
When specifying a coating system to protect against corrosion, consider:
1. Substrate Type: Steel, aluminum, concrete, etc.
2. Environmental Conditions: Marine, industrial, atmospheric, chemical exposure.
3. Corrosion Risks: Type of corrosion (uniform, pitting, galvanic, etc.).
4. Coating Layers:
* Surface Preparation: Clean and prepare the surface (abrasive blasting, solvent cleaning).
* Primer: Provides adhesion and corrosion resistance (zinc-rich primers, epoxy primers).
* Intermediate Coats: Build thickness and add barrier protection (epoxies, polyurethanes).
* Topcoat: UV protection, aesthetics, and additional durability (polyurethanes, fluoropolymers).
5. Application Method: Spray, brush, roller, or immersion.
6. Standards and Specifications: ISO 12944 (for protective coatings on steel structures), NACE, SSPC.
7. Durability and Maintenance: Expected lifespan, ease of repair, and inspection intervals.
