Acid proof lining services involve the supply and installation of corrosion-resistant linings to protect industrial equipment and structures from chemical attack, particularly acids, alkalis, and solvents. These services are essential in industries handling corrosive substances, ensuring long-term durability, safety, and compliance.
Scope of Acid Proof Lining Services:
1. Material Supply
- Acid-Resistant Bricks: Class I, II, III as per IS/ASTM standards
- Mortars:
- Silicate-based (Potassium or Sodium Silicate)
- Phenolic resin, Furan resin
- Epoxy, Vinyl ester, CNSL (cashew-based)
- Membranes/Primers: Bitumen, epoxy-based underlays
- Tile Linings: Ceramic and carbon tiles for high chemical resistance
2. Application Areas
- Chemical & Fertilizer Plants
- Pickling Tanks & Acid Storage Vessels
- Battery rooms & Electroplating Units
- Dyes & Pesticide Industries
- Effluent Treatment Plants (ETP)
- Flue gas ducts, drains, floors & chimneys
3. Services Offered
- Surface Preparation: Chipping, sandblasting, and cleaning
- Membrane Application: Waterproofing and primer layer to prevent acid penetration
- Brick/Tile Lining: Precise laying with expansion joints
- Jointing and Finishing: Proper mortar application and acid-proof pointing
- Post-Curing: Controlled drying and curing of lining
4. Design & Engineering
- Material selection based on chemical concentration and temperature
- Expansion joint layout and slope design
- Coating thickness recommendations and technical drawings
5. Inspection & Testing
- Spark testing of membranes
- Acid resistance tests
- Visual inspection and leak detection
- Adhesion tests if required
6. Maintenance & Repair
- Annual inspection contracts
- Localized patch repair of damaged linings
- Re-lining and overhauls
Benefits of Acid Proof Lining
- Extends the life of equipment & civil structures
- Minimizes downtime and leakage risks
- Ensures compliance with pollution control norms
- Protects against mechanical abrasion and thermal stress
Deliverables Provided
- BOQ (Bill of Quantities)
- Method Statement
- Test Certificates (TDS/MSDS)
- As-built drawings and warranty documentation