Re-Conditioning of Used LPG Cylinders

(Welded Low Carbon Steel Cylinders Exceeding 5 Litre Water Capacity For Low-Pressure Liquefiable Gases - Requirements for Inspection and Reconditioning of Used LPG Cylinders - IS 13258:2014)

• 11.7 Litre - water capacity (5 kg) - Used for Domestic & Commercial Purpose.
• 33.3 Litre - water capacity (14.2 kg) - Used for Domestic Purpose.
• 44.5 Litre - water capacity (19 kg) - Used for Commercial Purpose.

Key Steps in Cylinder Hot Repairing:

1. Inspection & Testing

   • The cylinder is thoroughly inspected for external and internal damages.

   • A hydrostatic test may be performed to check for leaks and structural weaknesses.

2. Cleaning & Surface Preparation

   • Rust, paint, and debris are removed using sandblasting or chemical treatment.

   • The cylinder is dried completely to ensure proper adhesion of coatings.

3. Heating & Structural Repair

   • The cylinder is heated in a controlled environment to reshape dents and remove minor deformations.

   • Welding or metal filling is done for cracks or severe damages.

4. Pressure Testing & Safety Check

   • The cylinder undergoes a pressure test to confirm its ability to withstand required operating pressures.

   • It is inspected for any gas leaks or weakened spots.

5. Repainting & Coating

   • A protective coating is applied to prevent rust and corrosion.

   • The cylinder is labeled with necessary markings, such as manufacturing details, repair date, and safety certifications.

6. Final Approval & Certification

   • Once the cylinder passes all tests, it is certified as safe for reuse.

   • It is then returned to service for industrial, commercial, or domestic use.