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Maintenance and Inspection of Chemical Storage Tank Manufacturers and Usage Precautions

Classification: Industry Information

Time2024-11-11

Maintenance and Repair of Chemical Storage Tank Manufacturers

Chemical storage tank manufacturerMaintenance and repair

       Cleaning or replacing liquid level gauges, repairing or replacing inlet, outlet, and drainage valves, and clearing cooling water coils. Inspect and repair safety valves and venting flame arresters. Repair anti-corrosion and insulation layers.

       Overhaul: Includes medium repair items, repairing internal components of the chemical storage tank, and corresponding repairs or replacements of sections where cracks, severe corrosion, etc., are found. Repairs can use polymer composite materials. Based on internal and external inspection requirements, and after repairing or replacing sections, leakage or hydraulic tests must be conducted. Comprehensive rust removal and insulation. Address other issues found during internal and external inspections of the storage tank.

       Repair methods and quality standards for the repair of storage tanks, such as opening holes, welding, and replacing sections, should be based on the 'Container Regulations' and other relevant standards, with specific construction plans formulated and approved by the unit's technical responsible person. Materials used for repairs (base materials, welding rods, wires, flux, etc.) and valves must have quality certificates. When using old materials, valves, and fasteners, they must be inspected and qualified before use. Fasteners for assembling the storage tank should be lubricated, and bolts should be tightened diagonally in sequence. Non-metallic gaskets should generally not be reused, and when selecting gaskets, the corrosiveness of the medium should be considered. After repairs, anti-corrosion and insulation work can only proceed after passing inspection.

Storage tank

Precautions for using chemical storage tanks

       1. For storage tanks containing flammable gases and liquids, necessary fire-fighting equipment should be provided. Smoking, open flames for lighting or heating, and bringing ignition sources into the tank area are strictly prohibited.

       2. For storage tanks containing flammable, explosive, toxic, or corrosive media, relevant hazardous materials management regulations must be strictly followed.

       3. Before inspecting and repairing the storage tank, the power supply to related electrical equipment must be cut off, and equipment handover procedures must be completed.

       4. After draining the internal medium of the tank, the inlet and outlet valves should be closed or blind plates should be added to isolate connected pipelines and equipment, with clear isolation signs.

       5. For tanks containing flammable, corrosive, toxic, or asphyxiating media, they must undergo replacement, neutralization, disinfection, and cleaning, followed by analysis and inspection. The analysis results must meet relevant specifications and standards. Air replacement is strictly prohibited for tanks containing flammable media.

       6. Work inside the tank must have a work permit. If work is interrupted for a long time, a new work permit must be obtained.

       7. A sample analysis must be taken thirty minutes before entering the chemical tank, ensuring that the oxygen content is between 18-23% (by volume).

       8. When entering the tank to clean toxic or corrosive residues, personal protective equipment must be worn.

       9. Any scaffolding and lifting devices that need to be set up must be secure and reliable. Throwing materials or tools in and out during work is strictly prohibited to ensure safe operations.

       10. Lighting inside the tank should use explosion-proof lamps with a voltage not exceeding 24 volts.

       11. If work inside the tank requires open flames, a hot work permit must be obtained. 12. Work inside the tank must have a designated supervisor and reliable communication measures.

       13. Upon completion, the repair personnel and supervisor must jointly inspect the inside and outside of the tank. After confirming there are no issues, the supervisor can sign the work permit before sealing all manholes.

       14. When draining water after pressure testing, it must be vented to the atmosphere to prevent vacuum formation.

Keyword： Maintenance and Inspection of Chemical Storage Tank Manufacturers and Usage Precautions

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