What are the precautions to be taken during dry preservation of boiler?

Dry preservation of a boiler involves storing a boiler in a dry state to prevent corrosion and deterioration during periods of inactivity. Here are some precautions to take:
1. Clean the Boiler: Thoroughly clean the interior surfaces of the boiler to remove any scale, debris, or contaminants that could accelerate corrosion.
2. Dry the Boiler: Ensure the interior of the boiler is completely dry before preservation. This can be achieved by using hot air blowers, heaters, or other appropriate methods.
3. Drain and Ventilation: Completely drain all water from the boiler, including pipes and tubes. Ensure all drain valves are open. Maintain proper ventilation to prevent moisture buildup.
4. Seal Openings: Seal all openings, flanges, and connections to prevent moisture from entering. Use appropriate sealing materials and methods.
5. Desiccants: Place moisture-absorbing desiccant materials inside the boiler and its components to absorb any residual moisture.
6. Inspect Regularly: Periodically inspect the preserved boiler to ensure that the preservation materials are intact and that no moisture has entered.
7. Record Keeping: Maintain detailed records of the preservation process, including dates, methods used, and inspection results.
8. Environmental Conditions: Store the boiler in a controlled environment with low humidity levels to minimize the risk of moisture accumulation.
9. Protective Coatings: Apply appropriate protective coatings to critical surfaces if recommended by the manufacturer.
10. Periodic Checks: If the preservation period is long, periodically check the condition of the boiler and its components to ensure they remain dry and corrosion-free.

Remember to follow the manufacturer’s guidelines and recommendations for dry preservation specific to your boiler model. If you’re unsure, consult with a professional in boiler maintenance and preservation.

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