Boiler Installation Guide: Build a Solid Foundation for Stable Operation

Boiler installation is the first step to ensuring the safe and efficient operation of your equipment. Statistics show that 30% of boiler failures are caused by improper installation. Just as a tall building requires a solid foundation, boiler installation demands strict adherence to technical standards for precision at every stage.

Preparation: Get the Basics Right First

1. Foundation Construction

The concrete foundation should have a strength of ≥C25, thickness ≥300mm, and a load-bearing capacity at least 1.5 times the total weight of the boiler. A factory once faced sinking issues due to insufficient foundation strength, resulting in pipe joint tears.

2. Space Planning

Follow the GB50041 standard for maintenance space requirements: Front of the boiler ≥3m
Back of the boiler ≥1.5m
Sides of the boiler ≥1.2m

3. Qualification Check

The installation company must hold a special equipment installation license, and operators should have the appropriate certifications.

Main Installation: Precision is Key

1. Level Calibration

Use a precision level with an accuracy of 0.02mm/m for measurement, ensuring the total deviation does not exceed 3mm.

2. Welding Alignment

Welders must hold relevant project certifications, and welds should undergo 100% radiographic inspection.

3. Insulation Installation

Follow the GB/T8175 standard for insulation thickness, and ensure the surface temperature remains ≤50°C.

Case Study: A project experienced weld crack issues after six months of operation due to poor welding quality, causing an unscheduled shutdown for 15 days.

Auxiliary Equipment Installation: Details Make the Difference

1. Pump Installation

Install vibration-damping devices in the foundation (vibration speed ≤2.8mm/s), and pressure gauges and flexible joints at the inlet and outlet.

2. Valve and Instrumentation

Install safety valves directly on the boiler drum without any valves in between. The pressure gauge should have a range 1.5–3 times the working pressure.

3. Flue Installation

Set the flue with a 0.3% drainage slope and use a forward connection at bends.

System Acceptance: The Final Step

1. Hydrostatic Test

The test pressure should be 1.25 times the working pressure (≥0.2MPa), and the pressure should be maintained for at least 20 minutes.

2. Leak Testing

Use foam agents to check all gas system connections to ensure zero leakage.

3. Safety Device Calibration

Set the safety valve opening pressure to 1.05 times the working pressure.

4. Trial Run

Conduct a continuous 72-hour trial run, recording all relevant parameters.

Common Installation Mistakes to Avoid

Never modify a pressure boiler to operate as a non-pressure boiler.
Do not install a valve at the safety valve outlet.
Do not skip water treatment system installation.
Avoid forced alignment of pipes.

Conclusion

Boiler installation is a system-wide process that requires a combination of professional skills and meticulous attention to detail. If you need guidance on boiler installation or quality supervision services, feel free to contact us. Our expert team will ensure your installation meets the highest standards, guaranteeing optimal performance and safety.