Boiler and thermal-system maintenance

Boilers and thermal networks are among the largest energy-consuming systems in industrial plants. These complex systems supply steam or hot water at high temperature and pressure for production processes. Planned technical support helps maintain stable, reliable and efficient operation.

Technical support scope

ITVC Global provides technical support for organisations operating steam boilers, hot-water boilers and steam-pipe or thermal networks.

The service includes maintenance, periodic inspections and timely response to operating faults.

The following describes a professional technical service. Maintenance intervals, response times and chemical methods must be confirmed for the equipment and service agreement. BS211/BS212 names are retained from the source; material compatibility, operating parameters and disposal of spent solution must be checked against manufacturer documentation and safety data sheets before use.

Example annual maintenance programme

The activities depend on the size and capacity of the boiler and thermal network. The original article presents the following example of an annual support programme:

• Maintenance two or three times a year: Mechanical cleaning and maintenance of key parts associated with the combustion chamber, flue-gas path, air path, blowdown, feedwater, steam lines, insulation, electrical equipment and controls. The example allows two or three days for each maintenance visit.
• Periodic inspection and fault prevention: Once a month.
• Chemical cleaning of the boiler: Once a year.
• Response to operating faults: Within 12 hours of notification, as stated in the example support programme.

Equipment used

• A dedicated chemical pump for circulating the descaling solution.
• A chemical tank for the circulation process.
• Dismantling tools and other accessories.

Chemicals described in the source article

The source describes two main chemicals for two cleaning stages.

• Stage 1: The source identifies BS211 for removing calcium-carbonate, magnesium, silica and iron deposits from equipment and steel, copper or aluminium pipe surfaces.
• Stage 2: Following descaling with BS211, the source describes BS212, an alkaline and surfactant-containing compound, for surface passivation after cleaning.

Main stages of the chemical-cleaning service

1. Set up the pump, tank, chemicals and descaling pipework.
2. Test the circuit with water to check for leaks.
3. Pump and circulate BS211.
4. Allow the descaling solution to react with deposits, then carry out a second circulation stage.
5. Monitor pH stability and remove the spent BS211 solution.
6. Circulate BS212 under the approved neutralisation method; check pH and complete the manufacturer-required rinsing, inspections and acceptance checks before returning the system to service.