Boiler maintenance is very important, not only to ensure the safe operation of the boiler, but also improve efficiency and save costs.
Each of the industrial boiler systems has a number of devices that allow it to function efficiently and safely. Common fittings include steam traps, pressure gauges, insulation, pumps, and valves. To maintain safe and efficient boiler operation, these fittings must be maintained properly. Safety sensors, electrical circuits, and the efficiency of combustion must be checked as well.
Steam traps should be tested several times a year for proper operation. Among the common methods used to test steam traps are sight, sound, temperature, and conductivity.
For safety, any pressure gauge that seems to not be operating perfectly must be removed and checked for calibration. You can ensure pressure gauge accuracy by scheduling checks and recalibration using proper test equipment.
Pumps are one of the most common devices in central energy plants. Boiler systems use hot water, feedwater, and condensate pumps. The most common pump type is a centrifugal pump. These pumps can be tested using a variety of diagnostic equipment. A thermal imager can show water, steam, and bearing temperatures. A digital multimeter (DMM) and clamp-on ammeter will show electrical problems that can affect pump operation. Motor insulation testers will show motor problems before they occur.
Modulating valves are often used to control temperature at terminal units, air handling units, and steam to hot water heat exchangers. A valve that is malfunctioning can cause improper operation and high energy costs. You can use a thermal imager to detect small steam leaks for early valve repack and repair.
Another major area where diagnostic equipment is vital in a boiler plant is the electrical system. Measure temperature and pressure signals such as resistance, voltage, and current input sensors and compare them with factory calibration values to determine whether the sensor or transmitter is operating properly.
Businesses, in all kind of industries, use boilers to meet the energy demands of their facilities. Those needs may vary. There are two types of boilers to choose from — hot water or steam boilers. Boiler maintenance is very important, not only to ensure the safe operation of the boiler, but also improve efficiency and save costs.
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