Podcast
Questions and Answers
What is the main purpose of a chemical feed system in a boiler operation?
What is the main purpose of a chemical feed system in a boiler operation?
- To decrease the chemical costs in boiler water
- To maintain a high-pressure, low-capacity pump
- To reduce corrosion costs and equipment damage (correct)
- To increase the steam quality
How can an inappropriately designed or inefficiently run feed system impact boiler operation?
How can an inappropriately designed or inefficiently run feed system impact boiler operation?
- It can cause poor steam quality
- It can lead to an increase in corrosion costs (correct)
- It can improve the efficiency of the boiler
- It can result in lower chemical costs due to underfeeding
What type of pump is commonly used to supply necessary chemicals to the boiler water?
What type of pump is commonly used to supply necessary chemicals to the boiler water?
- Gear pump
- Motor-driven metering pump (correct)
- Reciprocating pump
- Centrifugal pump
Why should there be a check valve between the chemical feed pump discharge isolation valve and the shut-off valve at the boiler?
Why should there be a check valve between the chemical feed pump discharge isolation valve and the shut-off valve at the boiler?
Why must a relief valve be installed on the discharge of the chemical feed pump?
Why must a relief valve be installed on the discharge of the chemical feed pump?
What is the purpose of a shut-off valve next to the boiler in the chemical feed line?
What is the purpose of a shut-off valve next to the boiler in the chemical feed line?
Why should chemical feed pumps be checked regularly and maintained according to manufacturer recommendations?
Why should chemical feed pumps be checked regularly and maintained according to manufacturer recommendations?
What is used to adjust the pump stroke in the diaphragm chemical pump?
What is used to adjust the pump stroke in the diaphragm chemical pump?
How many solenoid-type pumps are shown in Figure 6(a) supplying different chemicals?
How many solenoid-type pumps are shown in Figure 6(a) supplying different chemicals?
What must be done before adding chemicals to the feeder according to the text?
What must be done before adding chemicals to the feeder according to the text?
What is the purpose of the bypass feeder shown in Figure 7?
What is the purpose of the bypass feeder shown in Figure 7?
What is the purpose of wearing proper PPE when handling the feeder as per the text?
What is the purpose of wearing proper PPE when handling the feeder as per the text?
What prevents some pumps from operating according to the text?
What prevents some pumps from operating according to the text?
What feature does the chemical shot feeder shown in Figure 8 have, according to the text?
What feature does the chemical shot feeder shown in Figure 8 have, according to the text?
What does Figure 6(b) show in relation to one of the pumps?
What does Figure 6(b) show in relation to one of the pumps?
