20 Questions
Why do larger capacity steam boilers require continuous supervision?
To ensure safe and dependable operation
What are some of the safety devices that steam boiler operators must verify regularly?
Low water fuel cut-offs and limit controls
What is part of the operator’s regular inspections for steam boilers?
Flue gas temperature, quality of feed and make-up water, and heat transfer efficiency
Why do packaged steam boilers need regular attention despite being fully automatic?
To ensure safe and dependable operation
What are some of the routine activities that steam boiler operators must perform daily?
Burner operation, flue gas temperature checks, and water level monitoring
What are some of the duties of steam boiler operators with regards to boiler water?
Boiler water treatment tests, feedwater treatment tests, and make-up water monitoring
What should the operator do if the automatic system for fuel control fails?
Change over from automatic to hand control
What should the boiler pressure be between according to the operating control cut-out set point?
Between cut-in and cut-out
According to NBBI, what is recommended for the difference in pressure between the safety valve setting and the maximum boiler operating pressure for power boilers?
10% but not less than 50 kPa
What is the primary indicator of boiler water level according to the text?
Gauge glass
How often should the gauge glass and water column be blown down when little or no make-up water is required?
Weekly
What may a wide fluctuation of the water level in the boiler indicate?
Foaming or priming
What is the purpose of draining the float chamber for low water fuel cut-offs and float-type water level controls?
To remove sediment and ensure proper functioning
What is the purpose of soot blowing in a boiler?
To maintain efficient heat transfer by removing soot and ash
Why is it important to monitor the flue gas temperature, firing rate, and steam production in a boiler?
To ensure efficient heat transfer
What is the purpose of taking regular tests of water conditions in a boiler?
To prevent scale formation and ensure heat transfer efficiency
Why should excessive blowdown in a boiler be avoided?
It is wasteful and increases operational costs
What should be done if there are signs of leakage from safety valves, manholes, or clean-out plugs in a boiler?
Determine the cause, initiate work requests, and record in the daily log
Why is it important to maintain a clean boiler room and equipment?
To prevent fire hazards and ensure safe operations
What is the purpose of monitoring make-up water usage in a boiler?
To exclude oxygen from the boiler water and minimize make-up water
Test your knowledge about the supervision and safety measures required for operating larger capacity steam boilers. This quiz covers topics such as steam pressure, water level, burner conditions, safety devices, flue gas temperature, and heat transfer efficiency.
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