Boiler Operator Exam Questions With Answers Latest Updated 2023/2024 Graded A+

Boiler Operator Exam Questions With Answers Latest Updated 2023/2024 Graded A+. What is the first thing a boiler operator must do when taking over a shift? - Answer Report to work 10 to 15 minutes early. Check the water level on all the boilers on the line by blowing down the gauge glass, water column, and low water fuel cutoff. What are different ways of getting water into a boiler? - Answer are the vacuum pump, feedwater pump, automatic city water makeup feeder, and hand-operated city water makeup valve. What is the function of a pressure control? - Answer The pressure control is sensitive to pressure and controls the boiler operating range. It starts and stops the burner on steam pressure demand. How are safety valves tested? - Answer tested by hand or by pressure. How often should safety valves be tested? - Answer 2. low pressure boilers should be tested by hand once every 30 days the boiler is in operation. The ASME code also recommends the testing of safety valves under pressure once a year, preferably before the start of the heating season. In addition to the ASME code, safety valves should be tested according to recommendations of the local boiler inspector. 6.What is the function of a low water fuel cutoff? - Answer to shut the burner off to protect the boiler heating surface from becoming overheated due to low water in the boiler. How is a low water fuel cutoff tested? - Answer The two methods of testing a low water fuel cutoff are by hand or by an evaporation test. When should a safety valve pop on a low pressure steam boiler? - Answer A safety valve must pop (open) whenever pressure exceeds the safety valve setting to prevent the boiler from exceeding its MAWP. what pressure should a safety valve pop on a low pressure steam boiler? - Answer The safety valves on low pressure steam boilers are set to pop open at 15 psi what does Boiler Operator Exam Questions With Answers Latest Updated 2023/2024 Graded A+ "purging the furnace'' mean ? - Answer when the burner fan blows air into the furnace to remove any mixture of gases or fumes of a combustible nature that might cause a furnace explosion What is the most important valve on a boiler? - Answer safety valve How often should a steam boiler have a bottom blow down? - Answer whenever tests of the boiler water indicate high chemical con- centration or high total dissolved solids How is a flame scanner tested? - Answer One method is to remove the scanner from its sighting tube and cover it with your hand, which should shut off the burner. The second method is to secure the fuel going to the burner to simulate a fuel failure, which should cause the scanner to shut the burner off on safety lockout. What methods can be used to determine the water level in a boiler? - Answer blow down the gauge glass and watch the action of the water leaving and returning to the glass. The second method is to use the three try cocks and observe what comes out of the top try cock, middle try cock, and bottom try cock when they are opened. With an NOWL, the top try cock should discharge steam, the middle try cock should discharge a mixture of water and steam, and the bottom try cock should discharge water.