Boiler

BOILER MC & ESSAY EXAM

keeps the hardness in boiler water in solution so that it cannot settle out on the heating surfaces. - ANSWER Chelants ______ cause hardness particles in boiler water to precipitate as heavy sludge that is removed through the bottom blow. - ANSWER Phosphates _______ in boiler water contributes to the formation of CO2. - ANSWER High Alkalinity #2 fuel oil contains approximately ______ Btu/gal - ANSWER 141,000 #6 fuel oil contains approximately _____ Btu/gal - ANSWER 155,000 % of oxygen ...

2.1 ½ times the safety valve setting: When performing a hydrostatic test, the pressure on the boiler should be increased to ___. 3.1 ½ to 2 times the safety valve setting: A boiler steam pressure gauge should have a range of ___. 4.2 ½: The maximum size of the bottom blowdown line and the surface blowdown line is ___". 5.3: During startup, the boiler vent should remain open until a pressure of approximately ___ psi is on the boiler. 6.6: No. ___ fuel oil must be heated to reach the re...

design allows the use of lower quality feed. It is easy to clean and easy to maintian and replace tubes. Disadvantages are the large number of handhole doors and the extensive brickwork. The drum is all welded and the casing bolted Front fired studded wall refractory covered boiler

With the steam control valve wide open during normal operation, the rate of steam flow from the auxiliary exhaust steam line to the DC heater is actually a function of __________. a. rate of condensation in the DC heater b. spring pressure of the spray valves c. water level in the DC heater reservoir d. rate of evaporation in the DC heater - Answer A In order to test the lifting pressure of the deaerating feed heater relief valve, you would __________. I. close the auxiliary exhaust dum...

On a low pressure residential steam boiler the release device opens at? - ANSWER-15 pounds If too much primary air is used the flame will - ANSWER-Lift off the burner What operates the heat anticipator in a low voltage thermostat - ANSWER-24 volts a/c A limit control is located where in the electrical circuit - ANSWER-Either the 24 or 120 V circuit What is the usual oil pressure at the nozzle in a high pressure gun type oil burner - ANSWER-100 PSIG What license is required to perf...