What is draft on a boiler - Study guides, Class notes & Summaries

MN Boiler License Questions and Answers Already Passed a question an answer what are the conditions necessary for good combustion? a) low sulfur content b) Thermal, thermocoupler, tubular c) turbulence, temperature, time 3T's c) turbulence, temperature, time 3T's why is secondary air necessary in hand fired boilers? a) Necessary to burn the combustible gases b) if primary air should fail c) used only if sulfur content is high a) Necessary to burn the combustible gases when p...

overheating (low water) or thermal shock What is the maximum size of safety valve permitted on a heating boiler? - Answer-4 1/2 inches What is the function of a boiler vent? - Answer-It is used to vent air from the boiler when filling with water or warming the boiler, and to prevent vacuum from forming when taking the boiler offline. What is the function of low water fuel cut-off? - Answer-It shuts off the boiler burner in the event of a low water What is the function of the operatin...

Stationary Engineer Exam - Questions and Answers (Complete Solutions) How much clearance from the top of the boiler is needed for a HP boiler that produces 70000 lbs of steam? 7 feet On a gas fired boiler what is the proper gas to air mixture 30%-70% and in special arrangements it can be as high as 100% . ANSWER CHAPTER 11 remember% What is the total hardness in a system that was found to have calcium hardness of 60ppm and magnesium hardness of 18ppm and carbon hardness of 12 ppm? TH= (Ca x 2....

G2 Questions and Answers with Verified Solutions What is the min. diameter for a leak test gauge? 3" Amp meter can read? Conductor magnetic field. What would the primary voltage to the furnace be? 120/1/60 What is the function of the intermittent pilot? Stays on during the main burner operation. What is the millivolt power output of a closed circuit thermocouple? 10 - 15 mv dc A pilot with a lazy yellow flame indicates? Orifice is too large. For flame rectification the most important part...

ABSA 5th Class | 250 Questions | With Completed Solutions Where are the return openings located regarding air distribution systems? -Answer-Return air openings are located on inner walls. The minimum temperature of the water used in a hydrostatic test of a boiler cannot be less than what temperature? -Answer-20 degrees Celsius Which of the following are causes of pressure explosions? 1. effects of corrosion 2. weak pilot flame 3. stressed material due to heating too quickly 4. insuffic...

Ohio Stationary Steam Engineer Exam - Questions with Verified Answers A boiler has carried a large slug of water over into steam. This condition is called: Priming How do steam separators work? they cause a sudden change in direction that throws water out On a pressure gauge what is the minimum size piping that can be used? 1/4" if copper 1/2" if steel When may copper tubing not be used? over 406 degrees What common type of expansion joint is used universally throughout a steam distribution ...

ABSA 5th Class Exam Questions and Answers 100% Pass Where are the return openings located regarding air distribution systems? - Answer- Return air openings are located on inner walls. The minimum temperature of the water used in a hydrostatic test of a boiler cannot be less than what temperature? - Answer- 20 degrees Celsius Which of the following are causes of pressure explosions? 1. effects of corrosion 2. weak pilot flame 3. stressed material due to heating too quickly 4. insufficie...

Gas Fitter 2 Practice Test Exam 2024 Questions and Answers. A room heater installed in either a sleeping area or public area shall be: A. direct vent only B. equipped with a regulator C. equipped with a fan D. equipped with an on / off switch on the wall - correct answer -B What type of vent must be used when the vent of a wall furnace will be concealed in a partition wall? A. B vent B. L vent C. BH vent D. BW vent - correct answer -D Single wall vent connectors: A. may pass through ...

3rd Class Stationary Steam Engineer License Prep - Complete Solutions (Answered) __________ steam turbines allow condensate to be reclaimed for use in the system Condensing With water at a temperature of 212°f, 1 bhp is equivalent to the evaporation of 34.5 lb of water every ________ hour(s) 1 In a closed feedwater heater, the _________ Steam and water do not mix Sensible heat is heat that ______ changes the temperature of a substance but not its state When performing a hydrostatic test on a ...

Oil burner's Test Questions 1-200 ( Answered ) Oil burner's test questions 1-200 In an electric circuit for the wattage to remain the same if the voltage drops, the amperage must - ANS Increase Atomizing type burners were designed to burn which type of fuel - ANS Type 2 fuel oil Pour point problems with outside above ground fuel tanks can be partially relieved by - ANS Reducing the pour point of No. 2 fuel oil by blending it with No. 1 fuel oil. A fuel oil storage tank ...