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

How much clearance from the top of the boiler is needed for a HP boiler that produces 70000 lbs of steam? correct answer: 7 feet On a gas fired boiler what is the proper gas to air mixture correct answer: 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? correct answer: TH=(Ca x 2.5) + (Mg x 4.1)...

What are the 3 funtions of an Oil Burner nozzle? - Answer- Atomize, Meter, Patter. What are the 2 voltage circuits of a primary control? - Answer- Line & Low. What is the function of a fuse? - Answer- Protect circuit. What is the High Limit cut out? - Answer- Max safe Temp or Pressure setting. What is the High Limit cut in? - Answer- Cut out minus Differential. What is the "Max" Lockout time for a burner with a 3 GPH Flow Rate? - Answer- 45 Seconds. What is the minimum stack ...

the process by which all forms of microbial life, including spores, are destroyed is the definition of a. sanitization b. disinfection c. decontamination d. sterilization - d. sterilization In a non table top sterilizer, a gauge on the main steam line, usually located at the back of the sterilizer, tells you the steam pressure a. inside the jacket b. inside the chamber c. as steam is entering the jacket d. as steam is exitiing the chamber - a. inside the jacket which ...

The Main function of a steam separator in a steam power plant is to correct answer: increase steam quality The MAIN purpose of a dip tube in a low-pressure hot water system is to correct answer: prevent air from entering the main The rating of a unit ventilator is usually determined by a(n) correct answer: anemometer What device is used to record the air-flow-steam-flow relationship of a boiler in a steam plant? correct answer: Steam-flow meter What gas fuel type has the highest ...

What is the pressure at the base of a vertical foot of water? CORRECT ANSWER 0.433 psi How much should the boiler pressure increase when performing a hydrostatic test? CORRECT ANSWER 1.5 times the safety valve setting The range of a boiler steam pressure gauge. CORRECT ANSWER 1.5 to 2 times the safety valve setting Fuel oil heaters must be used when burning what? CORRECT ANSWER No. 6 fuel oil What is the maximum allowable working pressure of a low pressure steam boiler? (MAWP) CORREC...

Boilermaker NCCR Test Questions And Answers Boilermaker NCCR Test 1 ft 3-3/4 in + 2 ft 1-1/16 in +5 ft 10- 7/8 in = - ANS 9 ft 3-11/16 in A 1-inch plate is to be cut. Why should an acetylene gerulator on a cutting rig not be adjusted over 15 PSI? - ANS Acetylene is unstable above this pressure A big control valve is pulled who is responsible for the rigging? - ANS Crane operator and rigger A boiler maker must have all of the following wh...

for the purpose of rating boiler horsepower for an Engineers licence only, how many square feet of boiler surface shall be equivalent to one boiler horsepower on a boiler? correct answer: 10 Sq. Ft. Heating Surface What is meant by the term Low Pressure Boiler? correct answer: boilers operating at a steam or other vapor pressure of 15 psig. or less, or a hot water or other liquid boiler in which the pressure does not exceed 160 psig. Or a temperature of 250 f°. A person holding a curren...

What does an Aquastat do? - correct answer Its an automatic operating switch (normally open). Sense water temperature of a boiler and closes when temperature drops. What does a low water cut off do? - correct answer Automatic safety control (normally closed). Senses water level in the boiler. If level drops the switch opens and shuts off the gas valve. in series with gas valve.,What does a water flow switch do? - correct answer Automatic safety control (normally open). Senses water flow an...

NAPE Third Grade Engineering Review Test Questions with Verified Solutions How Can you lose your license? Drinking on the job, sleeping, negligence, unsafe work, failing to renew license, signing a falsified licensing application. What must you do if you change jobs? You must notify City Hall if you change jobs, change address or retire Why should you do rounds? To find and correct problems, prevent breakdowns, keeping permanent records will make it easier to forecast most breakdown...

1/2" - ANSWER-Sight Glass Minimum Connection 3/4" - ANSWER-Low Water Cut-off Draw Minimum Connection 1" - ANSWER-Water Column Minimum Connection 3/4" - ANSWER-Control Manifold Minimum Connection 1/4" - ANSWER-Sight Glass Drain Minimum Connection 1" - ANSWER-Bottom Blow-Off Minimum Connection 2 1/2" - ANSWER-Bottom Blow-Off Maximum Connection 2 1/2" - ANSWER-Surface Blow-Down Maximum Connection 3" - ANSWER-Threaded Safety Valve Maximum Connection 4 1/2" - ANSW...