City of Omaha 3rd Grade N.A.P.E. Stationary Engineers Test Completed With A+ Graded Answers

How can you lose your license? - Correct Answer Drinking on the job / sleeping on the job / negligence / unsafe work / failing to renew your license annually / signing a falsified licensing application for someone What must you do if you change jobs? - Correct Answer You must notify city hall if you change jobs, change your address or if you retire Why should you do rounds? - Correct Answer You do rounds so that you can find and correct problems to prevent break downs. Keeping permanent records will make it easier to forecast most breakdowns because you will get to know your equipment. What is a steam Boiler? - Correct Answer A steam boiler is a closed vessel PARTIALLY FILLED with water, under pressure, that transforms water into steam with the application of heat. What are requirements of a good boiler? - Correct Answer 1. simple 2. designed to accommodate expansion and contraction 3. adequate steam and water space 4. efficient 5. responsive to demands 6. accessible for cleaning and repair 7. safe Name and describe three types of heat transfer used in boiler operation. - Correct Answer RADIANT HEAT-is heat radiated from a hot to cold body and depends on the temperature difference and the color of the body that receives the heat. The heat from the sun reaches us by means of radiation. CONDUCTION HEAT-is heat that passes from the gas to the tube by physical contact. The heat passes from molecule of metal to molecule of metal with no displacement of the molecules. CONVECTION HEAT-is heat transmitted from a hot to cold body by movement of the conveying substance. What is a combustion chamber? - Correct Answer The area of a boiler where the burning of fuel occurs