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Plant operations BOMA Pre-quiz Answered 100- Correct
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Plant operations BOMA Pre-quiz Answered 100- Correct
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Plant operations BOMA Pre-quizAnswered 100% Correct
10 psig is equal to? - ANS-24.7 psia
A cushioned check valve is used for? - ANS-An automatic non-return valve
A Deaerator tank 10 feet high has how much head pressure? - ANS-4.33psig
A draft gauges measures? - ANS-Inches of H2O
Inches of water
For pressure
For vacuum
A flame scanner monitors? - ANS-The pilot and the main flame
A PH of 7.2 would be? - ANS-Slightly Alkaline
A three element feed water regulator measures? - ANS-1. Drum water level
2. Steam flow
3. Water flow
Acceptable PH levels of the boiler water might be? - ANS-9PH - 11PH
Air compressors require? - ANS-Detergent free oil
And high temp oil
Air over the stoicometric amount of air is called? - ANS-Excess
Before firing a boiler, it must FIRST? - ANS-Prepurge
Boiler draft is the difference in _______ between two points. - ANS-Pressure
Boiler efficiency is increased by? - ANS-Open feed water heaters, air preheaters, closed
feed water heaters
Boilers are required to have how many pressure gauges? - ANS-1
Boyle's law deals with? - ANS-Expansion and contraction of gases
Carbon monoxide, carbon dioxide and oxygen are measured with a? - ANS-Orsat
analyzer
, Centrifugal pumps differ from reciprocating in that they are? - ANS-Dynamic
displacement
Closed feed water heaters are fed by the? - ANS-Open feed water heater
Condensate return water should be maintained at a PH of? - ANS-7-8
Corrosion in condensate lines are caused by? - ANS-O and CO2
Draft is measured by receiving pressure across? - ANS-Venturi,
Orifice plate,
Flow nozzle
Feed water is typically heated with? - ANS-Waste or extract steam
Feed water pumps need to be isolated with what type of valve? - ANS-Gate valve
Feed water pumps take water from the? - ANS-Open feed water heater
Fires that are burning liquids are class ____ fires. - ANS-Calls B
For control of efficient combustion, we have? - ANS-Air-tight setting
Fuel gases can can leave at high temperatures. We can recover some of this heat using
a? - ANS-Economizer
Heat resulting in temperature change is? - ANS-Sensible heat
Heat transformed by movement of a fluid is? - ANS-Convection
High vibrations in a feed water pump could be caused by? - ANS-Hot feed water
How is an oils velocity affected by heating? - ANS-Lowers the oil's viscosity
How many fittings can be attached to a high pressure boiler? - ANS-Threaded, certified
welds, flanges
How many tricocks are on old large boiler? - ANS-3
How often should motor bearings be greased? - ANS-By manufacturers specifications
Impurities on the surface of the water cause increase in the surface tension and then? -
ANS-Foaming
In a water tube boiler, what tubes feed water to the mud drum? - ANS-Down covers
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