Stationary Engineer local 99| 214 questions| with complete solutions
Question 1: 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
Question 2: 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%
Question 3: 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)\nTH=(60 x
2.5) + (18 x 4.1)\nTH= 150+73.8 =( 223.8 PPM)
Question 4: How often should a complete external inspection of
the boiler be done?
CORRECT ANSWER: Once a Shift
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