Boiler Operator case studies
Boiler Operator · Put your knowledge to work in context.
A Boiler Operator credential documents that a person is qualified to safely fire, monitor, and maintain steam or hot-water boilers in a building, campus, hospital, or industrial plant. It is issued at the state, provincial, or municipal level-or, in some workplaces, defined by an employer or insurer standard-so the exact requirements, exam blueprint, and renewal cycle depend entirely on the authority that will issue your certificate. The Boiler Operator case studies are 5 cases and about 2,297 words.
1Replacement Boiler Sizing for a Cycling Steam Load
A food plant has a 500 hp (about 16,700 lb/hr) fire-tube boiler at 125 psig. Actual steam demand swings between 3,000 and 11,000 lb/hr on a 20-minute cycle.
495 words, about 2 min2High CO After a Natural-Gas Combustion Tune
A 300 hp natural-gas boiler at 100 psig has just been tuned. At steady 80% load the flue gas reads 2.0% O2 dry and 600 ppm CO; stack temperature is 460°F, furnace draft is -0.02 in.
478 words, about 2 min3Feedwater Pump Cavitation at a Low Deaerator
A deaerator operates at 5 psig (about 227°F) and sits with its normal water level 8 ft above the two feedwater pumps. Each pump is rated 100 gpm at 150 psig with a required NPSH of 10 ft.
424 words, about 2 min4Softener Breakthrough and Foaming Carryover
A 200 hp, 150 psig boiler uses a sodium zeolite softener. Recent tests show feedwater hardness 1.8 gpg (as CaCO3), feedwater chloride 45 ppm, boiler water chloride 1,800 ppm, boiler water TDS 5,200 ppm, alkalinity 700 ppm, and silica 80 ppm.
427 words, about 2 min5Low-Water Trip With Water Visible in the Gauge Glass
a 250 hp, 150 psig gas-fired fire-tube boiler trips on low-water cutoff. The operator finds the burner off, drum pressure 110 psig, stack temperature 380°F, feed pump running, and the gauge glass showing water at the bottom of the visible range.
473 words, about 2 min