NJ Boiler Operator case studies
NJ Boiler Operator · Put your knowledge to work in context.
The New Jersey boiler operator license is the state credential that authorizes a person to operate and supervise boilers and associated pressure equipment. New Jersey issues seals that correspond to the pressure class of equipment you are responsible for - the Black Seal for low-pressure work and the Blue Seal for high-pressure work - so employers, insurers, and inspectors can tell at a glance what an operator is qualified to run. The NJ Boiler Operator case studies are 5 cases and about 4,132 words.
1The Weeping Relief Valve and the Weekend Heat Demand
A 40-unit apartment building is heated by a 1950s cast-iron sectional boiler whose nameplate reads 15 psig maximum working pressure, steam. On Friday afternoon the relief valve on the boiler top begins weeping steadily at about 8 psig on the boiler gauge.
795 words, about 4 min2Yellow Flame and Rising CO at Low Fire on a Gas-Fired Boiler
A 300 hp firetube boiler burning natural gas was tuned last month: at high fire, 3 percent O2 and 35 ppm CO; at low fire, 6 percent O2. This week the operator reports that at low fire the flame is yellow-tipped, the flame signal has dropped from 8 to 4 microamps, flue CO has climbed to 700 ppm, and stack temperature is up 45 degrees F.
824 words, about 4 min3Repeated Low-Water Trips on a Cold Monday Morning
Monday, a 100 hp low-pressure steam boiler in a school trips on low water twice in twelve minutes while warming a cold building. The gauge glass reads at the bottom of the visible range; the glass was blown down, the flow sputtered weakly then steadied, and the level read the same.
823 words, about 4 min4Cold Start After Layup: Warming a 200-Foot Header
It is the first cold start after a seven-month wet layup of a 150 psig, 25,000 lb/hr packaged boiler. The boiler was drained, inspected internally, refilled with treated water, and the burner was lit at low fire at 7:00 a.m.
865 words, about 4 min5The Plugged Safety Valve, the Lapsed Certificate, and the Wrong License
You are the chief engineer at a 12-story office building with two 150 psig, 500 hp firetube boilers. A licensed high-pressure operator is required on duty whenever either boiler is in service.
825 words, about 4 min