Minnesota Special Boiler License Exam Study Guide for MHS Custodians: Guaranteed A+ Score Guide Solution

What must be done after a hot water boiler has been drained, cleaned and refilled? (Ans- Remove air What can a special engineer operate? (Ans- In charge of 50 horsepower. Shift operator 100 horsepower high or low pressure What are the three main types of boilers? (Ans- Fire tube, water tube, cast iron sectional How much experience is required for a special license? (Ans- No experience At a minimum, what is required in a log book? (Ans- Who, what and when When in operation a 40 horsepower boiler may be left unattended for how long? (Ans- 24 hoursWhat method of testing low water cut off most accurately simulates low water? (Ans- Shutting off the feed pump and feeder valve supply and blowing down low water cutoff Low water cutoff on a hot water boiler must be able to be tested how? (Ans- Without draining the entire system Dial of a steam gauge must be graduated to not less than what? (Ans- 1 and 1/2 times the safety valve setting