NV C-1A Boilers Practice Questions - Nevada C-1A Boilers Contractor Examination Exam

A method of determining oil level on tanks that do not keep a constant level. A fill-point visual or audible signal that the oil has reached a predetermined safe level. A glass gauge, or any gauge that will spill oil from the tank if the gauge breaks. A listed liquid-level indicator arranged so oil or vapor is not discharged into the building.