4th TSSA Part B Test (I) 150 Questions with 100% Correct Answers | Verified | Latest Update 2024

When a combustion air opening is equipped with dampers, the dampers must be - interlocked with the burner, and fully open before starting the boiler. R4B A substance that absorbs humidity inside a boiler during dry layup is: - Activated alumina (4-142-1.3) The high oil temperature shutdown device of an oil-fired heater senses the: - Oil temperature at the furnace outlet R4B A boiler furnace pre-purge: - must last a specific amount of time. R4B In a building plumbing system, the potable water pressure should not drop below: - 175 kPa (4-066-1.13) Which of the following is an example of a dissolved solid? - Magnesium sulphate (4-143-2.11) "Barking", as it occurs in a pulp mill, means: - The removal of bark from the logs R4B A collar thrust bearing: - Has boundary lubrication