Which of the following statements concerning fire-tube boilers is correct?()
Which of the listed types steam traps operates on the principle that hot water flashes to steam when its vapor pressure is rapidly reduced?()
The internal part of boiler should be cleaned by yard if found ().
The water level in a steaming auxiliary boiler will always ()
The purpose of a temperature sensing device installed in the stack of a small automatically fired auxiliary steam boiler is to secure the oil burner()
What is NOT a function of the steam drum of a marine water-tube boiler().
When a boiler is operating, the water level in the gauge glass reads () when the boiler is shut down.
The valve that prevents water from backing out of the boiler into the feed line is the().
In an auxiliary boiler steam and water system, the highest pressure will be in the ().
(), iea steam cooler, may be filled in the boiler system to control the superheated steam temperature.
The maximum pressure developed by a waste heat boiler is determined by the main engine exhaust ().
A () boiler is an auxiliary boiler sometimes included in a steamships installation for supplying steam to auxiliaries in port.
Steam fog is most likely to occur on the Mississippi and Ohio Rivers in().
Which of the following statements concerning the water tube and fire tube boilers is not true?()
Which one is not the normal operation for boiler shutdown?()
() should be tested and adjusted when the boiler survey is carried out.
The boiler is fired () the demand for steam exceeds that available from exhaust gas heating.
The purpose of the safety relief valves installed on an auxiliary boiler is to ().
The() is a smaller valve fitted in the auxiliary steam supply line, and is usually of the non-return type.
The furnace of an oil fired boiler should be () before the operating burner is lit.
The purpose of the programmed purge cycle on an automatically fired auxiliary boiler is to()
As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: () (1) secure oil to fires (2) increase feed pump pressure
The steam supply to the heaters is controlled by the (), which must be sited in close p
As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: (1) secure oil to fires; (2) increase feed pump pressure.