Ohio Boiler Test Flashcards

The pressure at the base of a vertical foot of water is:

When performing a hydrostatic test, the pressure on the boiler should be increased to:

A boiler steam pressure gauge should have a range of:

The maximum size of the bottom blowdown line and the surface blowdown line is:

During startup, the boiler vent should remain open until a pressure of:

No. 6 fuel oil must be heated to reach the required temperature for combustion.

No. 6 fuel oil must be heated in order to be pumped.

Fuel oil heaters must be used when burning:

Water weighs approximately:

In order to burn 1 lb. of fuel, approximately how much air is needed?

A low pressure steam boiler has a maximum allowable working pressure (MAWP) of up to:

A boiler generating 20,000 lb of steam/hr must be supplied with at least:

Needed for the combustion of fuel is made up of approximately:

The automatic non-return valve on a boiler being cut in on a line should be opened when the steam pressure on the boiler reaches:

A sudden drop in boiler steam pressure without a corresponding drop in boiler water temperature could result in a boiler explosion.

Super heater tubes are protected from warping or burning out by:

Because of the large volume of water, the boiler most likely to cause a boiler explosion is:

Stays and braces are needed to prevent bulging in:

After a boiler has had major repair work made on its steam or water side or has developed a low water condition, it should be subjected to:

An indication of a dirty fuel oil strainer would be:

If air supplied for combustion mixes with gases of combustion, it could lead to a loss of air for combustion and lower boiler efficiency.

Chemicals added to the boiler water change the scale-forming salts into:

The purpose of a flame failure control is to protect the boiler from:

To eliminate the danger of a furnace explosion during startup, the firing sequence must first allow for:

A secondary means of determining water level in a boiler are:

The boiler steam-pressure gauge is protected from high temperatures by:

The rotary cup burner atomizes fuel oil using:

Flow meters measure:

The open feed water heater is located:

The positioning combustion control system used on older boilers cannot function without air pressure.

The air-to-gas ratio is maintained by a(n):

Draft is defined as:

On the fuel oil system, the purpose of the duplex strainers on the suction line between the tank and fuel oil pump is:

The cold lime-soda process is used to:

Safety valve connections must be approved by the American Society of Mechanical Engineers (ASME).

An accumulation of combustible gases can cause a furnace explosion.

New or re-tubed boilers should be cleaned with:

An boiler accumulation test is conducted to:

The underfeed stoker can burn:

In a water tube boiler, heat and gases of combustion pass:

A solenoid valve is:

A fire caused by oil, gas, grease, or paint is classified as:

A balanced draft system is defined as:

What is extracted from the turbine after it has passed through some of the turbine stages to be used for process work and heating?

Test the safety valve on an incoming boiler by hand:

Super heater safety valves are set to open before the main safety valves are set to open.

The induced draft fan is located:

A quick-opening valve is used as a bottom blowdown valve:

The type of coal most likely to have problems with spontaneous combustion when being stockpiled is:

Blowdown tanks are used to:

When testing a safety valve by hand, there must be:

Feed water regulator sensing elements are located:

Draft in the boiler is measured between what two points?

Designed to direct the gases of combustion so that they come into close contact with the boiler heating surface are called:

The boiler vent should be opened when the steam pressure in the boiler has dropped to:

Deciding the frequency of blowdown of a boiler is determined by a:

Cyclone separators are used in:

Larger steam boilers that are equipped with air heaters and/or economizers must use both forced and induced draft fans.

The purpose of the scanner is to:

The scanner must be installed on the front of the boiler to:

Duplex strainers are found on both the suction and discharge sides of the fuel oil pump.

A high water level condition in the boiler can be corrected by:

The heating value of a fuel is expressed in:

The volume of gas to the burner in a high pressure gas system is controlled by:

The low water fuel cutoff control can be tested by:

Pulverized coal has the consistency of talcum powder so that it can come in closer contact with oxygen for complete combustion.

Anthracite coal has a high carbon content.

The Orsat gas analyzer measures the percentage of:

A combustible found in fuel includes:

Small amounts of water that leave the boiler with the steam are called:

Caustic embrittlement is defined as:

Boiler water having high alkalinity could develop caustic embrittlement.

Steam separators work on the principle of:

Regardless of the type of fuel being used, before lighting off a boiler during a cold start-up, the operator must first:

The feed water stop valve on the feed water line is located closest to the shell of the boiler so that the:

Plant emergency procedures should be established by:

The purpose of the fuel oil return line is:

The boiler must be cleaned on both the fire and water sides to prepare it for inspection.

The free-blowing drain between the boiler's automatic non-return valve and the main steam stop valve should be closed as soon as the boiler is cut in on the line.

When a boiler is being inspected, the two main steam stop valves are closed, locked, and tagged.

External feed water treatment conditions the feed water before it enters the boiler and can be a(n):

When all the fuel is burned using the minimal amount of excess air, it is called:

Carbon dioxide (CO2) in the flue gas indicates complete combustion.

Types of combustion include:

The boiler should be laid up completely dry if there is a danger of the boiler freezing.

Steam that has lost its heat and has turned back into water is called:

If the temperature of air entering the heater gets too low, it can cause condensation on the gas side of the air heater.

Maintenance work performed inside a boiler requires a confined space permit that contains procedures to prevent possible injury from hazards.

Closer control of boiler water chemical concentrations is maintained by:

The programmer in the ON/OFF control system is used to:

Steam impinging on boiler tubes would:

The frequency of blowing down a steam boiler is best ascertained by:

Fuel oil with a low flash point would be dangerous to use.

The degree of hardness of the coal is referred to as:

Most thermometers used in a steam plant are calibrated in:

A gas pressure regulator is used to control:

The sequence of three numbers found on the data plate attached to a reciprocating feedwater pump indicates the:

Natural draft is produced by:

To reduce the heat loss of flue gases going to the chimney, boilers are equipped with:

If a boiler that was on-line is down because of low steam pressure, the cause is: