High Pressure Boilers Exam (Semester 1)

Even though the modern boiler is automated for easier operation, it requires what?

Define "Steam boiler"

Define "Hot water boiler"

What is the provincial legislation's definition of a boiler?

Define "Baffle"

What are "Blowdown valves" used for?

"Blowdown valves" can take on various forms. Name 2 types.

Define "Boiler failure"

Define "Combustion Chamber"

Combustion gases are also known as:

Define "Combustion gas pass"

Define "Condensate"

What is another name for the "drum"?

Define "Externally fired boiler"

Define "Feedwater"

In a "Firetube boiler", where does the flue gases travel?

Define "fitting"

Define "Flame scanner"

Define "Forced Draft Fan"

Define "Gauge Glass"

What needs to be checked weekly on a Generally Supervised Boiler?

Define "Handhole"

Define "Header"

Define "Heads"

If the shell contains tubes which are held in position by the heads, they are called:

Define "Heating surface"

What is another name for high-pressure boilers?

Important points regarding Hot water boilers are:

Name 3 different types of Hot water boilers:

According to ASME, Section VIII (8), hot water supply boilers (hot water tanks) are not considered heating boilers unless one or more of the following conditions are met:

Define "Induced draft fan"

Internally-fired boilers are:

Lowest Permissible Water Level (LPWL) is:

What is the LPWL for Heating boilers, Power boilers and HRT boilers?

Low-pressure steam boilers do not operate above:

Low-Water Fuel Cutoff is what?

Define "Manhole"

Pressure gauges are also known as:

What is a rupture disk?

What is a safety valve?

What is a "setting"?

Define "Steam space"

Define "Waterleg"

Define "Windbox"

In a boiler, what steam generating parts must be covered by water?

What does a "Steam gauge" indicate?

What is the earliest form of steam boiler?

Why were these early types of boilers inefficient?

An efficient boiler should be designed to:

What is the process name for thermo-flooding boilers which inject large amounts of heat energy into geological formations?

An example of a boiler fitting would be a:

A watertube boiler is a boiler in which:

A _____ is a water-filled section, which surrounds the firebox in a locomotive boiler.

A device that normally uses air or steam to do its job is the:

When part of the firetube boiler itself, heads are commonly called:

The steam space of a boiler must be large enough to:

A hot water boiler is considered a high temperature water boiler when:

The windbox of a boiler is:

A safety valve is a fitting that will prevent the boiler pressure from exceeding a set maximum by:

HRT stands for:

Firetube boilers consist of:

Firetube boilers feature:

Downside to additional passes in a firetube boiler is:

To maintain flue gas velocity, what must be done?

HRT Boilers are some of the _____ types of firetube boilers.

Locomotive type boilers are _____ fired which has a capacity up to _____ kg/h at _____ kPa and are surrounded by _____ on four sides.

Where are Locomotive type boilers typically found?

A locomotive boiler, with waterleg that extends only down the sides is called _____.

A locomotive boiler, with a waterleg that encloses the bottom of the furnace is called a _____.

Downsides to the locomotive type boiler:

The firebox boiler is an _____ fired boiler.

Firebox boilers are _____, _____ and _____.

Firebox boilers have similar downsides to the locomotive type, which are:

Firebox sometimes utilise _____.

Scotch Marine Boilers are the _____ of the modern package firetube boiler.

What do "dry pipes" do?

The Scotch Marine Boilers are horizontal and _____ fired.

Scotch Marine Boilers that utilise a waterleg are commonly used in a _____.

Scotch boilers incorporate what kind of furnace?

What is the benefit of a corrugated furnace?

ASME, Section IV (4), HG-101.1, identifies steam heating boilers as not exceeding _____ kPa and hot water heating boilers as not exceeding _____ degrees and _____ kPa.

Vertical firetube boilers are _____ pass.

A common type of vertical heating boiler is the _____ boiler.

Lower part of these types of boilers is the:

Baffles are installed inside the tubes and are made out of:

This gives the gas a _____.

A problem with early firetube boilers was:

Modern package firetube boilers come ready for _____.

Another upside to the modern package firetube boiler is it requires:

5 advantages of a modern packaged firetube boiler:

Key advantage of a modern packaged firetube boiler:

An advantage of a locomotive boiler over other boilers of the era was:

An internally fired boiler:

A corrugated furnace gives required strength with thinner metal, increases heating surface and:

In regards to assembly and transportation of a packaged firetube boiler it comes:

Which one of the following is NOT an advantage of a packaged firetube boiler? (Hint: the reason why large plants use watertube boilers)

An advantage of a vertical firetube boiler is that it requires:

When a packaged firetube boiler is designed as a power boiler rather than a heating boiler:

A vertical firetube boiler is divided into a lower section, called the furnace, and an upper section called the:

To maintain high velocities through all gas passes in a 4-pass firetube boiler, the cross-sectional area of each succeeding pass is:

A reason for preferring copper tubing in a tubular boiler is:

Immersion boiler tube bundles:

To prevent flue gas leakage from the furnace of a packaged watertube boiler:

Electric boilers don't require a:

A packaged watertube boiler having two mud drums is the:

The amount of current passed through the water of an electrode boiler depends on the:

What safety device is not required on an electrode type boiler?

An initial problem with the tubular watertube boiler being used in steam service was:

In order to keep the concentration of dissolved solids within safe limits, the packaged tubular steam boiler utilises an:

The use of bent tube boiler designs allows the furnace wall to be lined with tubes, thereby exposing more of the heating surface to:

The steam produced by an electrode type boiler depends on the:

An advantage of a packaged, low pressure tubular or watertube boiler is:

The operating voltage for an electrode boiler may be as high _____ volts:

Large steam generating units are designed to produce high pressure superheated steam for the purpose of:

One advantage of the low-pressure serpentine watertube boiler is that:

Most electric boilers are limited in pressure to about 2100 kPa, due to the effect of high temperature on the:

The copper tube tubular boiler can be either?

The furnace walls in a bent-tube watertube boiler are formed by water filled tubes called:

A reason for preferring copper tubing in a tubular boiler is:

The purpose of a superheater is to:

A _____ boiler incorporates a basket and a basket drain valve.

Air heaters are implemented in steam generating units in order to:

Watertube boilers are better suited to high pressure because:

In a straight tube design (longitudinal), how is the water fed to the rear header?

A cross drum straight tube boiler could have more _____ than a longitudinal type:

What are the most common type of water tube boilers?

What is sometimes a problem with "A" type boilers?

What is sometimes a problem with "D" type boilers?

What is another name for the Four-Drum Bent Tube Boiler?

On a packaged watertube boiler may contain _____ _____ in front of the watertube walls due to the _____ _____ of the _____.

Another downside to the packaged watertube boiler are: (Hint: transportation)

Steam generating units would not utilise a _____.

What is the most economical fuel to use in a steam generated unit?

Where are convection superheater tubes located?

What does the economiser do?

Where is the economiser located?

What do air heaters do?

Why do we build large generating units?

Low pressure heating boilers operate below 103 kPa and 121 degrees. But in some jurisdictions/provinces its:

What's another benefit to the low pressure, serpentine type watertube boiler?

Tubular steam heating boilers are used in conjunction with _____ _____ to keep salt concentrations down.

Why is softened water used as feedwater?

What are some advantages of the low pressure watertube and tubular type boilers?

How does the immersion heater boiler differs from the electrode boiler?

Control of the immersion heater boiler is accomplished by turning on and off the power supply to:

Immersion heaters are arranged in the boiler so that they are easily accessible for:

Another downside to immersion type boilers:

An immersion type electric boilers capacity can be as high as:

Control of the immersion heater boiler is done by turning on and off the:

Radiographic images are taken using:

Firetube boilers have their tubes fixed into flat steel plates called:

Boiler shells and drums commonly range in thickness from _____ to _____.

One non-destructive test on the boiler is the _____ test.

The circumferential weld joints that attach dished heads to a boiler drum are:

Who checks that the welding procedures used by a manufacturer in the fabrication of a boiler are correct?

The circumferential seam of a riveted boiler shell utilised the:

A tube expander is used to:

Beading the tube ends in a firetube boiler:

Tubes for high pressure service are usually:

Boiler stays are:

Stays are not normally required in watertube boilers because:

In firetube boilers, _____ stays are often used to support the flat surfaces above the tubes:

A major force that holds the manway door of the boiler drums in place during operation is the:

Man holes are:

Corrugated furnaces permit what?

A morrison furnace is found where?

Top supported boilers:

One advantage of a water cooled boiler furnace is:

One way to increase natural draft is to:

A characteristic of mechanical draft is that the draft:

Natural draft is produced in a boiler furnace when:

In a forced draft course, the furnace pressure is:

An induced draft fan operates at much higher temperatures than a _____.

When an air heater is used in a boiler:

In a balanced draft course, the air heater is located:

The advantage of a steel stack over a reinforced concrete stack is that a steel stack:

With an axial flow fan, the air flow:

When draft is produced by natural means:

A more durable chimney for a power plant application is the _____ chimney.

Boiler chimneys are commonly lined with:

The most efficient operation of a fan occurs when:

Proper draft is important to the plant operator because it:

When the least amount of energy is desired to drive a fan with variable output control, the type of control used would most likely be:

With fan output damper control:

The inclined U tube manometer is more accurate than a _____.

A diaphragm type pressure gauge is used to measure very _____ _____.

If one end of a "U" tube is connected to the discharge of a forced draft fan the:

Post weld heat treatment removes residual stresses left by:

The area below the tubes is often supported by ______ or _____ stays.

Elliptical manhole opening size:

Diameter of a circular manhole must be:

ASME Elliptical manhole opening size:

ASME diameter for a circular manhole:

ASME handholes:

Three types of furnace walls:

A draft gauge on a furnace indicates the draft in: