When the blowdown line has two seatless slow opening valves, what is the sequence in opening them?

When the blowdown line has two seatless slow opening valves, what is the sequence in opening them?

A. Valve closest to boiler open first, and closed last
B. Valve furthest from the boiler open first, and closed last
C. Valve furthest from the boiler open first, and closed first
D. Valve closest to boiler open first, and closed first





Answer: B

Which code specifies the type of valves that can be used for particular boilers?

Which code specifies the type of valves that can be used for particular boilers?

A. CSA code B52
B. CSA code B51
C. ASME VII
D. ASME I
E. ASME B31.1

Answer: E

Which code specifies the materials, pressure ratings and required sizes for blowdown piping?

Which code specifies the materials, pressure ratings and required sizes for blowdown piping?

A. CSA code B52
B. CSA code B51
C. ASME VII
D. ASME I
E. ASME B31.1




Answer: E

Blow-off piping must be made to expand and contract during temperature changes. If not it could cause?

Blow-off piping must be made to expand and contract during temperature changes. If not it could cause?

A. The boiler to explode
B. Cause stress on boiler parts
C. Water hammer
D. All of the above

Answer: B

Which code requires the installation of a blow-off vessel or other suitable registered device for all boilers operating above 103kPa, if the vessel discharges into the sewer system?

Which code requires the installation of a blow-off vessel or other suitable registered device for all boilers operating above 103kPa, if the vessel discharges into the sewer system?

A. CSA code B52
B. CSA code B51
C. ASME VII
D. ASME I
E. ASME B31.1





Answer: B

The greatest concentration of undissolved solids in a package watertube boiler is at __ and for firetube boilers is at __

The greatest concentration of undissolved solids in a package watertube boiler is at __ and for firetube boilers is at __

A. Water level, mud drum
B. Boiler shell, water level
C. Mud drum, boiler shell
D. Mud drum, water level
E. Water level, boiler shell





Answer: C

Another term for intermittent blowdown is?

Another term for intermittent blowdown is?

A. Bottom blowdown
B. Below blowdown
C. Waterside blowdown
D. Slow blowdown




Answer: A

Hot blowdown water flows from the boiler through the CBD line to the __

Hot blowdown water flows from the boiler through the CBD line to the __

A. Deaerator
B. Feedwater pump
C. Heat exchanger
D. Blow-off tank





Answer: C

TDS:

TDS:

A. TDS will rise and carryover could occur if the valve is not open sufficiently
B. TDS will rise and carryover could occur if the valve is open to much
C. TDS will be low if the valve is not open sufficiently
D. None of the above




Answer: A

Continuous blowdown rate depends on?

Continuous blowdown rate depends on?

A. Type of external water treatment used
B. TDS level in the boiler
C. Boiler operating temperature
D. Operator skill and training




Answer: B

TDS stands for?

TDS stands for?

A. Total dissolved solutions
B. Tank dissolved solutions
C. Total dissolved soilds
D. Tank dissolved solids



Answer: C

The type of water treatment boilers use that operate below 5000kPa is?

The type of water treatment boilers use that operate below 5000kPa is?

a. Sodium zeolite softening
b. Deaeration
c. Coagulators
d. Demineralization
e. Sludge conditioning



Answer: A

The type of water treatment boilers use that operate above 5000kPa is?

The type of water treatment boilers use that operate above 5000kPa is?

a. Sodium zeolite softening
b. Deaeration
c. Coagulators
d. Demineralization
e. Sludge conditioning




Answer: D

The boiler blowoff valves are opened and closed in a specific sequence to:

The boiler blowoff valves are opened and closed in a specific sequence to:

a. Carry out the blowdown accurately
b. Prevent excessive water discharge
c. Prevent a high level in the steam drum
d. Maintain the boiler water level
e. Protect the valve closest to the boiler






Answer: E

A blowoff tank:

A blowoff tank:

a. Is cleaned monthly to remove the collected sludge
b. Is not classed as a pressure vessel since it is vented
c. Lowers the temperature and pressure of the incoming boiler water
d. Must have a safety valve, set to the maximum allowable working pressure of the tank
e. Accommodates only one boiler




Answer: C

The blowoff connection on a boiler is located at the:

The blowoff connection on a boiler is located at the:

a. Bottom of the steam drum in a watertube boiler
b. Water line in both firetube and watertube boilers
c. Bottom of the shell in the firetube boiler
d. Top of the mud drum in a watertube boiler
e. Bottom of the steam drum of a watertube boiler



Answer: C

Water that leaves a blowoff tank and enters a sewer must not exceed _______ °C:

Water that leaves a blowoff tank and enters a sewer must not exceed _______ °C:

a. 45
b. 50
c. 75
d. 65
e. 80




Answer: D

If dissolved solids are not removed from boiler water, the result may be:

If dissolved solids are not removed from boiler water, the result may be:

a. Overheating of convection zone tubes
b. Foaming and carry-over
c. Overheating of radiant zone tubes
d. Difficulty maintaining boiler water level
e. Purer steam leaving the steam drum



Answer: B

On a boiler blowoff system, a valve that requires at least five 360° turns of the operating mechanism to change from fully open to fully closed is known as:

On a boiler blowoff system, a valve that requires at least five 360° turns of the operating mechanism to change from fully open to fully closed is known as:

a. a quick opening valve
b. a non-return valve
c. a slow opening valve
d. a high velocity valve
e. an isolating valve




Answer: C

An external water treatment method that results in minimal boiler blowdown is:

An external water treatment method that results in minimal boiler blowdown is:

a. Sodium zeolite softening
b. Deaeration
c. Coagulators
d. Demineralization
e. Sludge conditioning




Answer: D