Tanks & Vessels Flashcards
______ are containers that are used to store or hold refinery fluids.
a. furnaces
b. tanks
c. vessels
d. substations
e. both b and c
e. both b and c
True or False
Tanks are used to store large quantities of any type of fluid, such as crude and refined
petroleum products, acids and bases, waste fluids, toxic or hazardous substances, and
by-products from process units.
True
True or False
The usage of tanks for storage helps in preventing the contamination of the fluids stored and the evaporation of volatile materials.
True
Vessels are used to:
a. Store materials associated with production processes
b. Mix or blend two or more process materials
c. Separate two or more process materials
d. Supply power to the control room
e. a, b, &c
e. a, b, &c
a. Store materials associated with production processes
b. Mix or blend two or more process materials
c. Separate two or more process materials
_____ are used to store liquids with low volatility.
a. pressurized tanks/spheres
b. nonpressurized tanks
c. nonpressurized vessels
d. pressurized vessels
b. nonpressurized tanks
_____ are used to store liquids or gases with high volatility.
a. pressurized tanks/spheres
b. nonpressurized tanks
c. nonpressurized vessels
d. pressurized vessels
a. pressurized tanks/spheres
_____ are used for processing liquids and solids with low volatility.
a. pressurized tanks/spheres
b. nonpressurized tanks
c. nonpressurized vessels
d. pressurized vessels
c. nonpressurized vessels
_____ are used for processing volatile materials, including liquids, gases fluidized solids, and granulated solid slurries.
a. pressurized tanks/spheres
b. nonpressurized tanks
c. nonpressurized vessels
d. pressurized vessels
d. pressurized vessels
Pressurized tanks are used to store __________.
a. Fluidized solids with high volatility
b. Gases with low volatility
c. Liquids with high volatility
d. Liquids with low volatility
c. Liquids with high volatility
Which of the following statements on vessels is true?
a. Vessels are used for blending two or more process materials
b. Vessels are located outside process units in a refinery
c. Vessels are used for long-term storage of materials
d. Vessels are generally larger than tanks
e. All of the above
a. Vessels are used for blending two or more process materials
What is a nonpressurized vessel used for?
a. Processing fluidized solids and granulated solid slurries
b. Long-term storage of liquids or gases with low volatility
c. Long-term storage of liquids or gases with high volatility
d. Processing liquids and solids with low volatility
d. Processing liquids and solids with low volatility
Which component of a tank is designed such that it prevents leakage of the vapor contents of the tank. It is either cone-shaped or rounded to allow precipitation to run off.
a. Shell
b. Manway
c. Gauge Hatch
d. Roof
d. Roof
A _____ is a shallow catch basin built into the floor of the tank, near the edge, to collect any excess water.
a. mixer
b. steam coil
c. suction swing arm
d. water draw
d. water draw
What is a commonly used type of automatic tank gauging system that provides a noncontact, nonintrusive method of tank gauging?
a. Float Tape
b. Radar
c. Local level indicator
d. Sight glass
b. Radar
_____ are installed at the top of the tank to allow the entry of air or inert gas into the tank.
a. vortex breaker
b. vertices breaker
c. vacuum breaker
d. breather valve
c. vacuum breaker
A ________ is made of two crossed vertical plates that are welded over the bottom
outlet pipe of a tank. It is used in tanks handling liquids.
a. vortex breaker
b. vertices breaker
c. vacuum breaker
d. breather valve
a. vortex breaker
______ is used in crude and heavy oil tanks to ensure even distribution during the filling
operation.
a. vortex breaker
b. suction swing arm
c. steam coils
d. sparger
d. sparger
In floating-roof tanks, _______ at the edge of the tank
roof acts as a barrier to prevent outside substances from entering the tank. It also
prevents the contents of the tank from leaking to the atmosphere.
a. Base Seals
b. Roof Seals
c. Suction swing arms
d. Breather Valves
b. Roof Seals
______ is used to minimize corrosion in tanks.
a. Anodic protection
b. Electrolyte protection
c. Cathodic protection
d. Metallic pathway protection
c. Cathodic protection
_____ has a steel plate that is permanently mounted to the top of the cylindrical shell. In the event of excess pressure, or an internal explosion, this arrangement allows the roof to fail before the shell is ruptured.
a. A Floating Roof Tank
b. A Fixed-Roof Tank
c. A Geodome-Roof Tank
d. A Pressurized Tank
b. A Fixed-Roof Tank
_____ tanks are generally used to store liquids with high volatility and low flash point. The roof sits on the surface of the liquid stored in the tank.
a. A Floating Roof Tank
b. A Fixed-Roof Tank
c. A Geodome-Roof Tank
d. A Pressurized Tank
a. A Floating Roof Tank
True or False
Fixed-roof tanks are vented by a weather-protected pipe that is open to the atmosphere.
True
Also:
A special vent valve that will open automatically to release or admit vapors during
level changes
_____ is used to prevent additives from settling at the bottom and to maintain uniform composition throughout the tank.
a. pump-around/circulation
b. a deluge system
c. a fire spray system
d. a vent line
a. pump-around/circulation
_____ is used to keep the tank cool and prevent ruptures.
a. pump-around/circulation
b. a deluge/fire spray system
c. a relief valve
d. a vent line
b. a deluge/fire spray system
