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FOTP Chevron > Tanks & Vessels > Flashcards

Tanks & Vessels Flashcards

1
Q

______ are containers that are used to store or hold refinery fluids.

a. furnaces
b. tanks
c. vessels
d. substations
e. both b and c

A

e. both b and c

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2
Q

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.

A

True

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3
Q

True or False
The usage of tanks for storage helps in preventing the contamination of the fluids stored and the evaporation of volatile materials.

A

True

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4
Q

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

A

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

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5
Q

_____ are used to store liquids with low volatility.

a. pressurized tanks/spheres
b. nonpressurized tanks
c. nonpressurized vessels
d. pressurized vessels

A

b. nonpressurized tanks

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6
Q

_____ are used to store liquids or gases with high volatility.

a. pressurized tanks/spheres
b. nonpressurized tanks
c. nonpressurized vessels
d. pressurized vessels

A

a. pressurized tanks/spheres

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7
Q

_____ are used for processing liquids and solids with low volatility.

a. pressurized tanks/spheres
b. nonpressurized tanks
c. nonpressurized vessels
d. pressurized vessels

A

c. nonpressurized vessels

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8
Q

_____ 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

A

d. pressurized vessels

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9
Q

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

A

c. Liquids with high volatility

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10
Q

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

a. Vessels are used for blending two or more process materials

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11
Q

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

A

d. Processing liquids and solids with low volatility

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12
Q

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

A

d. Roof

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13
Q

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

A

d. water draw

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14
Q

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

A

b. Radar

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15
Q

_____ 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

A

c. vacuum breaker

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16
Q

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

a. vortex breaker

17
Q

______ 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

A

d. sparger

18
Q

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

A

b. Roof Seals

19
Q

______ is used to minimize corrosion in tanks.

a. Anodic protection
b. Electrolyte protection
c. Cathodic protection
d. Metallic pathway protection

A

c. Cathodic protection

20
Q

_____ 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

A

b. A Fixed-Roof Tank

21
Q

_____ 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. A Floating Roof Tank

22
Q

True or False
Fixed-roof tanks are vented by a weather-protected pipe that is open to the atmosphere.

A

True

Also:
A special vent valve that will open automatically to release or admit vapors during
level changes

23
Q

_____ 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

a. pump-around/circulation

24
Q

_____ 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

A

b. a deluge/fire spray system

25
Q

True or False
The responsibilities of an operator in ensuring the normal operation of a tank include:
 Filling and emptying tanks
 Gauging and sampling fluid quality
 Monitoring pressure and temperature of fluids
 Operating mixers for mixing additives with the stored fluid
 Operating circulation pumps to ensure fluid consistency
 Draining accumulated water and sediments
 Lining up tanks

A

True

26
Q

The _____ relieves excess pressure in a pressurized tank.

a. Pump-around/circulation
b. Automatic shutoff valve
c. Safety valve
d. Deluge spray system

A

c. Safety valve

27
Q

What is the function of the demister pad in a vessel?

a. Prevents the cavitation of pumps
b. Prevents liquid droplets from exiting the vessel with the vapor
c. Prevents the formation of vortices inside the vessel
d. Prevents water from mixing with the process liquid being withdrawn

A

b. Prevents liquid droplets from exiting the vessel with the vapor

28
Q

A __________ provides additional capacity to minimize the fluctuations in process
fluid flow to downstream equipment.

a. Surge drum
b. Settler
c. Flash drum
d. Contactor

A

a. Surge drum

29
Q

_____ is made of vertical plates that are welded internally over the process liquid outlet. It prevents the formation of vortices and prevent pump cavitation.

a. Water Boot
b. Vapor Outlet
c. Vortex Breaker
d. Demister Pad

A

c. Vortex Breaker

30
Q

______ are devices used to separate emulsion in to their individual components. They help in separating liquid and solid contaminants from a gas or liquid and removing free water from liquid streams.

a. Grounding Straps
b. Coalescer
c. Vortex Breakers
d. Demister Pads

A

b. Coalescer / Coalescing Element

31
Q

____ are used to dissipate potential static charges caused by the friction of flowing fluids in a vessel.

a. Grounding Straps
b. Coalescer
c. Vortex Breakers
d. Demister Pads

A

a. Grounding Straps

32
Q

_____ are vessels that are used to perform a chemical reaction, generally in the presence of a catalyst.

a. Reactors
b. Tanks
c. Reboilers
d. Filters

A

a. Reactors

33
Q

______ are cylindrical vessels that contain some kind of filtering medium for removing fine
particles from a gas or a liquid stream.

a. Reactors
b. Tanks
c. Reboilers
d. Filters

A

d. Filters

34
Q

What is the buoyancy needed to float the roof on the liquid of a tank?

a. Spargers
b. Pontoons
c. PFD
d. Floats

A

b. Pontoons

35
Q

Rain water drains out from the roof of the tank through a __________ that flexes as the roof
rises and falls.

a. drain pipe
b. water draw
c. safety valve
d. deluge spray system

A

b. drain pipe

source: slide 30 Tanks and Vessels GMT

FOTP Chevron (6 decks)

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