Black Oil Storage

Question 1

What is the main purpose of the Black Oil Storage System?

Answer 1

To provide tank storage for product rundowns from the #3 and #4 Crude Distillation Units (CDUs) and facilitate blending of asphalt and bunker fuel products.

This system is also responsible for transferring finished products to shipping and marketing areas.

Question 2

What are the primary inputs of the Black Oil Storage System?

Answer 2

• Asphalt
• Vacuum resid
• Vacuum gas oil (VGO)

These inputs are produced in the vacuum columns of the #3 and #4 CDUs.

Question 3

What outputs does the Black Oil Storage System produce?

Answer 3

• Asphalt
• Bunker fuel
• Visbreaker (VB) cold feed
• RFCCU cold feed

These outputs are used by other processes within the plant or sold to customers.

Question 4

What utilities are used by the Black Oil Storage System?

Answer 4

• Medium-pressure (MP) steam
• High-pressure (HP) steam
• Electricity
• Essential instrument air

These utilities are crucial for the operation and efficiency of the system.

Question 5

What is a by-product generated by the Black Oil Storage System?

Answer 5

Condensate

This condensate is sent to the steam condensate header.

Question 6

What are the four interrelated functional subsystems in the Black Oil Storage System?

Answer 6

• Intermediate Feed Storage Subsystem
• Vacuum Gas Oil Storage Subsystem
• Asphalt Storage Subsystem
• Bunker Storage Subsystem

Each subsystem performs specific functions related to the overall operation of the process.

Question 7

Fill in the blank: The Black Oil Storage System transfers finished products to _______.

Answer 7

[shipping and marketing areas]

Question 8

True or False: The Black Oil Storage System operates without any utilities.

Answer 8

False

The system relies on several utilities to function effectively.

Question 9

What is the purpose of the Intermediate Feed Storage Subsystem?

Answer 9

To receive vacuum gas oil (VGO) from the #3 and #4 CDUs and supply cold feed to the RFCCU.

It also stores vacuum resid from #3 and #4 CDUs.

Question 10

What does the Asphalt Storage Subsystem do?

Answer 10

Stores vacuum tower bottoms from the #3 CDU during a sour run and blends asphalt with desired additives.

It can send asphalt to either Asphalt Shipping at ESJ or to tank truck loading racks.

Question 11

What is the function of the Bunker Storage Subsystem?

Answer 11

Stores feedstock, intermediate, and final bunker fuel products before, during, and after blending.

This product is then transferred to the shipping terminal at ESJ.

Question 12

What type of steam is used to heat the contents of certain storage tanks in the Black Oil Storage System?

Answer 12

• Medium-pressure (MP) steam
• High-pressure (HP) steam

MP steam is 150-psig, while HP steam is 600-psig.

Question 13

What role does electricity play in the Black Oil Storage System?

Answer 13

Used to energize electrically driven equipment and instrumentation.

It is supplied from the refinery electrical grid.

Question 14

What is the primary responsibility of a Facility Technician?

Answer 14

Monitor and operate equipment, perform routine preventive maintenance

Question 15

What does recognizing process hazards enable you to do?

Answer 15

Reduce incidents

Question 16

What is the function of the Visbreaker Cold Feed Tank (T-180)?

Answer 16

Receives vacuum resid from #3 and #4 CDUs, used as cold feed for the Visbreaker

Question 17

What are the internal components of the Visbreaker Cold Feed Tank (T-180)?

Answer 17

• Two internal mixers
• 150-psig steam coil

Question 18

What is the function of the RFCCU Cold Feed Tank (T-181)?

Answer 18

Receives gas oils from #3 and #4 CDUs, used as cold feed for the RFCCU

Question 19

What are the internal components of the RFCCU Cold Feed Tank (T-181)?

Answer 19

• Internal mixer
• 150-psig steam coil

Question 20

What is the function of the VGO Storage Tank (T-185)?

Answer 20

Stores VGO from #3 and #4 CDUs, supplies to Bunker Blending and product shipping

Question 21

What are the internal components of the VGO Storage Tank (T-185)?

Answer 21

• Internal mixer
• 150-psig steam coil

Question 22

What is the function of the Asphalt Storage Tank (T-179)?

Answer 22

Stores asphalt from the #3 CDU during sour crude operation

Question 23

What are the internal components of the Asphalt Storage Tank (T-179)?

Answer 23

• Internal mixer
• 600-psig steam coil

Question 24

What is the function of the Asphalt Storage Tank (T-182)?

Answer 24

Stores asphalt from the #3 CDU during sour crude operation

Question 25

What are the internal components of the Asphalt Storage Tank (T-182)?

Answer 25

* Two internal mixers * 600-psig steam coil

Question 26

What is the function of the Asphalt Storage Tank (T-184)?

Answer 26

Stores asphalt from the #3 CDU during sour crude operation

Question 27

What are the internal components of the Asphalt Storage Tank (T-184)?

Answer 27

* Internal mixer * 600-psig steam coil

Question 28

What is the function of the Bunker Storage Tank (T-183)?

Answer 28

Normally stores mixed resid from #3 and #4 CDUs, considered a swing tank

Question 29

What are the internal components of the Bunker Storage Tank (T-183)?

Answer 29

* Internal mixers * 150-psig steam coil

Question 30

What is the function of the Bunker Storage Tank (T-186)?

Answer 30

Used to blend components to make bunker fuel for sale

Question 31

What are the internal components of the Bunker Storage Tank (T-186)?

Answer 31

* Internal mixer * 150-psig steam coil

Question 32

What is the function of the Bunker Storage Tank (T-187)?

Answer 32

Used to blend components to make bunker fuel for sale

Question 33

What are the internal components of the Bunker Storage Tank (T-187)?

Answer 33

* Internal mixer * 150-psig steam coil

Question 34

What is the function of the Bunker Storage Tank (T-190)?

Answer 34

Used to store bunker fuel for sale

Question 35

What are the internal components of the Bunker Storage Tank (T-190)?

Answer 35

* Internal mixer * 150-psig steam coil

Question 36

What is the function of the Bunker Storage Tank (T-191)?

Answer 36

Used to store bunker fuel for sale

Question 37

What are the internal components of the Bunker Storage Tank (T-191)?

Answer 37

* Internal mixer * 150-psig steam coil

Question 38

What is the function of the Bunker Storage Tank (T-212)?

Answer 38

Used to store bunker fuel for sale

Question 39

What are the internal components of the Bunker Storage Tank (T-212)?

Answer 39

* Two internal mixers * 150-psig steam coil

Question 40

What does the Intermediate Feed Storage Subsystem do?

Answer 40

Stores and transfers vacuum resid from #3 and #4 CDUs

Question 41

What is the significance of internal mixers in tanks?

Answer 41

Keeps the product mixed and prevents viscosity issues

Question 42

What is the steam pressure used in the tanks' steam coils?

Answer 42

150-psig

Question 43

True or False: The Asphalt Storage Tanks can only store asphalt from the #3 CDU.

Answer 43

False

Question 44

What is the purpose of the T-185 tank?

Answer 44

Sent to the 1% Shipping Line to ESJ

Question 45

What features does the T-185 tank have to prevent product viscosity?

Answer 45

Equipped with internal mixers and 150-psig steam coils

Question 46

What does the Asphalt Storage Subsystem receive?

Answer 46

Asphalt/vacuum resid from the #3 CDU

Question 47

What are the storage tanks used for in the Asphalt Storage Subsystem?

Answer 47

Store asphalt from the #3 CDU during sour crude operation

Question 48

Which tanks are tied to the Asphalt Marketing Pumps?

Answer 48

T-179, T-182, and T-184

Question 49

How many internal mixers does T-182 have?

Answer 49

Two internal mixers

Question 50

What is the purpose of the Bunker Storage Subsystem?

Answer 50

Stores and blends final bunker fuel products

Question 51

Which tanks are on the 1% shipping line to ESJ?

Answer 51

T-186 and T-212

Question 52

What are the characteristics of the tanks in the Bunker Storage Subsystem?

Answer 52

Equipped with 150-psig steam coils and one internal mixer each

Question 53

What is the primary purpose of process instrumentation?

Answer 53

To control the operating system

Question 54

What pressure conditions can the control valves maintain?

Answer 54

Pressure, temperature, flow, level, and composition

Question 55

What is the control valve FV-300 used for?

Answer 55

To control the flow of resid from T-181 to the RFCCU

Question 56

How is the FV-300 valve controlled?

Answer 56

From the console via FC-300

Question 57

What is the purpose of the manual valve HV-315?

Answer 57

To control the flow of bunker through the 2.75% shipping line to ESJ

Question 58

How is the HV-315 valve controlled?

Answer 58

Manually in the field

Question 59

True or False: There are control elements for the Vacuum Gas Oil Storage Subsystem.

Answer 59

False

Question 60

What is a CDU?

Answer 60

Crude Distillation Unit

Question 61

What does ESJ stand for?

Answer 61

East Saint John

Question 62

Define 'resid'.

Answer 62

The heavy oil fractions left after lighter products have been removed by distillation

Question 63

What does VGO stand for?

Answer 63

Vacuum gas oil

Question 64

Fill in the blank: A fluid’s internal resistance to shear or flow is called _______.

Answer 64

viscosity

Question 65

What does the term 'rundown' refer to?

Answer 65

A process stream or final product that is sent to storage or another unit

Question 66

What is the significance of maintaining process control conditions?

Answer 66

Indicates whether the system is operating in a stable and safe manner

Question 67

List the utilities used in the system.

Answer 67

* Medium-pressure (MP) steam * High-pressure (HP) steam * Electricity * Essential instrument air

Question 68

List the outputs of the system.

Answer 68

* Asphalt * Bunker fuel * RFCCU cold feed * Visbreaker cold feed

Question 69

What is the role of the Facility Technician in process control?

Answer 69

To have a general understanding of the process control operation as it relates to job responsibilities