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Diesel Storage Flashcards

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1
Q

What is the primary purpose of the Diesel Storage System?

A

To store blended diesel products and transfer finished products to the East Saint John loading arms for shipment.

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2
Q

What are the main inputs of the Diesel Storage System?

A
  • Hydrocracker diesel
  • Hydrodesulphurised (HDS) diesel
  • High-sulphur diesel (HSD)
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3
Q

What outputs does the Diesel Storage System produce?

A
  • Ultra-low sulphur diesel (ULSD)
  • High-sulphur diesel (HSD)
  • HDS Cold Feed
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4
Q

What utilities are essential for the operation of the Diesel Storage System?

A
  • Electricity
  • Essential instrument air
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5
Q

What are the two functional subsystems within the Diesel Storage System?

A
  • Low-sulphur Diesel Storage Subsystem
  • High-sulphur Diesel Storage Subsystem
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6
Q

Describe the function of the Low-sulphur Diesel Storage Subsystem.

A

It combines HCU diesel and HDS diesel and sends the combined stream to the ULSD storage tanks.

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7
Q

What is the role of the High-sulphur Diesel Storage Subsystem?

A

It routes HSD product to component tanks, blends them, and transfers to HSD finished product tanks.

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8
Q

True or False: Participation in any KBC workshop entitles participants to train others using KBC materials.

A

False

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9
Q

Fill in the blank: The Diesel Storage System handles _______ and _______ diesel moving through and leaving the refinery.

A

ultra-low sulphur, high-sulphur

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10
Q

What happens if there is an upset in the Diesel Storage System?

A

It can force the shutdown of units upstream and prevent loading of ships downstream.

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11
Q

What is the significance of the Oil Movements tank fields?

A

They provide a continuous supply of feedstocks, handle and store products, and transfer final products.

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12
Q

What is the purpose of the end-of-module knowledge test?

A

To assess knowledge of system streams, utilities, equipment, and operation.

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13
Q

What does the HDS Cold Feed consist of?

A

Light and Medium diesel from #3 & #4 Crude Distillation Unit.

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14
Q

What is the function of the ULSD blend filters?

A

To ensure proper blending and filtration of ultra-low sulphur diesel.

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15
Q

What is the role of the ULSD Shipping Tank?

A

To store and facilitate the shipping of ultra-low sulphur diesel.

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16
Q

What type of equipment is essential for monitoring and operating the Diesel Storage System?

A
  • Tanks
  • Pumps
  • Compressors
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17
Q

What does the term ‘uptime’ refer to in the context of the Diesel Storage System?

A

The operational efficiency and availability of the system.

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18
Q

What is the significance of having a positive attitude while operating the Diesel Storage System?

A

It is crucial for troubleshooting difficulties and ensuring safe operations.

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19
Q

What is the main function of the Hydrodesulphurisation (HDS) Unit?

A

To reduce the sulphur content of diesel.

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20
Q

What does the acronym KBC stand for in the context of this training?

A

KBC Advanced Technologies plc

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21
Q

In which year was the Diesel Storage System training module developed?

A

2012

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22
Q

What is the purpose of the revision log in the training document?

A

To track changes and updates to the document over time.

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23
Q

What is the primary responsibility of a Facility Technician?

A

Monitor and operate equipment, perform routine preventive maintenance.

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24
Q

What is the purpose of recognizing process hazards?

A

To reduce incidents.

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25
What is the function of the HDS ULSD Storage/Component Tank (T-200)?
Acts as a surge tank and storage tank for diesel product.
26
What happens when the demand downstream is equal to the rundown rate from the HDS Unit?
The tank is bypassed.
27
What is the diameter and height of the HDS ULSD Storage/Component Tank?
Approximately 150 feet in diameter and 56 feet high.
28
What is the internal component of the HDS ULSD Storage/Component Tank?
Electric motor-driven Agitator (K-52200).
29
What is the function of the HCU ULSD Storage/Component Tank (T-201)?
Acts as both a surge tank and a storage tank for diesel product.
30
What is the approximate storage capacity of the HCU ULSD Storage/Component Tank?
Contains approximately 3146 barrels per vertical foot.
31
What do the Low-sulphur Diesel Storage ULSD/HSD Tanks (T-198/199) provide?
Additional storage capacity for ULSD product and serve as swing tanks for HSD product.
32
What is the function of the ULSD Shipping Tanks (T-208, T-209, T-210, T-213)?
Store a blended composition of HCU and HDS rundown streams.
33
What is the flow rate of the ULSD Pump – Shipping (P-5225)?
Approximately 17,000 bph.
34
What is the nominal capacity of the ULSD Recirculation Pumps – HCU (P-5281A/B)?
160 gpm each.
35
What do the ULSD Blend Filters – HDS (V-5201A/B) do?
Remove particulates from the ULSD HDS product.
36
What is the purpose of the HSD Pumps – Product Loading (P-5255/5256)?
Provide HSD to Product Loading when loading railcars or truck trailers.
37
What is the function of the HSD Component/Jet Off-spec Tank (T-211)?
Receives and stores a combination of CDU light and medium diesel sidecut streams, and off-spec jet product.
38
What is the capacity of the HSD Tanks (T-196/197)?
Approximately 3146 barrels per vertical foot.
39
What must be done before converting HSD Tanks (Swing Tanks) to ULSD service?
The tank must be emptied and cleaned thoroughly.
40
What is the dedicated pump for HSD shipping to ESJ?
HSD Pump – Shipping (P-5226).
41
True or False: All equipment in the Low-sulphur Diesel Storage Subsystem is constructed of carbon steel.
True.
42
Fill in the blank: The HDS ULSD Storage/Component Tank is approximately _______ feet in diameter.
150
43
What is the main goal of familiarization with the equipment?
To recognize potential hazards and reduce incidents.
44
What will be covered in Lesson 3?
How each subsystem works and a simplified flow diagram.
45
What is the primary responsibility of a Facility Technician in the Diesel Storage System?
To know how each subsystem works to understand the Diesel Storage System as a whole.
46
How many subsystems are in the Diesel Storage System?
Two subsystems.
47
What does the Low-sulphur Diesel Storage Subsystem store?
Ultra-low sulphur diesel (ULSD) fuel components and blended ULSD fuel.
48
What is the maximum sulphur content allowed in ULSD?
15 ppm.
49
What role do the storage tanks in the Low-sulphur Diesel Storage Subsystem serve?
They store ULSD and can act as surge tanks if flow is disrupted.
50
What equipment is used to assist in blending the components in the Low-sulphur Diesel Storage Subsystem?
Agitators (K-52200/52201).
51
What is the purpose of ULSD Shipping Pump (P-5225)?
To deliver approximately 14,000 bph to the ESJ loading arms or to the Product Loading area.
52
What happens if the ULSD Shipping Pump is inoperative?
Product can be delivered by gravity flow to ESJ at a reduced rate.
53
What does the High-sulphur Diesel Storage Subsystem store?
High-sulphur diesel (HSD).
54
What is the maximum sulphur content allowed in HSD?
500 ppm.
55
How does HSD flow into the High-sulphur Diesel Storage Subsystem?
As sidecuts from the #3 and #4 CDUs, by way of the Merox Treaters.
56
What equipment is used to supply HSD to Product Loading?
HSD Pumps – Product Loading (P-5255/5256).
57
What is the primary purpose of process instrumentation in the system?
To control the operating system.
58
What types of process variables need to be maintained for efficient system operation?
* Pressure * Temperature * Flow * Level * Composition
59
What is the fail position of control valve PV-253?
Closed.
60
How is control valve FV-128 controlled?
From the control room by controller FC-128.
61
What is the purpose of control valve FV-127?
To control the flow of HDS diesel from the HDS component rundown line to ULSD Shipping Tanks T-208 and T-209.
62
What is the fail position of control valve FV-112?
Closed.
63
What is the purpose of control valve PV-255?
To control the pressure of the HCU component flowing from the HCU ULSD Storage/Component Tank (T-201) to Blending.
64
Are there any controls for the High-sulphur Diesel Storage Subsystem?
No.
65
What is blending in the context of petroleum processing?
The mixing of two or more petroleum fractions to produce a product meeting specifications for market.
66
What does the acronym bph stand for?
Barrels per hour.
67
What is the function of the control valves in the system?
To efficiently and safely operate the system.
68
What is the primary focus of Lesson 4 in the module?
Controlling the system.
69
What is alkylation?
A refining process for converting light, gaseous olefins into high-octane components.
70
What does ASU stand for?
Aromatic Saturation Unit.
71
Define blending in the context of petroleum.
The mixing of two or more petroleum fractions to produce a product meeting specifications for market.
72
What does bph stand for?
Barrels per hour.
73
What is the function of a CDU?
Crude Distillation Unit.
74
Describe the cracking process.
A high-heat thermal process that randomly breaks large hydrocarbon molecules into smaller hydrocarbon molecules.
75
What is DHCG?
Desulphurised heavy cat gasoline used in gasoline blending.
76
What does ESJ refer to?
East Saint John.
77
What does FRP stand for?
Fibreglass-reinforced thermosetting plastic.
78
What does gpm measure?
Gallons per minute.
79
Define HCU.
Hydrocracking Unit that exposes heavy fuel oil to hydrogen at high pressure and temperature.
80
What is HDS?
Hydrodesulphurisation, a process to reduce sulphur in hydrocarbons.
81
What does hp stand for?
Horsepower.
82
What is HSD?
High-sulphur diesel, with sulphur content not exceeding 500 ppm.
83
What does HSR represent?
Heavy straight run.
84
What is hydrodesulphurisation?
A catalytic process reacting sulphur-bearing feedstock with hydrogen to produce hydrogen sulphide and sulphur-free hydrocarbons.
85
What does mbph stand for?
Thousand barrels per hour.
86
What is Merox treatment?
A process that uses caustic soda to extract mercaptans from petroleum products.
87
What does NHT stand for?
Naphtha hydrotreater.
88
What is ppm an abbreviation for?
Parts per million.
89
What does RFCCU stand for?
Residue Fluid Catalytic Cracking Unit.
90
What does rpm measure?
Revolutions per minute.
91
What is ULSD?
Ultra-low sulphur diesel, with sulphur content not exceeding 15 ppm.
92
What does VBU stand for?
Visbreaker Unit.
93
What is VGO?
Vacuum gas oil.
94
Fill in the blank: Hydrocracking diesel is produced in the _______.
HCU.
95
True or False: Hydrodesulphurised diesel is a product of HDS.
True.
96
Fill in the blank: The process of hydrodesulphurisation produces _______ gas.
hydrogen sulphide (H2S).
97
What is the role of electricity in the subsystems?
Used as a utility.
98
Identify the equipment number for ULSD Shipping Tanks.
T-208, T-209, T-210 and T-213.
99
What is the purpose of the ULSD Pump – Shipping?
P-5225.
100
True or False: The High-sulphur Diesel Storage Subsystem has control valves.
False.
101
Name one utility used in the diesel storage subsystems.
Essential instrument air.

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