Bashundhara Oil & Gas Company Ltd.

(BOGCL)
CRU & DHT Project Technical Appendix 2-1

2 Appendix 2 Design Basis and Technical Solution Data

Appendix 2 Design Basis and Technical Solution Data .............................................. 2-1

2.1 Raw Materials Properties ............................................................................... 2-2
2.2 Product Properties ......................................................................................... 2-4
2.3 Definition of Battery Limits and Overall Plot Plan........................................... 2-7
2.4 Plant Capacity and Flexibility ......................................................................... 2-7
2.5 Specifications and consumption of auxiliary materials, catalysts and chemicals
2-8
2.6 Utilities Requirements .................................................................................... 2-9
2.7 Utility consumption....................................................................................... 2-13
2.8 Battery Limit Conditions ............................................................................... 2-14
2.9 Waste Effluents and Noise ........................................................................... 2-15
2.9.1 Waste Water Streams ............................................................................ 2-15
2.9.2 Gaseous Emissions ............................................................................... 2-15
2.9.3 Solids ..................................................................................................... 2-15
2.9.4 Noise ..................................................................................................... 2-15
2.10 Hazardous area division .............................................................................. 2-15
2.11 Site Meteorological & Geological Conditions ............................................... 2-16

This document must not be disclosed to others in any manner without written permission from HOTO.
 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-2

Content in this Technical Appendix represents the design basis of the Contract Plant and
includes major estimation data of technical solution made in preparation of this Technical
Appendices. All conditions, compositions and availabilities of raw materials, auxiliary
materials, products and utilities will be confirmed during the Kick-Off Meeting.

2.1 Raw Materials Properties

For NHT/CRU & DHT Unit, feedstock are Naphtha and Straight Run Diesel respectively,
which are from existing Atmospheric Distillation Unit (ADU). This chapter lists the main
properties of Crude oil to ADU, and properties of Naphtha and Straight Run Diesel to
NHT/CRU & DHT unit.
Table 2.1-1 Properties of Crude oil (to ADU)

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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-3

Table 2.1-2 Properties of Straight Run Naphtha (to splitter)

SR Naphtha (Operation
Item Unit (Design feed range)
stock)
Density kg/m3@20°C In BED
S ,wppm 600 Max.1200(TBD)

N ,wppm In BED
ASTM D-86 (%vol) ℃
- IBP 57 37-60

- FBP 178 Max. 180

Paraffins wt% 31.89

Olefins wt% 0.70
Naphthenes wt% 20.20 Min.20

Aromatics wt% 8.27 Min.8

Table 2.1-3 Properties of Straight Run Diesel (to DHT)

Straight Straight Gas
Run Run Diesel Gas oil(Op
Diesel (Operation oil(Desi range)
Item Unit
(Design range) gn Feed (Max.
Feed Stock) 10%)
Stock)
Density kg/m3@20°C 848.2 920.2
MW 209
API 34.4
Kinematic
mm2/s@20°C 5.9
Viscosity
Kinematic
mm2/s@40°C 3.7
Viscosity
Condensation
°C -26
temperature
Flash point
°C Min 55
(closed cup)
Sulfur content wt% 2.0 2.0
Nitrogen
wt% 0.04
content
Cetane index 44* 44-49
Cetane
Report
number
mgKOH
Acidity 3.1
/100ml
Aniline point °C 63.3
Distillation
range ASTM °C
D86
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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-4

Straight Straight Gas

Run Run Diesel Gas oil(Op
Diesel (Operation oil(Desi range)
Item Unit
(Design range) gn Feed (Max.
Feed Stock) 10%)
Stock)
IBP 186 170-190
5% 190 175-195
10% 199
30% 214
50% 268
70% 321
90% 347
95% 352 Max. 360**
FBP 395
* If only SR diesel is considered as DHT Feed, Contractor guarantee that the product
cetane index will be Feedstock cetane index+2.
**Contractor shall design the DHT considering blended feed comprising of SR diesel
90% and Gas Oil 10% and in that case only Sulfur and Cetane Index of EURO-V will
be met.
#For blended feedstock (90% SR diesel & 10% Gas oil) T-95 max 366°C. In that case
EURO-V distillation condition will not be met. But DHT will operate smoothly.

2.2 Product Properties

This Contract Plant adopts Straight Run Naphtha and Straight Run Diesel to produce
gasoline, diesel and other products (LPG, and by-product sulfur).

CRU products
a) Hydrogen product: H2≥99.9v% (Purity)
b) Composition of Reformer LPG (predicated)
Item Value
RVP @ 40°C Max.213 psi
Sulfur content Max. 30 ppm
H2S content (ASTM D2420) Nil

Copper strip corrosion @ 1hr 37.8℃ Max 1

C5 Max 2%

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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-5

c) Reformate Product Properties (predicated)

Table 2.2-1 Estimated CRU Reformate Properties
Item Value Test Method
Distillation Range, °C ASTM D86
IBP
10%
50% 80~120 ASTM D86

90% 180 ASTM D86

FBP 210 ASTM D86

ASTM D2699&ASTM
RON ≥98
D2700
Olefin, v% ＜0.5 EN 14517
ASTM D5453 or ASTM
S, wt ppm ＜1
D4045
Aromatics, v% 55±5 ASTM UOP 744

# Without additional investment and unit like isomerization, Aromatic V% in Final

Gasoline Pool might not be met 35%.

d)DSN (De-sulphurized Naphtha) from NHT will be a product and will be send to
storage tank.
Item Requirements Test Method
Total Sulfur wt ppm ≤0.5 ASTM D5453
Total Nitrogen wt ppm ≤0.5 ASTM D4629
Fluoride wt ppm ≤0.5 UOP 991
Chloride wt ppm ≤0.5 UOP 991
Bromine index mgBr/100g ≤10 ASTM D2710
UOP 304
Total oxygen wt ppm ≤2 UOP 481
Includes: water UOP 624
peroxide
carbonyl
Copper wt ppb ≤4 UOP 962
Arsenic wt ppb ≤1 UOP 946
Plumbum wt ppb ≤10 UOP 952
Mercury wt ppb ≤2 UOP 938
Silicon wt ppm ≤0.1 UOP 796
Phosphorus wt ppb ≤200 ASTM D3231
UOP 389
Other metals wt ppb ≤100 UOP 391
UOP 389

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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-6

DHT Unit product

Table 2.2-2 Estimated Diesel Product Properties
DHT Diesel
Description DHT Diesel DHT Naphtha
Test Method
Density (20°C) g·cm-3 0.838~0.848 ASTM D1298 0.720
ASTM
Sulfured content, wppm <10 <5
D1552/D1266
Nitrogen content, wppm <10 ASTM D4629 <2
Cetane Index 48 * ASTM D976
Distillation range/°C, ASTM D86
IBP 168
10% 182 68
30% 223 85
50% 252 103
70% 295 120
90% 331 137
95% 345 142

EP 362 165

Acidity, Total ,mg KOH/gm Max 0.20 ASTM D664

Flash Point, PMCC, ℃ Min 55 ASTM D93
Color, ASTM Max. 3.0
Oxidation Stability Max 25gm/m3, Min ASTM D1159
20gm/m3
Polycyclic Aromatic HC.(PAH), wt% Max 2 EN 12916
Total Contamination, mg/kg Max 10 EN 12662
Fatty Acid Methyl Estar (FAME) Max 5 EN 14078
Content, Vol%
Lubricity corrected wear scar 400
diameter (WSD 1.4) @ 60℃,
microns

*If only SR diesel is considered as DHT Feed, Contractor guarantee that the
product Cetane index will be Feedstock cetane index+2.
SRU product
Table 2.2-3 Estimated Sulfur Properties
Item Description Value Test Method
1 Purity (dry basis), wt% ≥99.95 GB 2449
2 Fe content, wt% ≤0.003 GB 2449

3 Ash content, wt% ≤0.03 GB 2449

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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-7

Item Description Value Test Method

4 Organics (in Carbon) Content, wt% ≤0.03 GB 2449

5 Acidity (in H2SO4) Content, wt% ≤0.003 GB 2449

6 Arsenic Content, wt% ≤0.0001 GB 2449

7 Water Content, wt% ≤1.5 GB 2449

8 Mechanical impurities, wt% None GB 2449

9 Color Bright Yellow GB 2449

#Sulfur storage type- rain & water proof
#Sulfur Bag making machine- Contractor’s scope.
# For all products test methods will be ASTM, for sulfur product test method will be GB
standard.

# Flue gas: SO2 (3v%O2 basis) ≤250mg/Nm3.

2.3 Definition of Battery Limits and Overall Plot Plan

Battery Limits is defined as the red line of the construction land for the Contract Plant units,
and all the inter related pipelines & pipe racks, unit feed & booster pumps and field
equipment, instruments & control from Contract Plant Units to Feedstock & Product Storage
tanks, new ETP, new Flare and new LPG bullet tanks etc.
A preliminary plot plan for the Contract Plant is shown in Attachment 2-1

2.4 Plant Capacity and Flexibility

NHT/CCR
Capacity: annual treating of 250,000 tons of heavy naphtha
Annual operation hour: 8000 hours
Operation load flexibility: 60%-110%
DHT
Capacity: annual treating of 500,000 tons of diesel and light gasoil.
Annual operation hour: 8000 hours.
Operation load flexibility: 60%-110%.
HPU
Capacity: production of 1,000 Nm3/h hydrogen.
Annual operation hour: 8000 hours.
Operation load flexibility: 60%-110%.
SWS
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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-8

Capacity: 30t/h
Annual operation hour: 8000 hours
Operation load flexibility: 60%-110%
ARU
Capacity: Rich amine 50t/h
Annual operation hour: 8000 hours
Operation load flexibility: 60%-110%
SRU/TGTU
Capacity: Annual production of 10,000 tons sulfur
Annual operation hour: 8000 hours
Operation load flexibility: 30%-110%
#SRU, ARU & SWS unit capacity will be determined considering Max 2% sulfur in DHT feed,
max 1200 ppm sulfur in Naphtha Stabilizer feed and considering naphtha stabilizer off gas
from Unit-2.
# Battery Limit Condition: Contractor shall design the specified battery limit conditions for
products (after BED) of each unit for safe storage condition & minimizing breathing loss etc.

2.5 Specifications and consumption of auxiliary materials, catalysts and

chemicals
NHT/CCR
Annual First Lifetime,
NO. Description Remarks
Consumption Loading Year
One
1 Hydrotreating Catalyst 6.8t 6 regeneration
after 1st 3 yr.
One
2 Guard bed reactor catalyst 9.7t 6 regeneration
after 1st 3 yr.
Regeneration
once a year,
3 Reformate Catalyst 29.2t 6
total 5
regeneration.

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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-9

DHT
Annual First Lifetime,
NO. Description Remarks
Consumption Loading Year
One
1 Hydrotreating Catalyst 62m3 6 regeneration
after 1st 3 yr.

SRU/TGTU
Annual First Lifetime,
NO. Description Remarks
Consumption Loading Year
No
1 Claus Catalyst 10.6m3 3
regeneration.
No
2 Hydrotreating Catalyst 5.9m3 3
regeneration.

# Performance curve for all the catalyst will be shared by the catalyst vendor during
DED.

2.6 Utilities Requirements

This chapter provides utilities indicators for reference. All conditions will be reconfirmed
at Basic Engineering Design (BED).
Circulating cooling water
Circulating cooling water Standard Remarks
Supply temp. 30℃ Max 32℃
Return temp. 40℃ Max 42℃
Design Δ temp. 10℃
Supply pressure (B.L.) 0.45MPaG
Back pressure (B.L.) 0.25MPaG
Fouling factor 0.00034（m2·K）/W

Production water
Production water Standard
Supply temp. 25
supply pressure (B.L.) 0.40MPaG
Water standard
pH 6.5~8.5
2+
Ca <175 mg/l
2+
Fe <0.3 mg/l

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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-10

Living water
Living water Standard
Supply temp 25
supply pressure (B.L.) 0.40MPaG

Fire water
Fire water Standard
Supply temp. 25
supply pressure (B.L.) 0.80~1.1MPaG
Water standard
pH 6.5~8.5
2+
Ca <175 mg/l
Fe2+ <0.3 mg/l

Fire foam liquid

Fire foam liquid Standard
Temp. 25
pressure (B.L.) 0.80~1.1MPaG

Steam
Standard Fouling factor
Pressure MPaG Temp.℃
Grade (m2·K)/W
LP steam 1.0 250 0.00015

Steam condensate
The condensate is divided into turbine condensate and process steam condensate.
Turbine Condensate
Turbine Condensate Standard
Output temp. ≤60℃
Output pressure 1.2MPaG
quality Satisfy GB 12145
Process steam condensate
Process steam condensate Standard
Output temp. ≤100℃
Output pressure 0.5MPaG
Quality
Iron content ≤100mg/l
Oil content ≤5mg/l
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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-11

The process steam condensate is flashed and recovered inside the device, and the temperature of
the process steam condensate discharged from each process device to the outside of the boundary
is ≤100℃

BFW
The water quality of BFW meets GB/T 12145, and the water quality is shown in the table
below.
Item HP boiler feed water MP LP boiler feed water
pH at（25℃） 8.8~9.3 8.8~9.2
Conductivity（25℃） ≤0.3 µs/cm ≤0.3 µs/cm
hardness ≤2 µ mol/L ≤2 µ mol/L
SiO2 content ≤20 µg/L ≤20 µg/L
Iron content ≤30 µg/L ≤50 µg/L
Copper content ≤5 µg/L ≤10 µg/L
Dissolved oxygen ≤7 µg/L ≤15 µg/L
Oil ≤0.3 mg/L ≤1 mg/L

Desalted water
Desalted water Standard
Temp. Amb
pressure (B.L.) 1.2 MPaG
pH at （25℃） >7
Conductivity（25℃） ≤0.2 µs/cm
SiO2 content ≤20 µg/L
Iron content ≤20 µg/L
Copper content ≤5 µg/L
Sodium content ≤10 µg/L
Fouling factor 0.00025(m2·K)/W

Instrumental air
Instrumental air Standard
Pressure (B.L.) 0.6 MPaG
Temp. 40
Dew point (pressure state) -40 ℃
Oil ≤10 mg/m3
dust ≤1 mg/m3
particle ≤3 µm
Quality: oil-free, dust-free, dry and clean compressed air

Plant air
Plant air Standard
Pressure (B.L.) 0.7 MPaG
Temp. 40

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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-12

Nitrogen
LP nitrogen Standard
Pressure (B.L.) 0.45 MPaG
Temp. 40
Oxygen content ≤10ppm(mol.)

Electricity
Highest System Voltage 36kV
Substation voltage 36kV Maxm.
High voltage motor voltage 10kV
Low voltage motor voltage 380V
Lighting system voltage 380/220V
Overhaul the power supply voltage 380/220V
DCS voltage 220V
According to the installation load, the power distribution voltage levels of the production installations
are as follows:
200kW and above motor
10kV

Motors below 200kW 380V

frequency 50Hz±0.2Hz

Fuel gas
Fuel gas source: use external natural gas when driving, and use hydrogen to recover tail
gas during normal production.
Natural gas
Natural gas Standard
Pressure (B.L.) Tentative
Temp. 25
composition Tentative

Fuel gas
Fuel gas Standard
Pressure (B.L.) 0.45MPaG
Temp. 40
composition Tentative

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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-13

2.7 Utility consumption

This chapter provides a reference for the utility consumption of each unit, but does not serve
as a guarantee value.
NHT/CRU
Table 2.7-1 Utilities consumption of NHT/CCR
NO. Description Unit Value Remark
1. Process water t/h 0.4/30
2. Potable water t/h /3 Intermittent
3. Cooling Water t/h 793.6 Circulating consumption
4. Demineralized Water t/h 1.0 Continuous
5. Power kW 2618
6. Steam（1.0MPaG,250℃） t/h 0.4
7. Nitrogen Nm3/h 80.8
8. Instrument Air Nm3/h 294.7 Continuous
9. Plant Air Nm3/h /1010 Intermittent
10. Fuel Gas kg/h 2800 Continuous

DHT
Table 2.7-2 Utilities consumption of DHT
NO. Description Unit Value Remark
1. Process water t/h 0.4/30 Continuous/Intermittent
2. Potable water t/h /3 Intermittent
3. Cooling Water t/h 147.6 Circulating consumption
4. Power kW 1191
5. Nitrogen Nm3/h /150 Intermittent
6. Instrument Air Nm3/h 156.8 Continuous
7. Plant Air Nm3/h /520 Intermittent
8. Fuel Gas kg/h 499 Continuous

HPU
Table 2.7-3 Utilities consumption of HPU
NO. Description Unit Value Remark
1. Cooling Water t/h 17.1 Circulating consumption
2. Demineralized Water t/h 2.2 Continuous
3. Power kW 105
4. Steam（3.5MPaG,420℃） t/h -1.2
5. Steam（1.0MPaG,250℃） t/h 0.1
6. Nitrogen Nm3/h 12
7. Instrument Air Nm3/h 300 Continuous
8. Fuel Gas kg/h 87 Continuous

SWS
Table 2.7-4 Utilities consumption of SWS
NO. Description Unit Value Remark
1. Process water t/h 0.3/30 Continuous/Intermittent
2. Cooling Water t/h 178.5 Circulating consumption
3. Power kW 132.2
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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-14

NO. Description Unit Value Remark

4. Steam（1.0MPaG,250℃） t/h 8.6
5. Nitrogen Nm3/h /120 Intermittent
6. Instrument Air Nm3/h 60 Continuous
7. Plant Air Nm3/h /120 Intermittent

ARU
Table 2.7-5 Utilities consumption of ARU
NO. Description Unit Value Remark
1. Process water t/h 0.3/30 Continuous/Intermittent
2. Cooling Water t/h 214 Circulating consumption
3. Power kW 200
4. Steam（1.0MPaG,250℃） t/h 10.8
5. Nitrogen Nm3/h /120 Intermittent
6. Instrument Air Nm3/h 60 Continuous
7. Plant Air Nm3/h /120 Intermittent

SRU/TGTU
Table 2.7-6 Utilities consumption of SRU/TGTU
NO. Description Unit Value Remark
1. Process water t/h 2/30 Continuous/Intermittent
2. Cooling Water t/h 67.3 Circulating consumption
3. Deoxygenated Water t/h 6.8 Continuous
4. Power kW 458.6
5. Steam（1.0MPaG,250℃） t/h -5.6 Generated by HMB
6. Nitrogen Nm3/h 60 Intermittent
7. Instrument Air Nm3/h 240 Continuous
8. Plant Air Nm3/h 240 Intermittent
9. Fuel Gas kg/h 206 Continuous

2.8 Battery Limit Conditions

Table 2.8-1 Battery Limit Conditions
Availability of ISBL conditions ISBL
Stream Source Pressure , MPag Temperature,℃
Min/Norm/Max Min/Norm/Max
Process Streams
Straight Run Naphtha from OSBL provide by owner provide by owner
Straight Run Diesel from OSBL provide by owner provide by owner
Utility
Potable Water From ISBL /0.4/ /25/
Service Water From ISBL /0.4/ /25/
Fire Water From ISBL /1.2/ /25/
Demineralized Water From ISBL /0.5/ /25/
Boiler Feed Water From ISBL /6.0/ /104/
Cooling Water From ISBL /0.45 /30/32

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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-15

Cooling Water To ISBL /0.25/ /40/42

LP Steam From ISBL /1.0/ /250/
Compressed Air From ISBL 0.6/0.7/0.8 /40/
Instrument Air From ISBL 0.55/0.6/0.75 /40/
Nitrogen From ISBL 0.6/0.7/0.8 /40/
Natural gas From OSBL 0.35/0.4/0.5 /25/

2.9 Waste Effluents and Noise

2.9.1 Waste Water Streams
The waste water discharged from each unit of the project mainly includes petroleum, sulfide,
volatile phenol, COD, ammonia nitrogen and so on.

2.9.2 Gaseous Emissions

The main exhaust gas emission materials produced by the projects are SO2, Nox and
particulate matter.
Meet the local environmental standard.

2.9.3 Solids
The solid waste produced by each unit of this project mainly includes waste catalyst, waste
porcelain ball, waste adsorbent and so on.

2.9.4 Noise
The noise sources of the equipment in this project are mainly pumps, compressors, heating
furnaces and air coolers, etc.. The continuous equivalent sound level is 70-75 dB by
complying Bangladesh Noise Pollution Control 2006.

2.10 Hazardous area division

The main explosive dangerous media in the unit device area are methane, hydrogen, ,
reaction mixture gas, gasoline, diesel, etc. According to the relevant "explosion hazardous
area division conditions" provided by the technology major and in compliance with the
Chinese standard "Code for Design of Electric Power Installations in Explosive and Fire
Hazardous Environments" (GB 50058), the device is divided into gas explosion hazard zone
2 (partial trench and pit division) It is a gas explosion danger zone 1), the hazardous gas
mixture level is IIB, the temperature group is T3, and the local is IIC, and the temperature
group is T3. For details, see the attached "Explosion Hazardous Area Division Map". Use
explosion-proof (Ex-d) or increased-safety (Ex-e) products for explosion-proof electrical
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 Bashundhara Oil & Gas Company Ltd. (BOGCL)
CRU & DHT Project Technical Appendix 2-16

equipment. In explosion-hazardous areas containing hydrogen, the level and temperature

group of electrical equipment should not be lower than IICT3; other explosion-hazardous
areas Inside, the level and temperature group of electrical equipment should not be lower
than IIBT3.
All places in the device boundary area should be demarcated for their environmental
categories, and explosion-hazardous places should indicate the hazard level and
temperature group of the explosive dangerous media contained in it, so as to correctly select
electrical equipment and meet its electrical design and installation requirements. The
characteristics of explosive hazardous environment can be divided into the following
categories::
Explosive gas environment hazard: Zone 0, Zone 1, and Zone 2；
Explosive dust environment hazard: Zone 10, Zone 11；
Fire hazard: The raw materials and products used in the production process, such as
ethylene, propylene, hydrogen, methane, and various hydrocarbons, are all Class A
dangerous goods.
Fire hazard environment: Zone 21, Zone 22, Zone 23.

2.11 Site Meteorological & Geological Conditions

This section is to contain the climatic and geological conditions for the site at which the
Contract Plant will be built. All conditions will be reconfirmed at the Kick-off Meeting.

This document must not be disclosed to others in any manner without written permission from HOTO.