OMAN RAILWAY PROJECT

Muscat, September 15, 2013

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Technical Brief

Project Critical Issues

Signaling Systems

Opportunities for Plants and Equipment

Index

Technical Brief

Total Length of 2244 km, divided into 9 Segments linking Omani borders with UAE

to Muscat, as part of GCC Railway

Network, and to the southern parts of the

country at Port of Ad Duqm, Port of

Salalah and to Yemen border;

Double Track non-electrified railway line with Continuous Welded Rail (CWR);

Mixed Freight and Passenger traffic;

Maximum speed of 120 km/h for freight trains and 220 km/h for passenger trains

(corridor design up to 350 km/h);

Maximum permissible axle load: 32,4 tons;

Design Standards: Arema/International Std;

Signaling System based on ETCS Level 2;

Telecommunication System based on GSM-R based.

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Segments Definition

Oman Rail Project is divided

into 9 Segments for a total length of 2244 km

Segment Sector Sector Description Approx. Length Km

1

a Sohar to UAE Border at Sunaynah / Al Ain 136

b Al Buraymi Spur 27

c Spur to Sohar Railway Yard 8

2 a UAE Border at Al Ain - Sinaw 330

3 a Sinaw - Ad Duqm 340

4 a Ad Duqm - Thumrayt 554

b Thumrayt - Salalah Port 142

5 a Sohar Port - Muscat (Al Misfah) 242

b Link for Muscat Central Station 20

6 a Al Misfah - Sinaw 146

7 a Sinaw - Ibra 84

8 a Thumrayt - Mazyounah 157

9 a Sohar Port to UAE Border at Khatmat Milahah 58

Total Km 2244

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Segments Routes

North

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Segments and facilities placement

6

Segments and facilities placement

SEGMENT 1 sector a

Sohar to UAE border at Sunaynah/Al Ain

SEGMENT 1 sector b

Al Buraymi Spur

SEGMENT 1 sector c

Spur to Sohar railway Yard

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SEGMENT 2

Sunaynah to Sinaw

Segments and facilities placement

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SEGMENT 3

Sinaw to Ad Duqm

Segments and facilities placement

9

SEGMENT 4 sector a

Ad Duqm to Thumrayt

SEGMENT 4 sector b

Thumrayt to Salalah

Segments and facilities placement

10

SEGMENT 5 sector b

Link for Muscat

Central Station

SEGMENT 5 sector a

Sohar Port to Muscat

(Al Misfah)

Segments and facilities placement

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SEGMENT 6

Al Misfah to Sinaw

Segments and facilities placement

12

SEGMENT 7

Sinaw to Ibra

Segments and facilities placement

13

SEGMENT 8

Thumrayt to Al Mazyounah

Segments and facilities placement

14

SEGMENT 9

Sohar Port to UAE border

at Khatmat Milahah

Segments and facilities placement

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Project Critical Issues

Geology

Oman Mountains, located on south

eastern corner of the Arabian

Peninsula, form an arcuate chain,

approximately 700 km long and up to

120 km wide, stretching from the

Arabian Gulf and Straits of Hormuz in

the northwest to the Arabian Sea in

the southeast.

A special attention will be given to locations of difficult soils and rocks

formations:

sabkha soil,

weathered rock

drifting sand

in order to establish a detailed stratigraphy reconstruction and therefore to

allow the most suitable mitigation measures to be designed.

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Project Critical Issues

The Project envisages the necessity of tunneling to overcome the

orographic situation of the territory.

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Tunnelling

The alignment study and Concept Design aim at reducing to a minimum

the construction of tunnels.

The PDC will determine the type, location, length and cross sections of

such structures, taking account of the relevant geological and hydrological

conditions.

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Tunnelling

Tunnel cross-section will depend on:

1. Aerodynamic effects related to the

design speed on the line;

2. Rolling stock gauges;

3. Safe clearances for pedestrian

emergency evacuation;

4. Gauges and clearances for

miscellaneous equipment

associated with railway operation

and safety.

Sand Mitigation Study

Design of the most suitable Sand mitigation

measures, taking also in account the

Maintenance Regime to be applied during the

Operation.

Blown sand represents a critical issue in

Middle East countries such as Oman, Saudi

Arabia, UAE, etc., as it affects severely

roads and railway infrastructures.

Scope of Sand Mitigation Study

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Design approach for Sand Mitigation

Analysis of sections without any mitigation interventions, to assess the effectiveness of the mitigation proposed;

Analysis of sections mitigated with dunes in different geometric configurations (1 dune, more dunes, embankments or trenches);

Analysis of sections mitigated with barriers in different geometric configurations (different height barriers, embankments or trenches or suitable vegetation).

2D fluid dynamic simulations:

Geomorphologic study of the sites (soil composition, morphology of the area, geometry of the roughness of the ground);

Meteorological analysis: data from the literature or provided by the authorities / government agencies on the statistical study of weather and in particular wind

(quantitative definition of wind fields in the areas of construction of the railway and

for different return periods in terms of direction, intensity, wind speed and peak,

etc.);

Analysis and characterization of sand potentially transported (grain size curve, specific weight, etc.).

Data collection:

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Design approach for Sand Mitigation

Analysis of sections without any mitigation interventions, to assess the effectiveness of the mitigation proposed;

Analysis of sections mitigated with proper sand trapping measures in different geometric configurations;

Fluid dynamic simulations:

Geomorphologic study of the sites (soil composition, morphology of the area, geometry of the roughness of the ground);

Meteorological analysis: data from the literature or provided by the authorities / government agencies on the statistical study of weather and in particular wind

(quantitative definition of wind fields in the areas of construction of the railway and

for different return periods in terms of direction, intensity, wind speed and

directions, etc.);

Analysis and characterization of sand potentially transported (grain size curve, specific weight, etc.).

Data collection:

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Signaling and Telecommunication

Critical issues

Environmental Condition Presence of sand;

High temperature and thermal shock.

Maintenance Distance between faulty device and maintenance sites;

Power source availability.

Approach

Right choice of wayside devices both for Signalling and TLC; System architecture design (redundancy, more sources, etc.);

Simulations of radio coverage;

Right Placement of Facilities for maintenance (depot and workshop);

Right Sizing of devices stocks.

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Signaling

The signaling system will be designed to meet the highest standards of

flexibility, modularity, availability and with easy integration to the existing

infrastructure.

The performance based specifications for the signaling system will include the

following requirements:

ERTMS/ETCS Level 2, with a centralized OCC and no line side signals; GSM-R Telecommunication platform Train Detection System used to be suitable to the desert environment; Rolling Stock Management System integrated with OCC functions and

several check points installed by line side;

Implementation of COTO functionality (Computerized Optimization of Train Operations); Design developed according to European Rules (CENELEC 50126, 50128,

50129, 50159-1 50159-2).

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Signaling

Signaling_UNISIG RULES and ERTMS L2 Data flow

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Project Initial Data

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Component Quantity

Rails 12,000 km

Sleeper 10,200,000

Fastening 40,800,000

Track Components

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Component Quantity

Elastic pads 20,400,000

Ballast and

subballast

23,000,000 m

Switches and

crossing

670

Track Components

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Earthworks, Embankments and Drainage

Component Quantity

Geotextiles 60,000,000 m

Drainage (track

side pipes and

manholes)

2,250,000 meters

of pipes 13500

manholes

Earthworks 20,250,000 m

Cut and fills Cut 648,980,500

m associated fill

1060,000,000 m

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Roads and Row

Component Quantity

Un Metaled Roads

one side of ROW

3000 km

Metal Roads twin

carriage

1000 km

Security Fencing 6500km fencing

and 1200

pedestrian gates

and 300 vehicle

gates

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Structures

Component Quantity

Tunnels 35 km

Viaducts 45 km

Rail bridge 39 km

Wadi bridges 48 km

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Structures

Component Quantity

Animal

crossing

310

Pedestrian

crossing

98

RCC culverts 2,750,000 m

Flyovers/Und

erpasses

245

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Stations, depots and maintenance yards

Component Quantity

Stations small 30

Stations

intermediate

10

Stations large 6

Marshaling

yards

8

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Workshops

Component Quantity

Intermodal yards 9

Rolling Stock

Service Facilities

5

Heavy Duty

Maintenance

Workshops

3

Central Workshop

for maintenance

6

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Operation control centre

Component Quantity

Main

operational

control centre

1

Subsidiary

operational

control centre

5

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Signalling supply

System/equipment

Signaling supplier

Local

partner

ETCS wayside equipment X

ETCS on board equipment X

Control Center X

Electronic interlockings X

Point machines X

Track circuits X

Hot Box Detectors X

Cables (e.g. power, low voltage, fiber optics,

etc.)

X X

Signaling telecom equipment (e.g. SDH,

access equip, etc.)

X X

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Signalling supply

System/equipment

Signaling supplier

Local

partner

Power supply and distribution systems (e.g.

UPSs, batteries, etc.)

X X

Design X

Support (and training) to installation X

Installation (e.g. mechanical, electrical) X

Support (and training) to test &

commissioning

X

Test & commissioning X X

Training X X

Project Management X X

Maintenance X

Components repair

X

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Rolling stock for freight and passengers

Component Quantity

Freight locos 40

Shunting locos 30

Recovery locos 5

Diesel multiple

units (DMU)

passenger

30

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Component Quantity

Diesel units

(Lokos)

passenger

trains

15

Passenger

coaches

80

Freight Wagons

mixed type)

500

Rolling stock for freight and passengers

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Track components: Supply and Production

production

1. Rails

Quantity required: 12,000 km of rails 670,000 bars, 18 m length or 1,000,000 bars,12 m length

Quality control: supply from a qualified international supplier; the production process is subjected to a large number of quality control

steps.

Rail production plant

Rail Production plant in Oman it could be profitable also in view of future maintenance of railways

Rail Supply from foreign plants or existing plants in Middle East or bordering Countries

Stocking area

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Track components: Supply and Production

production

2. Sleepers

Quantity required: 10,200,000 sleepers

A large number of plants required in different locations nearby the future

railway alignment.

Production of a medium size plant is about 300,000 sleepers per year

At least 5 production plants are required to supply sleepers

in a range period of 4-5 years

Sleepers Production plant

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production

Quantity required: 23,000,000 cubic meters of ballast and subballast

A medium size quarry can have a production

of about 500/800 cubic meters per day

At least 10 quarries should be opened for stone

mining during the period of construction

Ballast quarry Crushing and screening plant

Track components: Supply and Production

3. Ballast

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production

Quantity required: 670 switches and crossing

For switches and crossing, supply

from qualified international suppliers is

advisable

Track components: Supply and Production

4. Switches and Crossing

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Plants and facilities for civil works

production

1. Work site

Areas equipped with plants facilities involved in works construction; Areas with logistic function equipped to host workmen and administrative

personnel during construction.

Work sites also represent authentic villages, independent and also equipped

for sanitary emergencies and leisure activities

Work sites can be located every 50-100 km alongside railway alignment

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Plants and facilities for civil works

production

2. Stocking sites

Areas dedicated at stocking large quantities of construction material

Soil for embankments Granular material Ballast Precast elements

These areas may be located alongside the railway alignment and anyway close

to the related works

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Plants and facilities for civil works

production

3. Crashing plants

Crashing plants can extend over areas of about 3,000 sqm, with research and development department, technical department, sales department, administrative

department, manufacturing unit and spare part warehouse.

feeding and pre-screening; crushing and screening; washing and recovery; transport and storage; classification and automation for both fixed and mobile structures.

Production and processing of aggregates, including:

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Plants and facilities for civil works

production

4. Concrete batching plants

Concrete batching plants produce various kinds of concrete including quaking concrete and hard concrete, suitable for large or medium scale building works, road and bridge works and precast

concrete plants, etc.

More recently is the availability of the mobile concrete batch plant. Multiple containers separately transport all the elements necessary for the production of concrete, or any other mixture, at the

specific job site.

Once production is started, the various components enter the mixer in the required doses and the finished mixed product comes out continuously ready for final use. It is also suitable for the

recovery of materials destined for landfill disposal, such as cement mixtures regenerated from

masonry rubble.

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Plants and facilities for civil works

production

5. Precast plants

Precast concrete parts: viaduct slabs, double walls, slabs and walls, faade elements, noise barrier walls, prefabricated cells, concrete sleepers.

These plants can be located nearby major structures.