1. Green Shipping Talal Al-Tamimi RasGas Company Limited
(Marketing and Shipping Group)

2. Presentation Contents
Introduction
Economies of scale
Reliquefaction plant
Hull Coatings
Ras Laffan Port – J-BOG
Main engine injection system “ME-GI”

3. World Class Gas Resource – Qatar North Field
5/2/2018
World Class Gas Resource – Qatar North Field
RasGas and Qatargas have developed world-class offshore and onshore facilities for the extraction, processing, storage and loading of gas from Qatar’s North Field.
World’s largest non-associated natural gas field
900 Trillion Standard Cubic Feet (SCF)
15 percent of world gas reserves
1971: Discovered North Field
1991: First gas produced from North Field
1996: First gas produced by Qatargas
1999: First gas produced by RasGas
2010: Qatar achieves LNG production capacity of 77 million tonnes per annum

4. Ras Laffan Port contains six LNG Loading berths:
LNG Berths:
Ras Laffan Port contains six LNG Loading berths:
Berth no.1 is operated by Qatargas
Berth no.2 is operated by RasGas. This berth can receive up to conventional vessels. Upgrading this berth to receive Q-flex is in process.
Berth no.3 Common lean Liquefied Natural Gas (CLLNG) RasGas and can receive up to Q-Max
Berths 4, 5 and 6 CLLNG and can receive up to Q-Max
More berths are being planned 3 4 6 5 2 1
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5. Introduction Qatar’s Liquefied Natural Gas (LNG) carrier fleet:
The State of Qatar LNG fleet consist of 71 LNG Vessels on long-term charter, the LNG fleet is divided into three classes:
26 conventional sized LNG ships each with cargo capacities of 125,000 m³ to 151,700 m³
31 Q-flex sized ships each with cargo capacity of 210,000 m³ to 217,000 m³
14 Q-max sized ship each with a cargo capacity of 263,000 m³ ~ 266,000 m³. Q-Max vessels are the largest in the fleet at 345 meters in length

6. Economies of Scale The Q-Flex/Q-Max fleet:
Benefit from economies of scale where more LNG can be transported per journey thereby lowering the transportation cost per unit of LNG. Although those vessels are much larger than the conventional vessels the fuel consumption is almost the same. This means that by using larger vessels the number of voyages are reduced resulting in lowering emissions to the environment.
Those vessels are fitted with a reliquefaction plant. Gas venting into the atmosphere is very unlikely in this type of LNG carrier.
In contrast to conventional LNG vessels these Q-Flex and Q-Max vessels can deliver all the cargo loaded as well as act as an efficient floating storage facility.

7. Benefits of Q-Flex and Q-Max
TANK 2
39,000m3
288 m
345 m
Tank 2
46,000m3
TANK 2
56,000 m3
345 m

8. Reliquefaction plant
The reliquefaction plant is the primary means of tank pressure control as well as allow capture of this natural boil off gas to comply with the IGC code, with the Gas Combustion Unit (GCU) being secondary.
A benefit of the reliquefaction plant is that all of the boil off gas, which is normally consumed in the boilers of the conventional vessels, is recovered. Effectively “what you load is what you deliver” thus improving the economics further.
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9. Benefits of Q-Flex and Q-Max Vessels
Further to the aforementioned benefits of the Q-Flex/Max Vessels there is a greater reduction on the green house gas (GHG) produced than from the conventional ships. The amount of CO2 from the conventional ships is around grams per tonne per nautical mile.
Given the much lower thermal efficiency of the steam propulsion plant on a conventional type LNG carrier this is still considered to be very good.
Conventional carrier GHG emission rating
Source:

10. Benefits of Q-Flex and Q-Max Vessels
Qatar took the steps to build the Q-Flex and the Q-Max LNG carriers which are the first of their type. The GHG emissions on board the new generation of LNG Carriers is further reduced and is accounts for 46% less GHG emissions per tonne nautical mile.
Q-Max GHG emission rating
Source:

11. Main Engine Gas Injection system
Maritime regulations are becoming more strict. The acceptable sulphur content in the fuel oil used in the shipping industry is being significantly reduced depending on the trading area. Therefore, after the gas injection system was presented into the market a proposal has been made to retro-fit systems to deliver natural gas at high pressure to the installed, existing diesel main engines onboard Qatar’s Q-flex and Q-max. By doing so the emissions will be further reduced and we will be able to comply with new (and future pending) regulations.
Also, given the reduced need for the use of residual fuel oils, the damage to the environment caused by the consumption of residual fuel oils will also be significantly reduced.
Brief description of the Fuel Gas Supply system:
The system will supply the gas from the vessel’s cargo tanks and deliver it to the main engine, the LNG will pass through a vaporizer to convert it to gas and then injected to the main engine as fuel.
11 | RasGas Confidential

12. FGSS Layout Valve Cubicle Master GV HP Gas [315 bar] Vaporizer
Steam
Glycol Loop
Condensate return
Valve Cubicle
Master GV
HP Gas [315 bar]
Vaporizer
ME Iso. Valve
Reliquefaction Plant
This is a short outline description of the Fuel Gas Supply System and scope of work on Two-Stroke Engines :
- The LNG is to be extracted from cargo tanks using dedicated submerged supply pumps. The LBOG will be routed to the buffer tank located on main deck to provide positive pressure to dedicated HP pumps.
The dotted line is the condensate return from Reliquefaction plant, this operation mode to be considered as an alternate LNG supply to the HP suction buffer tank, the overriding primary use of Reliquefaction for cargo tank pressure control is to be maintained, regardless of any propulsion demands. & The LNG FGSS will be totally independent of vessels Reliquefaction plant operations and tank spraying operation.
The Booster supply pumps, will be utilized to maintain a positive pressure on the suction side of the High Pressure (HP) pumps under all operating parameters.
The high pressure cryogenic pumps will raise the pressure up to 315 bars. The high pressure LNG will then feed to a forced vaporizer, and heated up to 45 deg C (±10 deg C) via an intermediate heating system.
The High-Pressure Gas from the forced vaporizer will be routed to ME-GI engines via double wall pipe; the pipe will be designed with ventilated double-wall piping and HC sensors for safety shutdown also the piping to be designed as to prevent gas outflow to the machinery space in the event of rupture of the inner pipe.
Buffer Tnk
Safe Zone
Haz. Zone
Booster Pump
LNG Pump
Cargo Tnk.
HP Pump

13. Main Engine Gas Injection system
5/2/2018
Main Engine Gas Injection system
Benefits of this conversion:
Qatar drive for lower emissions, table-1 shows the reduction in emissions.
Enhanced security of fuel supply
Reduce overall operating costs through reduced maintenance and increased time between overhauls.
Minimises the need for loading liquid fuel, thus optimising fleet length
Offsets and protects against increasing liquid fuel costs
Estimated emissions existing main engine
Estimated emissions main engine with gas injection system
Percentage Reduction
Load 100% g/kWh CO
CO2 -446
22.7%
NOx
NOx
12.6%
SOx
SOx
95% - 100%
PM (mg/m3)
PM (mg/m3) 0.34
37%
5% of Pilot fuel will give the Sox of 95%

14. Main Engine Gas Injection system
5/2/2018
Main Engine Gas Injection system
Project initiative:
The adoption of ME-GI is fully aligned to the initiative of the State of Qatar to move towards a much greener environment, both locally and globally. Using clean LNG as fuel not only reduces harmful direct emissions from the vessels, but also the indirect emissions from the refinery production of residual fuels.
By effectively having the “largest bunker tank in the world” the vessels bunkering requirements are greatly reduced, which significantly improves fleet length and project economics.

15. Jetty Boil-off Gas Recovery Project
5/2/2018
Jetty Boil-off Gas Recovery Project
Project initiative:
State of Qatar vision is to reduce the environmental footprint of the LNG industry. Now with full LNG production at Ras Laffan the amount of gas burned in the flare is on average of 0.7 mt per annum which account for 90% of the BOG production at Ras Laffan. This amount of gas, if recovered can be used to generate up to 750MW of power. Therefore Qatar Ministry of environment has stipulated the installation of this gas recovery system at Ras Laffan LNG terminal.
750Mw is equal to ??

16. Jetty Boil-off Gas Recovery Project
Project objectives:
JBOG is designed to minimise the flaring at the loading terminal in Ras Laffan to minimum practicable limit, reducing the environmental footprint of the BOG at Ras Laffan whilst significant in reducing the green house gases (GHG).
Alignment as Qatar is signatory to Global gas flaring partnership.
Conserve natural resources, when implemented the project will save up to 1 TCF of gas in 30 years.
Reduce NOx emission and improve air quality for local communities and globally
The current amount of BOG generated and flared at Ras Laffan is around 1,500,000m3 which will be reduced to 81,000m3 after implementing the Project.

17. Jetty Boil-off Gas Recovery Project

19. 5/2/2018
Hull Coatings
The conventional steam propelled Vessels were delivered with a conventional Self Polishing Co-polymer (SPC) coating system on the underwater hull. Qatar followed the initiative to reduce the emissions from its existing fleet, therefore we decided to use Foul Release Coatings (FRC) as an upgrade to conventional Vessels and from newbuild on the Q-Flex and Q-Max Vessels. With FRC there is no transfer of coating material to the sea, can reduce fuel consumption and is environmentally sustainable.
An additional benefit of FRC technology is that since nothing
can attach to the coating, there Is no transfer of harmful marine
organisms to or from Qatar.

20. Thank you
Questions?