lng transfer systems for bunker shipsaip / hazid for gtt reach4 system hazid workshop aip in 2014...
TRANSCRIPT
LNG TRANSFER SYSTEMS FOR BUNKER SHIPS
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Assessing the Hazards of LNG
► Transportation temperature (down to -163C)
• Cargo containment system characteristics
• Insulation properties to keep the cargo cool
• Need for a second barrier
• Risk of brittle fracture in case of leak
► LNG leak becomes low flash point gas
• Flammable between 5 and 15 % in air
► Rapid phase transition (RPT)
► Global warming (methane is a GHG)
3
Facts in LNG transportation and STS at Sea
► No major issues in LNG transportation
► STS operations usually performed for FSRU’s
BUT
► Safety records must be kept in LNG bunkering
• Assessment of the transfer system is key
• Diversity of bunker and gas fuel ships
• Standard transfer systems and components
4
► Ship-To-Ship – LNG transfer – HAZID, HAZOP, QRA for a specific
operation or in order to fulfil EN1474-3 requirements
► Over 1.000 STS LNG transfer operations at sea
• Flexible hoses
• Excelerate, Exmar, Anthony Veder, etc
STS LNG Transfer Qualification
5
Loading Arms / STS LNG Transfer at Open Sea
► Relative motions between the units
► Storms, winds, tidal, currents, etc
► Suitable mooring devices and fenders
► Operational guidelines
► Sudden change in the conditions
• ESD system activation
• Disconnection
6
Diversification of Customers for LNG Bunkering
•FURETANK Courtesy
7
Small scale terminal
LNG Bunkering Chain Expansion
Truck to Ship / Bunkering station
2002
2012Terminal to Ship
Shore to Ship
2017
On purpose new builds5.000-8.000 m3
Ship to Ship
Typically less than
200 m3
Typically less than
1000 m3
Limited by
Ship’s
dimensions
8
► NYK / ENGIE / MITSUBISHI CORP. / FLUXYS just delivered
► 5.800 m3 SIRIUS VEDER under construction
► Multi-fuel bunker tankers (HFO/MGO/LNG)
► GTT membrane designs (4.000, 5.000 & 6.500 m3)
Courtesy of Sirius Veder
LNG Bunkering Chain Expansion. Bunker ships
HFO/MGO/LNG
Courtesy of Suazdiaz5.100 m3 LBV built at HHIC
Courtesy of Engie
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Courtesy of Houlder / Klaw
Technical Aspects of LNG Transfer Systems
► Suitable for cryogenic applications
• Adequate materials to cope with LNG temperature
• To withstand thermal cycles and
• To avoid fracture of materials
► Design to cover the required operating envelope(s)
• Articulated system (crane, arm, boom, davit, etc)
• Flexible hoses
► Appropriate equipment to avoid leaks
• Connection and disconnection is key
• Emergency disconnection possible in any event
10
► Main lines (supply and/or recovery)
• LNG supply
• Vapour return
• Inert gas supply
• Recovery of LNG from gas fuel ship?
► Typical components
• Crane, arm or handling structure
• Couplings (QCDC) and ERS
• Communication links & ESD systems, etc
Examples of Transfer System Lay-out
Diagrams of LNG bunkering
11
Components of Transfer System – Handling System
Courtesy of GTT Hybrid solution
► Crane parts (boom, pedestal, swivels, counterweights, bearing, etc)
► Pipes, hoses and valves (insulation if required)
► Systems (winches, hydraulic and or pneumatic devices, cylinders,
panels) to handle LNG parts described in the next slides
Courtesy of FMC
12
LNG Parts of Transfer System - Hoses
► Flexible pipes – hoses (Gutteling, Nexans, etc)
► Life span of hoses (identification, storage and disposal)
► Length/bending radius of transfer hoses
Courtesy of GuttelingCourtesy of TNO
13
LNG Parts of Transfer System - Couplings
► Cryogenic break away couplings
• The “weak link” of the transfer system
• Spring / hydraulic (pneumatic) release
► Cryogenic dry couplings (QCDC)
Courtesy of Klaw
Courtesy of Mann Tek
Courtesy of Arta
14
Regulations and Standards
► Two main IMO Codes involved
• IGF → Receiving ship
• IGC → Bunkering ship
► And in between ?
15
► ISO/TC 67/WG 10 PT1 → Technical specification ISO/TS 18683:2015 Guidelines for systems and installations for supply of LNG as fuel to ships
• EN 1474-1 “Design and testing of marine transfer systems”
Part 1: Design and testing of transfer arms,
• EN 1474-2 “Design and testing of marine transfer systems”
Part 1: Design and testing of transfer hoses, and
• EN 1474-3 “Design and testing of marine transfer systems”
Part 1: Offshore transfer systems.
Standards for LNG Bunkering
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Standards for LNG Bunkering
► NEW ISO 20519 - Ships and marine technology - Specification for bunkering of liquefied natural gas fuelled vessels
• Components to meet or exceed engineering standards, the IGC/IGF Codes, in addition to other requirements listed in the document.
Courtesy of Klaw
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► ISO 16904:2016 - Ships and marine technology - Specification for
bunkering of liquefied natural gas fuelled vessels• Length, configuration, description of the arms
• Swivel joints, structural bearings, accessories, pipework and fitting, welding,
corrosion and embrittlement protection and maintenance
Standards for LNG Bunkering
► ISO 20519 - Reference to ISO 16904:2016
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► ISO/AWI 21593 - Marine LNG fuel bunkering quick connect/disconnectcoupling standard (QCDC)
• Still a working document
• LNG fuel supply will not be regional
• Standard coupling preferable worldwide
Standards for LNG Bunkering
Courtesy of Klaw
Courtesy of Mann Tek
Courtesy of Arta
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► BV NI.618 LNG Bunkering guidelines
► BV NR.620 LNG Bunkering ships
• Technical and functional requirements for the
LNG transfer system
• Additional requirements for the ship itself
► IACS Rec 142 LNG Bunkering Guidelines
• BV involved in project management
Classification Rules & Guidelines for LNG Bunkering
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► Transfer system on board of 5.100 m3 bunkering vessel
► HAZOP of LNG transfer system in order to support its qualification
► Qualification of the LNG Transfer system
• Design assessment
• Certification of components
► Final attestation of compliance
Application of NR.620 Regulation
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AiP / HAZID for GTT Reach4 System
► HAZID workshop
► AiP in 2014 based in Hazid report & other relevant info
► LNG bunker ships (4.000 – 6.500 m3)
Courtesy of GTT
Courtesy of GTT
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Courtesy of Engie
Move Forward with Confidence
THANK YOUSpeaker: Carlos GUERRERO