Adriatic LNG Terminal (ALT) Roger D. Leick ALT Topsides Manager

Size: px
Start display at page:

Download "Adriatic LNG Terminal (ALT) Roger D. Leick ALT Topsides Manager"

Transcription

1 1 Adriatic LNG Terminal (ALT) Roger D. Leick ALT Topsides Manager

2 2 ALT Functional Requirements Offshore LNG storage and re-gas terminal under development by affiliates of ExxonMobil, Qatar Petroleum, and Edison for installation in Northern Adriatic, 17 km east of Porto Levante, Italy Designed to deliver annual average of 8.0 billion standard cubic meters of gas 80% of terminal capacity reserved for supply of LNG from Qatar s North Field by Ras Laffan Liquefied Natural Gas Company Ltd. (II) Can berth LNG carriers ranging in size from 65,000 to 152,000 m 3 LNG offloading via three innovative loading arms and one vapor return arm with enhanced operability in exposed conditions Two LNG storage tanks with total working capacity of 250,000 m 3 30-in diameter, 40-km long gas pipeline to onshore metering station

3 ALT -- An Industry First 3

4 4 ALT Project Commitment to HSE Deliver a safe, reliable, and operable facility at minimum cost through simple and effective design Comply with all locally applicable laws and regulations, and responsible standards in the absence of applicable regulations Personnel safety is a core value of the Project All accidents are preventable

5 5 Environmental Design Criteria Metocean criteria (wind and waves) based on calibrated North Adriatic hindcast which includes 20 continuous years of data plus 34 storms spanning 36 years Geotechnical criteria based on site-specific soil investigation utilizing Piezo Cone Penetrometer Tests (PCPT) and soil borings Seismic hazards based on a probabilistic seismic hazard assessment (PSHA) by D Appolonia and a twotier design approach (Operating Basis Earthquake (OBE) and Safe Shutdown Earthquake (SSE))

6 Campamento Casting Basin at Algeciras 6

7 Preparation of Casting Basin 7

8 Mooring and Berthing System 8

9 Modular LNG Storage Tanks 9 Self-standing, prismatic tank utilizing internal truss system => constructed entirely of 9% nickel steel Geometry conducive to panel line fabrication and automated welding => more efficient and tightly controlled fabrication process Designed not to leak during life of terminal => rigorous fracture mechanics design and extensive non-destructive test inspection Secondary containment system sized to contain any credible leak => provides extra measure of safety

10 Schematic of Modular LNG Tank 10

11 11 Secondary Containment System Vapour Barrier Expanded Perlite GBS INNER WALL 2 x 75mm Cellular Glass 5mm THK 9% Ni TANK OUTER SKIN 100mm Reinforced Screed 5mm THK 9% Ni 50 mm Screed 3 x 150mm THK Cellular Glass Insulation 100mm Screed AERATED CONCRETE GBS TANK FLOOR 3mm CARBON STEEL VAPOUR BARRIER

12 12 Unique LNG Offloading Arms Exposed location offshore requires specially adapted offloading arms to accommodate wave induced motions Conventional loading arms not well suited to this application because: Conventional cryogenic swivels more prone to wear-out prematurely under expected range of motions Connecting the arm(s) to a moving manifold on the LNG carrier is more difficult and could damage flange sealing face FMC Technologies developed Cable Targeting System (CTS) to increase allowable range of motions (by up to factor of 4)

13 Test of Prototype Loading Arm 13

14 ALT Topsides Layout 14 Living Quarters Power Generation & Heat Recovery Open Rack Vaporizers (ORV) & HP Sendout Pumps Concrete / GBS Mooring Dolphins Electrical & Instrument Building (EIB) Maintenance Building Loading Platform w/ Loading Arms Berthing Structures Boil-off Gas Compressors

15 ALT Pipeline System 15

16 Summary 16 ALT Terminal will represent an industry first and set a standard for future such terminals Safety, reliability, operability, and cost effectiveness of the ALT Terminal has been enhanced by the: Marriage of conventional technology (concrete GBS and LNG regas facilities) Logical extension of existing technology (LNG offloading arms equipped with cable targeting system) Judicious integration of new technology (Modular LNG tanks) ALT Project is committed to HSE => all accidents are preventable