Shortening LNG Storage Tank Construction Period by the Jack Climbing Method

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1 Gastech2017 -Technical sessions- Stream 3: Gas & LNG Storage & Containment Onshore Tanks Shortening LNG Storage Tank Construction Period by the Jack Climbing Method Tank Project Dept. Field Engineering Manager, Hirotsugu TATEISHI

2 IHI Corporation Resources, Energy and and Environment (Boiler, Gas Turbine/Gas Engine, LNG Terminal, Process Plant, Nuclear Eqipment, etc.) Aero Engines and Space (Jet Engine, Rocket) Resources, Energy and Environment Social Infrastructure and Offshore Facilities (Bridge, Transportation System, Security, etc.) Aero Engines and Space Social Infrastructure and Offshore Facilities General-Purpose Machinery (Compressor, Separator, Turbo charger, etc.) Industrial Systems and General-Purpose Machinery Industrial Systems (Steel Manufacturing Furnaces, Heat/Surface Treatment Equipment, Logistics Systems, Material Handling Equipment, etc.)

3 Construction Period of LNG Receiving Terminal 1st year 2nd year 3rd year 4th year Start of Construction Ready for Cool Down Tank Civil Tank Mechanical Terminal Civil Terminal Mechanical

4 Structure of Double Roof Type Tank ROOF STRUCTURE / PIPING OUTER ROOF INNER ROOF KNUCKLE PLATE INNER SHELL PLATE PC WALL SHELL INSULATION OUTER SHELL LINER PLATE BASE SLAB INNER BOTTOM PLATE BOTTOM INSULATION BOTTOM LINER PLATE

5 Structure of Deck Type Tank ROOF STRUCTURE / PIPING CONCRETE ROOF OUTER ROOF SUSPENDED DECK / INSULATION INNER SHELL PLATE PC WALL SHELL INSULATION OUTER SHELL LINER PLATE BASE SLAB INNER BOTTOM PLATE BOTTOM INSULATION BOTTOM LINER PLATE

6 Conventional Tank Construction Method #1 Outer Tank Air Rising Method PC WALL BASE SLAB AIR RAISING OUTER ROOF KNUCKLE PLATE INNER ROOF OUTER ROOF OUTER SHELL LINER PLATE INNER SHELL PLATE

7 Pros and Cons of Outer Tank Air Rising Method Outer Tank Air Rising Method Pros Less weather interruption / damage (Higher quality construction) Cons Longer construction period Higher risk of accident

8 Conventional Tank Construction Method #2 Inner Tank Air Rising Method PC WALL KNUCKLE PLATE BASE SLAB OUTER ROOF INNER ROOF OUTER SHELL LINER PLATE OUTER ROOF INNER SHELL PLATE AIR RAISING

9 Pros and Cons of Inner Tank Air Rising Method Inner Tank Air Rising Method Pros Shorter construction period Cons More weather interruption / damage Higher risk of accident

10 Overview of JCM Significant features of JCM Simultaneous construction of PC wall and inner shell plate Minimum aerial / lifting work JCM realizes Shorter construction period Higher level of safety / efficiency / quality

11 JCM Sequence for Double Roof Type Tank

12 JCM Sequence for Double Roof Type Tank

13 Effect of JCM for Double Roof Type Tank Outer Tank Air Rising Method Inner shell plate construction Base Slab PC Wall INSPECTOR Inner Roof/ Outer Roof Inner Shell Plate Roof A/R Outer Shell Liner Bottom Insulation/ Inner Bottom Plate Test Shell Insulation WELDER WORK FLOOR Roof Structure/Piping JCM Base Slab WORK FLOOR PC Wall Inner Roof 1st J/U Inner Shell Plate Final J/D Test About 9 months INNER SHELL PLATE Outer Shell Liner Shell Insulation Outer Roof Roof Structure/Piping Bottom Insulation/ Inner Bottom Plate Fitting / Welding / Inspection Jack Up

14 Quick summary- Double Roof Type Tank and Deck Type Tank Double Roof Type Deck Type OUTER ROOF (METALLIC) CONCRETE ROOF OUTER ROOF (METALLIC) INNER ROOF SUSPENDED DECK INNER SHELL PLATE INNER SHELL PLATE

15 JCM Sequence for Deck Type Tank

16 JCM Sequence for Deck Type Tank

17 Effect of JCM for Deck Type Tank Outer Tank Air Rising Method Base Slab PC Wall Outer Roof Roof Conc. Roof A/R Bottom Insulation Roof Structure/ Piping For Annular Part Outer Shell Liner Test Inner Shell Plate Shell Insulation JCM Bottom Insulation/ Inner Bottom Plate Base Slab Outer Shell Liner PC Wall Roof Conc. Outer Roof 1st Roof J/U Bottom Insulation For Annular Part Final Roof J/U Roof Structure/ Piping Test About 6 months Inner Shell Plate Shell Insulation Bottom Insulation/ Inner Bottom Plate

18 Experience #1 (Shin-Sendai Project)

19 Experience #2 (Soma Project)

20 Overall Summary What can JCM realize? Shorter construction period High level of safety / efficiency / quality This is an ideal method for constructing LNG tanks!

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