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CONSTRUCTION SEQUENCE OF

PC OUTER WALL FULL CONTANMENT LNG STORAGE TANK

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Legend

: Outline of the tank

: Part under construction

: Concrete part completed

: Mechanical part completed

: Insulation part completed

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SOIL IMPROVEMENT OR PILING,

BLINDING CONCRETE

Soil improvement or piling

Blinding concrete for slab

Blinding concrete for staircase

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CONSTRUCTION OF CONCRETE SLAB

AND STAIRCASE FOUNDATION

Concrete slabForm work

Slab heating conduit

Staircase foundation

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PC OUTER WALL CONSTRUCTION,

ERECTION OF BOTTOM VAPOR BARRIER

1st lift of PC wall

Bottom vapor barrier

Form workStaircase Temporary opening

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PC OUTER WALL CONSTRUCTION,

ERECTION OF BOTTOM VAPOR BARRIER

Staircase

2nd lift of PC wall

Form work

Bottom vapor barrier

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PC OUTER WALL CONSTRUCTION,

PREPARATION FOR ROOF ASSEMBLY

Intermediate lift of PC wall

Staircase

Temporary support for roof assembly

Form work

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PC OUTER WALL CONSTRUCTION,

ROOF ASSEMBLY

Intermediate lift of PC wall

Roof liner supporting frame

Form work

Staircase

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PC OUTER WALL CONSTRUCTION,

ROOF AND SUSPENDED DECK ASSEMBLY

Intermediate lift of PC wall

Roof liner

Staircase

Suspended ceiling deck & hanger

Form work

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PC OUTER TANK WALL CONSTRUCTION,

ASSEMBLY OF ROOF AND SUSPENDED DECK

Top lift of PC wall

Form work

Roof compression ring

PC wall top haunch

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ASSEMBLY OF ROOF AND SUSPENEDED DECK,

PREPARATION FOR ROOF RAISING

Staircase

Temporary blower for roof air-raise

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ROOF RAISING

Air pressure

Temporary blower for roof raise

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WELD GUSSET BETWEEN ROOF AND COMPRESSION

RING, INSTALLATION OF ROOF PENETRATION

Roof liner support, liner and

suspended ceiling deck

Roof nozzle & manhole dome roof penetration

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CONSTRUCTION OF ROOF CONCRETE

Temporary blower for roof

concrete construction

Air pressure

Roof concrete

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CONSTRUCTION OF ROOF CONCRETE,

ERECTION OF WALL VAPOR BARRIER (LOWER)

AND BOTTOM INSULATION (LOWER)

Roof concrete

Wall vapor barrier (lower)

Bottom insulation (lower)

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CONSTRUCTION OF PLATFORM AND

ERECTION OF BOTTOM LINER

Platform

Bottom liner

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CONSTRUCTION OF PLATFORM, RING BEAM FOUNDATION

AND ERECTION OF ANNULAR PLATE

Platform

Ring beam foundation

Annular plate

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ERECTION OF INNER BOTTOM, WALL VAPOR BARRIER,

CORNER PROTECTION, BOTTOM INSULATION, AND

INSULATION FOR CORNER PROTECTION

Bottom insulation (top)Inner bottom

Wall vapor barrier (upper)

Temporary opening

Insulation for corner protection

Corner protection wall

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ERECTION OF INNER TANK WALL, INNER TANK BOTTOM,

WALL VAPOR BARRIER AND BOTTOM INSULATION

Automatic shell welding machine

Inner shell 1st & 2nd course

Bottom insulation (top)

Inner bottom

Wall vapor barrier (upper)

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ERECTION OF INNER SHELL AND PIPING

Inner shell intermediate

Temporary opening

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INSTALLATION OF PIPE SUPPORT, PLATFORM, HANDRAIL,

WALL VAPOR BARRIER, SUSPENDED DECK PENETRATION,

ERECTION OF INNER TANK WALL / GIRDER, AND PIPING

Inner shell upper

& top course

Dome space ladder & walkwaySuspended ceiling deck nozzle

& manhole penetration

Pipe support

Pipe rack or sleeper

Inner girder

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INSTALLATION OF ESCAPE LADDER,

PLATFORM AND HANDRAIL, AND PIPING

Escape ladder

PRV / VRV / instrument platformPlatform & handrail

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INSTALLATION OF PRV,VRV, INNER LADDER,

CRANE, HOIST, AND PIPING

Pump column

Inner ladder

PRV / VRV

Pump loading / offloading

crane or hoist

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CLOSING TEMPORARY OPENING,

AND PIPING

Inner shell temporary

opening closure

PC wall temporary opening closure

Corner protection temporary

opening closure

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HYDROTEST, PNEUMATIC TEST

AND PIPING

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SHELL INSULATION - RESILIENT BLANKET,

PIPING INSULATION, AND PAINTING

Shell insulation -

Resilient blanket

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ROOF INSULATION, ANNULAR SPACE INSULATION - PERLITE, AND

PIPING

Shell insulation - Perlite

Roof insulation

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LNG PUMP INSTALLATION,

COMMISSIONING OF INSTRUMENT AND ELECTRICAL,

LNG pump

LNG pump

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FINAL BOX-UP OF THE TANK,

DRYING AND N2 PURGING

Drying & N2 purging

equipment

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COOLDOWN

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START OPERATION