Cryogenic Tank - Typical Construction Sequence

Large Cryogenic above ground LNG Tank Full Containment (9% inner wall + PrePre-stressed concrete outer wall)

Typical Construction Sequence March 4th 2011

Storage & loading on site

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Storage & loading on site

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Storage & loading on site

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Soil Improvement STEP 1a – Soil Improvement (CMC)

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Soil Improvement STEP 1b – Controlled Modulus Columns (CMC)

Bottom Slab

Working Platform Level (CMC)

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Ground Level

Transition Layer

Controlled Modulus Columns

LNG Storage Tanks – erection Concrete slab STEP 1 - Bottom Slab

Corner Anchor to be installed before bottom slab concreting.

Concrete Wall

Corner Anchor (Carbon Steel) Bottom Slab

Stud Bolt Detail of “A” Re-bar

“A”

Bottom Slab Ground Level

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Concrete slab

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Slab reinforcement & prestressing cables casing

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LNG Storage Tanks - erection STEP 2 – Concrete wall

Re-bar

Reinforcement Concrete Forms

Anchor Plate to be installed.

Reinforcement

Bottom Slab Re-bar

Re-bar “B”

Detail of “B”

Concrete Form

Concrete Form Bottom Slab

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Ground Level

LNG Storage Tanks – erection STEP 3 – Concrete wall Re-bar Panel Reinforcement

Concrete Forms

Re-bar “C”

Platform

Concrete Form

Concrete Form Platform

Re-bar

Detail of “C”

Platform

Bottom Slab Ground Level

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LNG Storage Tanks – erection STEP 4 – Concrete wall Re-bar Panel

Reinforcement

Concrete Forms

“D”

Platform Re-bar Panel

Concrete Form

Hanger Platform

Platform

Hanger Platform

Hanger Platform Detail of “D” Bottom Slab

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Ground Level

Jumping formwork

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LNG Storage Tanks – erection STEP 6 – Assembly of roof center, outer supports & outside rain protection From Crane

Stairway Outer Support

Center Support

Outer Support

Ground Level

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Roof structure details

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Central temporary support

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Roof section lifting (25t)

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Roof section adjustment

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General view

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Roof plates welding

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Rainy weather impact  Taking care of rainy weather conditions on site, bottom liner will be erected & welding as soon as the metallic roof is water tight

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LNG Storage Tanks – erection STEP 7 – Assembly of roof sections and liner plates From Crane

From Crane

Roof Rafter

Stairway

Top Ring

Center Support

Outer Support

Outer Support

Annular Plate

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Bottom Liner Plate

Ground Level

Bottom liner plates welding

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LNG Storage Tanks – erection STEP 8 – Assembly of Suspended deck

Roof

Suspended Rod

Temporary Support

Outer Support

Outer Support Suspended Deck Ground Level

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Suspended deck

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Suspended deck welding

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LNG Storage Tanks – erection STEP 9 – Insulation work on Annular space Concrete Wall

Secondary Annular

Outer Support Inner Annular Plate Foam glass Concrete Ring Beam

Corner Anchor

Detail of “E” Roof

Outer Support

Perlite Concrete

Suspended Rod

Outer Support Suspended Deck

“E” Ground Level

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LNG Storage Tanks – erection STEP 10 – Ring Plate(Compression Ring Plate) “F”

Ring Plate

Ring Plate Re-bar Support

Detail of “F”

Roof

Suspended Deck Ground Level

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Metallic compression ring

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Metallic compression ring

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LNG Storage Tanks – erection STEP 11 – Roof Air Raising

Roof

Suspended Deck Ground Level

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Roof at lowest position

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Venting equipment

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Air rising

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Connection with compression ring

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Roof climbing

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Final position

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LNG Storage Tanks – erection Roof Concrete

STEP 13 – Side Liner Plate (Vapor Barrier)

Hoist

Side Liner Plate

③ Installation ② Opening Fabrication ①

Ground Level

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Wall liner erection & welding

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Corner protection insulation

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Corner protection plates

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LNG Storage Tanks – erection Roof Concrete

STEP 12 – Roof Concreting & Pressurizing

Opening Compressor Ground Level

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Pressurization & concreting

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Pressurization & concreting

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LNG Storage Tanks – erection Roof Concrete

STEP 14 – Inner shell plates erection

Inner Shell Plate

Opening

Inner Shell Plate

Inner Shell Plate

Turning Table

Inner Shell Plate Ground Level

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LNG Storage Tanks – erection STEP 15 – Secondary barrier

Roof Concrete

Concrete Wall Inner Shell Plate

Secondary Barrier

PIR Inner Shell Plate

Inner Shell Plate “G”

Opening Detail of “G” Ground Level

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Inner tank shell erection

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Automatic welding machine

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Welding machine Operator

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Shell top stiffener

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LNG Storage Tanks – erection Roof Concrete

STEP 16 – Bottom Insulation and Plate

Secondary Bottom Plate(9%Ni) Inner Bottom Plate(9&Ni) Foam Glass Perlite Concrete Inner Shell Plate Bottom Slab Bottom Liner Plate(C.S.) Opening

Detail of “H”

Inner Shell Plate

“H” Ground Level

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Foam Glass layers installation

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LNG Storage Tanks – erection STEP 17 Pump Column

Roof Concrete

Inner Shell Plate

Opening

Pump Column

Ground Level

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Bottom inlet stand pipe

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Inlet top nozzle with splash plate

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Pump column prefabrication

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Pump column erection

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Stilling well and bottom connection

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Cool down ring

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Purge piping

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NDE

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DIMENSIONAL

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VACUUM BOX

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LIQUID PENETRANT TEST

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X-RAY INSPECTIONS

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ALLOY MATERIAL IDENTIFICATION

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PRESSURE TEST

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AUTOMATIC US TEST

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LNG Storage Tanks – erection STEP 18 Hydrostatic, vacuum and Pneumatic Test

PRV

Inner Shell Plate Hydrostatic Test Level

Pump Inner Stairway Column

Ground Level

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SEA WATER TEST

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Pumping station

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PRESSURE & VACUUM TEST

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LNG Storage Tanks – erection Platform

Walkway

STEP 19 TOP PLATFORM PRV Nozzle

Suspended Deck

Inner Shell Plate

Staircase

Pump Inner Stairway Column

Ground Level

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Metallic top platform

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MAIN TOP PLATFORM

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Instrumentation

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INSTRUMENTATION

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VACUUM VALVES

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LNG Storage Tanks – erection STEP 20 Wall Insulation Glass Wool

Glass Wool Inner Shell Outer Shell

Gondola Side Liner

Inner Shell

Ground Level

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RESILIENT BLANKET

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RESILIENT BLANKET

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LNG Storage Tanks – erection STEP 21 Dome Space Insulation & Perlite Powder Filling

Walkway

PRV Nozzle Perlite Filling Nozzle

Glass Wool Suspended Deck Inner Shell Plate

Staircase

Pump Inner Stairway Column

Perlite Powder

Perlite Powder

Ground Level

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PERLITE FURNASE

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PERLITE VIBRATION & RESERVE

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SUSPENDED DECK INSULATION

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LNG Storage Tanks – erection Nitrogen Inlet Line

Oxygen Platform

STEP 22 Box-up and Nitrogen Purging

Walkway

PRV Nozzle Perlite Filling Nozzle

Glass Wool or Perlite powder

Suspended Deck Inner Shell Plate Perlite Powder Staircase

Pump Inner Stairway Column

Nitrogen

Ground Level

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DRYING EQUIPMENT

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N2 REGASIFICATION UNIT

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O2 ANALYSER & DEW POINT

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