PNW LNG Construction Methodology for Marine Facilities · PDF file3.2 Floating Marine-Based...

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  • AppendixG.20HatchReportPacificNorthWestLNG

    ConstructionMethodologyforMarineFacilities

  • Pacfic NorthWest LNG Engineering Report PNW LNG Jetty Alternatives Review H345670

    PNW LNG Construction Methodology for Marine Facilities (EA Submission)

    H345670-0000-12-124-0011, Rev. 1,

    Ver: 04.02 Hatch 2014 All rights reserved, including all rights relating to the use of this document or its contents.

    Construction Methodology Description

    PNW LNG Construction Methodology for Marine Facilities (EA Submission)

    H345670-0000-12-124-0011

    2014-12-11 1 Approved for Use L. Wang/ M. Nutter/ C. Rosner

    T. Martin H. Westerman D. Kyle

    DATE REV. STATUS PREPARED BY CHECKED BY APPROVED BY APPROVED BY

    Director, Ports and Marine Client

  • Pacfic NorthWest LNG Engineering Report PNW LNG Jetty Alternatives Review H345670

    PNW LNG Construction Methodology for Marine Facilities (EA Submission)

    H345670-0000-12-124-0011, Rev. 1, Page i

    Ver: 04.02 Hatch 2014 All rights reserved, including all rights relating to the use of this document or its contents.

    Table of Contents

    1. Introduction .................................................................................................................................... 1

    1.1 Design Status ...................................................................................................................... 1 1.2 Scope of Work ..................................................................................................................... 2 1.3 Basis of Report .................................................................................................................... 2 1.4 Definitions ........................................................................................................................... 3

    2. LNG Jetty - Suspension Bridge Construction Methodologies .................................................. 5

    2.1 Bridge Marine Foundations ................................................................................................. 5 2.1.1 South West Anchor Block Construction ................................................................. 5 2.1.2 South West Tower Foundation Construction ....................................................... 14

    2.2 Bridge Superstructure ....................................................................................................... 16 2.2.1 South West Tower Construction .......................................................................... 16 2.2.2 Suspension Cable Construction ........................................................................... 18 2.2.3 Deck Superstructure Construction ....................................................................... 20

    3. LNG Jetty - Trestle & Berth Construction Methodologies ....................................................... 23

    3.1 Overview ........................................................................................................................... 23 3.2 Floating Marine-Based Method ......................................................................................... 24

    3.2.1 Construction Equipment ....................................................................................... 24 3.2.2 Marine-Based Construction Schedule and Equipment Profile ............................. 25

    3.3 Cantilever Construction Method ........................................................................................ 26 3.3.1 Construction Equipment ....................................................................................... 28 3.3.2 Construction Sequencing ..................................................................................... 30 3.3.3 Cantilever Construction Schedule and Equipment Profile ................................... 35

    3.4 Pile Driving Techniques .................................................................................................... 36 3.5 Pile Drilling Techniques .................................................................................................... 37 3.6 Comparison of Cantilever and Marine-Based Construction Methods ............................... 39

    4. Lelu Island Access Bridge Construction Methodologies ........................................................ 41

    4.1 Construction Methodology ................................................................................................ 41 4.2 Construction Schedule and Equipment Profile ................................................................. 42

    5. Pioneer Dock Construction Methodologies .............................................................................. 43

    5.1 Construction Methodology ................................................................................................ 43 5.2 Construction Schedule and Equipment Profile ................................................................. 44

    6. MOF Construction Methodologies ............................................................................................. 45

    6.1 Dredging Methodology ...................................................................................................... 45 6.1.1 Marine Sediment Dredging .................................................................................. 45 6.1.2 Drilling and Blasting ............................................................................................. 46 6.1.3 Rock Dredging ..................................................................................................... 47 6.1.4 Phasing and Schedule ......................................................................................... 50

    6.2 Construction Methodology ................................................................................................ 51

  • Pacfic NorthWest LNG Engineering Report PNW LNG Jetty Alternatives Review H345670

    PNW LNG Construction Methodology for Marine Facilities (EA Submission)

    H345670-0000-12-124-0011, Rev. 1, Page ii

    Ver: 04.02 Hatch 2014 All rights reserved, including all rights relating to the use of this document or its contents.

    6.3 Construction Schedule and Equipment Profile ................................................................. 52

    7. Conclusions .................................................................................................................................. 54

    7.1 Progression of Marine Facilities Design ........................................................................... 54 7.2 Construction Schedule and Equipment Profile ................................................................. 54

    8. References .................................................................................................................................... 57

    List of Figures Figure 2-1: Elevated Jack-up Barge in Operation ......................................................................................... 6 Figure 2-2: Temporary Pile Supported Work Platform .................................................................................. 7 Figure 2-3: Marine Derrick (Barge Mounted Crane) ..................................................................................... 9 Figure 2-4: Cofferdam ................................................................................................................................. 11 Figure 2-5: Barge Loaded with Concrete Pump Truck and Concrete Trucks ............................................. 13 Figure 2-6: Tower Crane ............................................................................................................................. 17 Figure 2-7: Spinning of Main Suspension Cable......................................................................................... 19 Figure 2-8: Cable Clamp ............................................................................................................................. 19 Figure 2-9: Final Cable Wrapping ............................................................................................................... 20 Figure 2-10: Deck Segment Installation ...................................................................................................... 21 Figure 3-1: Typical LNG Trestle Structure under Construction ................................................................... 23 Figure 3-2: Cantilever Construction with Cantitraveler Platform ................................................................. 27 Figure 3-3: Cantilever Construction with Cantilevered Bridge .................................................................... 29 Figure 3-4: Cantitraveler Construction Sequence ....................................................................................... 31 Figure 3-5: Cantilevered Bridge Construction Sequence ........................................................................... 34 Figure 6-1: Typical Jack-up Barge .............................................................................................................. 46 Figure 6-2: Typical Drilling Rig on Tracks ................................................................................................... 47 Figure 6-3: Typical Backhoe Dredger ......................................................................................................... 48 Figure 6-4: Typical Elevated Backhoe ........................................................................................................ 50 Figure 7-1: Marine Facility Construction Schedule and Equipment Profile ................................................ 55

    List of Appendices

    Appendix A MOF Dredging Methodology (EA Submission)