Typical Suction Pile Seafastening Calculation Sheet

Project Development International ABO Phase 3 Suction Pile Seafastening Calculations PP00011-PDI-DS-CAL-00007

C03

09-Feb-15 Re-Issued for Construction

SRO

JCU

GPA

C02

16-Dec-14 Re-Issued for Construction

SRO

JCU

GPA

C01

24-Nov-14 Issued for Construction

SRO

RGA

GPA

A02

28-Oct-14 Issued for Internal Review

SRO

RGA

GPA

A01 Revision

22-Oct-14 Issued for IDC Date Description

SRO Originated by

RGA Checked By

GPA Approved By

Project Development International Limited 137-139 Gallowgate, Aberdeen, AB25 1BU Tel: +44 (0)1224 269060 www.pdi-ltd.com

Client

Doc. Title: Suction Pile Seafastening Calculations Doc. No: PP00011-PDI-DS-CAL-00007 Date: 09/02/15 Rev: C03 Calcs by: SRO Date: 22/10/14

Check by: RGA Date: 22/10/14

REVISION SHEET REV. NO.

DETAILS OF REVISION

A01

Issued for IDC

A02

Issued for Internal Review

C01

Issued for Construction

C02

Re-Issued for Construction Pile was repositioned to vessel starboard, analysis revised to suit new position

C03

Re-Issued for Construction Pile gusset detail 1 changed to bearing only due to vessel clash

PDi-PF-058 Rev C2

Page: 2 of 44

Doc. Title: Suction Pile Seafastening Calculations Doc. No: PP00011-PDI-DS-CAL-00007 Date: 09/02/15 Rev: C03 Calcs by: SRO Date: 22/10/14

Check by: RGA Date: 22/10/14

CONTENTS

1.0

INTRODUCTION

2.0

REFERENCES

3.0

SYSTEM DESCRIPTION

4.0

BASIS OF DESIGN

5.0

DESIGN CALCULATIONS

APPENDIX A - DETAIL DRAWINGS APPENDIX B - REFERENCE DRAWINGS APPENDIX C - STAAD INPUT FILE APPENDIX D - VESSEL ACCELERATIONS

PDi-PF-058 Rev C2

Page: 3 of 44

Doc. Title: Suction Pile Seafastening Calculations Doc. No: PP00011-PDI-DS-CAL-00007 Date: 09/02/15 Rev: C03 Calcs by: SRO Date: 22/10/14

Check by: RGA Date: 22/10/14

1.0 INTRODUCTION ENI are adding an addi*onal well ABO-12 to the ABO field, with *e backs to the exis*ng ABO FPSO at OML 125 and replacing the exis*ng ABO-3 Flowline/Riser. The deep water Block OML 125 (previously OPL 316) is located in the western part of the Niger Delta, about 50 to 80km from the Nigerian coast, in water depths ranging from 20 0 up to 1400m. CEONA (through Marine Pla