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SHIPYARDS: Differences between Tankers and FPSO Specification. Dr. Alwyn M c Leary, Senior Surveyor, Lloyd’s Register ASIA, Singapore Office, (+65) 63704505 [email protected] Presentation (20mins) Discussion (10mins).

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SHIPYARDS: Differences between Tankers and FPSO Specification

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SHIPYARDS:

Differences between Tankers and FPSO Specification

Dr. Alwyn McLeary,

Senior Surveyor, Lloyd’s Register ASIA, Singapore Office,

(+65) 63704505

[email protected]


Presentation (20mins) Discussion (10mins)

  • Outline a simplified model representing the FPSO Classification process

  • Validated the proposition that there is a lack of agreement between the shipyard tanker/FPSO specifications

  • Identify the key issues

  • Identify the gaps

  • Discuss the progress to date in closing these gaps

  • Outline a way forward


REGULATORY ISSUES

FEED Review

Project

Specification

(Client)

Vendor Specifications/Practices

Design to Rules/Codes

Experience

Installation

Modification

Rule + Service History

Design Appraisal

Refine

Design

=

Review

Comments

FPSO Classification Model


FPSO Classification Model (Codes and Standards)

FPSO

Hull

Mooring

Topsides

Heli-deck & Safety Systems

Marine Systems

Hull Structure

Process & Utilities System

Interfaces

LR Rules + International Codes / Standards

International Codes & Standards

LR Rules


Proposition: there exists a lack of agreement between shipyard tanker/FPSO specifications? YES/NO

  • Depends who you ask?

  • Generally an “interface” issue (Discipline Project Management)

  • Hull (shipbuilding standards + FPSO-Specific Loadings)

  • Everything else (offshore standards)

  • But majority of the project assembled in a shipyard

  • Regulatory Issues Govern


Key Issues

  • Regulatory Requirements

  • Interface (problems on previous projects)

    Physical

    Code/Specification

    Contractual

  • FPSO-Specific Loadings based approval (Site- & Operational-Specific Loadings)


Regulatory Requirements

  • Coastal State Authority and National Authority (National Administrations) requirements regarding applicable codes and standards (and dates/versions) govern and requires to be defined at the outset (e.g. SOLAS, MARPOL, Loadline, Tonnage). PMA?

  • If the vessel will disconnect and sail under own power then there may be two sets of requirements to be met (will require to be Flagged). The most onerous for individual systems will govern.

  • At present no clear universal Regulatory requirements for FPSOs established.


Interface Problem Areas

  • Escape and access routes, particularly configuration of ladders, etc

  • Tank entry requirements (in operations), PMA

  • Is MARPOL, SOLAS and LOADLINE applicable

  • NDT requirements based on code compliance at interface

  • Tolerances at interface

  • Hazardous Area definition

  • Drgs. with lines detailing the extent of responsibility?


West of Shetland

Hs

Northern North Sea

Central North Sea

Tp

Environmental Criteria: Site-specific100 Year Joint Probability Contours


LR FOIFL Rule, Requirement

LR Ship Rule, Requirement

Strength: Site Specific WSF(for harsh environment)


Gaps

  • Tendency to “re-invent the wheel” (not learning from previous projects)

  • 80% of Problems due to 20% of Causes (Ref. 1), Project Management and Contracting are Key Elements

  • Harmonisation of Regulatory Requirements

  • Specification Definition (defining interfaces), FPSO/JTP Future Alignment

  • Interface Management (point 2 above)

    Physical, Code, Contractual

    Ref. 1: “Capturing Lessons Learned During FPSO Projects”, JR Still, The Naval Architect, January 2004, pp19-22.


Progress in Closing Gaps

  • Lloyd’s Register Group works closely with FPSO clients to identify potential interface problems at an early stage in the project (e.g. FEED Review).

  • Continuous Rule development and internal R&D activities as well as participation in various JIPs over a number of years (e.g. FPSO-Specific Loadings Project, + future planning of alignment with JTP).

  • Preparation of Guidance Notes expanding Rule requirements and identifying important considerations (e.g. LR Group Guidance Note “FPSO INSTALLATIONS – AN OVERVIEW OF REGULATORY ISSUES”, OS/GN/99001).


Way Forward

Industry Driven Harmonisation of Regulatory Requirements

Lessons Learnt Exchange Between FPSO Owners/Operators (FPSOForum is probably already effective in this area)

Alignment of Future JTP based Tanker Rules and FPSO Design Apprasial Processes (Increased Transparency in Loading Assessment)


Summary

FPSO’s - NOT JUST A TANKER WITH SOME EQUIPMENT ON DECK!

REGULATORY ISSUES GOVERN (NO CLEAR SET OF REGULATIONS APPLY)

MANAGEMENT OF VARIOUS INTERFACES VERY IMPORTANT

FPSO-SPECIFIC LOADINGS ALIGNMENT TO FUTURE JTP RULES?


Contact

Alwyn McLeary

Senior Surveyor

Lloyd’s Register ASIA, Singapore Office,

Tel:(+65) 63704505

Email: [email protected]

Alastair H Jones

Oil and Gas Business Manager ASIA

Lloyd’s Register ASIA, Singapore Office,

Tel:(+65) 63704552

Email: [email protected]


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