The effect of IMO goal-based new ship construction ...
Transcript of The effect of IMO goal-based new ship construction ...
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The effect of IMO goal-based new ship construction
standards on classification societies
Heike Hoppe
Senior Technical Officer
Maritime Safety Division, IMO
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IACS
Non-governmental organization in consultative status with IMO since 1969
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IMO and classification society requirements
SOLAS regulation II-1/3-1
“In addition to the requirements containedelsewhere in the present regulations, shipsshall be designed, constructed andmaintained in compliance with the structural,mechanical and electrical requirements of aclassification society which is recognized bythe Administration in accordance with theprovisions of regulation XI/1 or withapplicable national standards of theAdministration which provide an equivalentlevel of safety.”
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MSC/Circ.788
A.739(18) - Guidelines for the authorization of recognized organizations acting on behalf of Administrations
A.789(19) - Specifications on the survey and certificate functions of recognized organizations acting on behalf of the Administration
MSC/Circ.710 - Model agreement for the authorization of recognized organizations acting on behalf of the Administration
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What does goal-based mean?
Goal-based:
“People shall be prevented from falling over the edge of a cliff.”
Prescriptive:
“You shall install a 1 metre high rail at the edge of the cliff.”
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History
C 89 (2002) First proposal
MSC 77 (2003) New item
C 90 (2003) Strategic Plan
A 23 (2003) Long-term work plan
MSC 78 (2004) 5-tier system agreed
MSC 79 (2004) Key issues agreed
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Basic 5-tier system
Tier I Goals (safety objectives)
Tier II Functional requirements
Tier III Verification of compliance criteria
Tier IV Technical procedures and guidelines, classification rules, industry standards
Tier V Codes of practice and safety and quality systems for shipbuilding, ship operation, maintenance, training, manning, etc.
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GBS basic principles
broad, over-arching standards that ships are required to meet during their lifecycle;
the required level to be achieved by the requirements applied by class societies, other ROs, Administrations and IMO;
clear, demonstrable, verifiable, long standing, implementable and achievable, irrespective of ship design and technology;
specific enough in order not to be open to differing interpretations
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Tier I goals
adequate strength, integrity and stability
constructed of materials for environmentally acceptable dismantling and recycling
providing for safe access, inspection and proper maintenance
fit for envisaged operating and environmental conditions
lasting for a specified design life
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Tier II - Functional requirementsDesign
II.1 Design life
II.2 Environmental conditions
II.3 Structural strength
II.4 Fatigue life
II.5 Residual strength
II.6 Protection against corrosion
II.7 Structural redundancy
II.8 Watertight and weathertight integrity
II.9 Design transparency
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Tier II - Functional requirementsConstruction
II.10 Construction quality procedures
II.11 Survey
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Tier II - Functional requirements
In-service considerations
II.12 Maintenance
II.13 Structural accessibility
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Tier III – Verification
Rules for Rules, not for ships
Verification authority
Verification process
Acceptance criteria
Guidelines for verification
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Tier IVTechnical procedures and
guidelines, classification rules and industry standards
IMO requirements
Administration requirements
Class requirements
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Tier VCodes of practice and safety
and quality systems for shipbuilding, ship operation,
maintenance, training, manning, etc.
Industry standards
Industry practices
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Verification and class
4 basic steps:
rules of class meet GBS
ship design meets class rules
ship construction meets class rules
ship meets rules throughout life
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Verification process
IMO Group of Experts
Verification criteria
Review/audit of class rules
Review/audit report
Class rule changes
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IACS CSR
IACS Common Structural Rules for Bulk Carriers
IACS Common Structural Rules for Double Hull Oil Tankers