Tripartite Meeting Beijing, 1 November 2005 IMO GBS Classification Societys View about the Scope, Ve - PowerPoint PPT Presentation

Loading...

PPT – Tripartite Meeting Beijing, 1 November 2005 IMO GBS Classification Societys View about the Scope, Ve PowerPoint presentation | free to view - id: 11c8b5-YzZlN



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Tripartite Meeting Beijing, 1 November 2005 IMO GBS Classification Societys View about the Scope, Ve

Description:

Tripartite Meeting Beijing, 1 November 2005 IMO GBS Classification Societys View about the Scope, Ve – PowerPoint PPT presentation

Number of Views:40
Avg rating:3.0/5.0
Slides: 20
Provided by: ugosa
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Tripartite Meeting Beijing, 1 November 2005 IMO GBS Classification Societys View about the Scope, Ve


1
Tripartite MeetingBeijing, 1 November 2005
IMO GBSClassification Societys View about
the Scope, Verification Process and Acceptance
CriteriaRoberto P. Cazzulo, RINAChairman of
IACS EG/GBS
2
Goal-Based Regulatory Framework
IMO GBS
(ref. MSC78/6/2)
3
Expectations for New Buildings
  • Shipping Industry
  • Fit for purpose
  • User friendly
  • Public / Regulators
  • Safe
  • Environmentally Friendly

4
Basic Principles of the IMO GBS
  • The IMO GBS are
  • broad, over-arching safety, environmental and/or
    security standards that ships are required to
    meet during their lifecycle
  • the required level to be achieved by the
    requirements applied by class societies and other
    recognised organisations, Administrations and IMO
  • clear, demonstrable, verifiable, long standing,
    implementable and achievable, irrespective of the
    ship design and technology
  • specific enough in order not to be open to
    differing interpretations.

5
Holistic Approach
Opinion expressed by IMO Members The regulatory
framework should cover the whole ship safety but
focusing for the time being on ship structure
6
Goal-Based Regulatory Framework
IMO GBS
Tier III
7
IMO GBS Tier I - Goals
  • Ships are to be designed and constructed for
  • a specified design life
  • to be safe and environmentally friendly,
  • when properly operated and maintained
  • under the specified operating and environmental
    conditions,
  • in intact and specified damage conditions,
  • throughout their life.

(ref. MSC80/WP.8)
8
IMO GBS Tier II - Functional Requirements
  • Structural strength
  • Ships should be designed with suitable safety
    margins
  • to withstand at net scantlings, in intact
    condition, the environmental conditions
    anticipated for the ships design life and the
    loading conditions appropriate for them, which
    would include full homogeneous and alternate
    loads, multi-port and ballast voyage, and ballast
    management condition loads and occasional
    overruns / overloads during loading/unloading
    operations, as applicable to the class
    designation and
  • appropriate for all design parameters whose
    calculations involves a degree of uncertainty,
    including loads, structural modelling, fatigue,
    corrosion, material imperfections, construction
    workmanship errors, buckling and residual
    strength.
  • The structural strength should be assessed
    against
  • excess deformations
  • buckling
  • yielding
  • fatigue
  • ultimate strength (of the hull girder, plate and
    stiffeners)
  • The structural members should be designed to
    facilitate load/discharge of all contemplated
    cargoes to avoid damage by loading/discharging
    equipment which may compromise the safety of the
    structure.

9
Limit States for Structural Rules
10
IMO GBS Tier II - Functional Requirements
  • Residual strength
  • Ships should be designed to have sufficient
    strength
  • to withstand the wave and internal loads in
    specified damaged conditions, such as collision,
    grounding or flooding and
  • actual foreseeable scenarios should be
    investigated in this regard as far as reasonably
    practicable.
  • Residual strength calculations should take into
    account
  • ultimate reserve capacity of the hull girder
  • permanent deformations
  • post-buckling behaviour.
  • Structural redundancy
  • Ships should be of redundant design and
    construction so that any localised damage of any
    structural member will not lead to immediate
    consequential failure of other structural
    elements, leading to loss of structural and
    watertight integrity

11
IMO GBS Tier II - Functional Requirements
  • Protection against corrosion
  • Measures to protect ships against corrosion
    should be applied to ensure that the net
    scantlings required to meet the structural
    strength provisions are maintained throughout the
    specified design life, including
  • Coatings, which should be selected as a function
    of the intended use of the compartment, materials
    and application of other corrosion prevention
    systems. Where coating is required to be applied,
    the design coating life is to be specified.
  • Corrosion additions, which should be added to the
    net scantlings and should be adequate for the
    specified design life, determined on the basis of
    exposure to corrosive agents and whether the
    structure is protected by corrosion prevention
    systems.

12
IMO GBS ? - Safety Acceptance Criteria
13
IMO GBS ? - Safety Acceptance Criteria
Proposed level from i.e. MSC 72/16
14
IMO GBS Tier III Verification Criteria
Procedures for demonstrating and verifying that
the rules and referenced industry standards on
Tier IV meets the IMO goals and functional
requirements on Tier I and Tier II
Goal-Based Regulations
Industry Standards
WHAT?
HOW?
BY WHOM?
15
IMO GBS Tier III Verification Criteria
WHAT?
IMO GBS Tier II Functional Requirements
  • DESIGN
  • Environmental conditions (II.2)
  • Strength (II.3)
  • Fatigue (II.4)
  • Residual Strength (II.5)
  • Corrosion protection (II.6)
  • Structural redundancy (II.7)
  • Watertight integrity (II.8)
  • CONSTRUCTION
  • Quality procedures (II.10)
  • Survey of new buildings (II.11)
  • SHIPS-IN-SERVICE
  • Maintenance (II.12)
  • Structural accessibility (II.13)

Statutory Requirements
Class Rules
Industry Standards
16
IMO GBS Tier III Verification Criteria
HOW?
IMO GBS
Class Rules
  • TEXT OF THE RULES
  • BACKGROUND DOCUMENTATION
  • BENCHMARK CALCULATIONS
  • RULE COMMENTARY REPORT

17
IMO GBS Tier III Verification Criteria
BY WHOM?
IMO GBS
Class Rules
  • RECOGNISED ORGANISATIONS
  • FLAG ADMINISTRATIONS
  • IMO
  • ALL INTERESTED PARTIES

18
Draft Common Rules for Hull Structures
  • Joint Tanker Project
  • Double Hull Oil Tankers
  • Length greater than or equal to 150m
  • Joint Bulker Project
  • SSS and DSS Bulk Carriers
  • Length greater than or equal to 90m

19
THE END
About PowerShow.com