Tripartite meeting Beijing, 8-9 November 2008 Status and Early Experience of CSRs Gary Horn Director Rules & Standards, ABS IACS Hull Panel Chair

Update on CSR History of the Common Structural Rules – Adoption January 2006 – Implementation April 2006 – One year feedback period before developing harmonization plan – Currently ongoing: CSR Maintenance CSR Harmonization

IACS Organisation for CSR

Tripartite meeting Beijing, 8-9 November 2008 Update on CSR Maintenance

Adopted CSR Rule Changes and Corrigenda Tanker: – Rule Change Notice 1 (Sept 2006) – Corrigenda 1 (Apr 06) – Corrigenda 2 (July 06) – Corrigenda 3 (Nov 2007) – Rule Change Notice 2 (Feb 2008) – Corrigenda 4 (June 2008) Bulk Carrier: – Corrigenda 1 (May 06) – Corrigenda 2 (Jan 07) – Corrigenda 3 (July 07) – Corrigenda 4 (Sept 07) – Rule Change Notice 1 (Nov 2007) – Rule Change Notice 2 (Feb 2008) – Corrigenda 5 (May 2008) – Rule Change Notice 3 (12 Sept 2008) Tanker consolidated version 1 July 2008 Bulk Carrier consolidated version 1 July 2008

Current CSR Rule Change Proposals Tanker: – RCP 3 Accepted by HP 1 st round of TC and Industry Group review (July – Aug 2008) Comments incorporated or addressed by CSR PT2 2 nd round of TC and Industry Group review starting now (Oct – Nov 2008) Publish January 2009 Effective date 1 July 2009

Current CSR Rule Change Proposals Bulk Carrier: – RCP 4 Accepted by HP 1 st round of TC and Industry Group review (July – Aug 2008) Comments incorporated or addressed by CSR PT1 2 nd round of TC and Industry Group review starting now (Oct – Nov 2008) Publish January 2009 Effective date 1 July 2009

Revision History – Tracking Database IACS CSR Tracking Database is ready to go on-line Objective - Provide users with a searchable database on CSR revision history with supporting materials. - Provide users easy and quick access to a full and up-to-date history of a particular requirement Test and development: It has been tested since Jan 2008, and is now ready to go on-line to general public as a development version. Web link:

Revision History – Tracking Database What is published: - Full History of Revision (Rule Changes and Corrigenda) on a paragraph by paragraph basis; - Date of approval, what was amended/corrected, Technical Background, implementation date Search Facility Search and sort out rule change text by Rule Change Notice/Corrigenda No., approval date, or effective date etc. Industry and interested users are invited to contact the IACS CSR Secretariat for log- in IDs and a User Manual.

IACS CSR Knowledge Centre (KC) activity (as of 31 July 2008) KC since 1 August 2006 to capture Questions & Answers, Common Interpretations, and Rule Change requests 657 entries in the database relating to the Tanker Rules, 435 to the Bulker Rules and 8 to both sets of Rules 550 of the items have been completed (195 tanker, 349 bulker and 6 both) 222 items led to a rule change being requested (around 50% editorial changes)

Types of changes Category I Corrigenda; corrections of Category I do not affect the technical background nor intention of the requirement, they are not controversial, i.e. they correct an obvious error. Category II Rule changes; which possibly affect scantling requirements or the technical background. IACS PR32 – CSR Maintenance

IACS PR32 - CSR Maintenance Rule Change Proposals are reviewed by Members’ Technical Committees: Based on the input from the first review, Rule Change Proposals may be amended and are sent back to the Technical Committees for second review.

IACS Council decisions regarding PR 32 implementation : Hull Panel should be conservative about issuing Corrigenda. “Corrections” to the Rules which require additions to the Rule text must be dealt as Rule Changes. PR 32 Annex A, Attachment 2, Para 6: Permsec should publish the approved simple Answers to Questions, Clarifications and CIs, upon confirmation by the PT Manager, on the IACS CSR Website. PR 32 Annex A, Attachment 2, Para 7: A summary report on Q&As and CIs is produced twice a year and sent to Project Teams dealing with Rule maintenance. The Project Teams carry out periodical review, at least twice a year, of the Q&A and CIs to determine the need for Rule changes. IACS PR32 - CSR Maintenance

Cross Check Project Status Prescriptive Rules Cross Check and FEA Cross Check All 10 IACS members involved First phase of the Cross Check for Tanker and Bulk Carrier calculations has been completed The results provide a benchmark for the societies to verify their calculation tools The results indicate reasonable coherence Common interpretations and/or Rule changes will be needed to clarify the application of the Rules Additional work will be carried out to cover more ships

Tripartite meeting Beijing, 8-9 November 2008 Update on CSR Harmonization

Harmonized Structural Rules for Oil Tankers and Bulk Carriers Deliverables – Common Rules covering Oil tankers and bulk carriers – 3 booklets: Common parts for both types Specific part applicable to Oil Tankers Specific part applicable to Bulk Carriers Issue of complete harmonized rule for stakeholder comment Dec 2011

General Action Plan for CSR Harmonisation Items identified at CSR release for long term harmonisation: – Wave loads – Fatigue – Finite element analysis – Buckling – Prescriptive requirements Comments from ICS: – Quartering Sea – Corrosion – Welding – FEM analysis

Project Teams Established in 2008 HPT 1 Wave Loads Harmonization of the Loads Includes re-examination of the environmental data and quartering sea condition for bulk carriers HPT 2 Buckling Harmonization of Buckling calculation methods for prescriptive and FEM HPT 3 FEAHarmonization of FEM calculation methods HPT 4 Corrosion Re-examination of data HPT 5 Welding Review of welding requirement especially in way of high stress areas HPT 6 Fatigue assessment of hatch corners of Bulk Carriers under Quartering Sea for updating CSR BC HPT 7Ship in Service Criteria

Project Status HPT 1 Wave Loads Detail action plan and work schedule defined Comparison of 2 CSR Rules in progress for the motions, accelerations and the outside pressure Sub-PT for Re-Examination of the environmental data For quartering sea : connection btwn HPT1 & HPT6 HPT 2 Buckling Detail action plan and work schedule defined Work in progress (slenderness and prescriptive formulae) HPT 3 FEA Detail action plan and work schedule defined Rule comparison in progress

Project Status HPT 4 Corrosion 1 Detail action plan defined HPT 5 Welding Detail action plan and work schedule defined 1 IACS will welcome corrosion data from ICS and other industry associations for analysis with the current IACS data.

Project Status HPT 6 Fatigue of Hatch Corner under quartering sea in CSR BC 3 different models of BC-A investigated with respect to the structural response under pure torsion. Comparison made between the structural response of the global (Complete ship) models and 3-Cargo-Hold-models. Boundary conditions for the 3-Cargo-Hold-model are investigated HPT 7 Ship in Service Work in progress under supervision of Survey Panel

Thank you Status and Early Experience of CSRs Gary Horn Director Rules & Standards, ABS IACS Hull Panel Chair