Double Hull Oil Tankers: Guidelines for Surveys, Assessment and Repair of Hull Structures 2nd Edition 2020
This manual offers guidelines for double hull oil tankers constructed primarily for the carriage of oil?in bulk. It includes a review of survey preparation guidelines which cover safety elements and the preparations required before surveys can be carried out. The book highlights what to look for, possible causes and recommends viable repair methods.
The guidelines focus on the IACS Member Societies’ survey procedures but may also be useful in connection with survey/examination schemes of other regulatory bodies, owners and operators.
This manual has been developed using the best information currently available. It is intended only as guidance in support of the sound judgement of Surveyors, and is to be used at the Surveyors' discretion.
This book includes a review of survey preparation guidelines, which cover the safety aspects related to the performance of the survey, the necessary access facilities, and the preparation necessary before the surveys can be carried out.
The survey guidelines encompass the different main structural areas of the hull where damages have been recorded, focusing on the main features of the structural items of each area.
An important feature of the manual is the inclusion of the section which illustrates examples of structural deterioration and damages related to each structural area and gives what to look for, possible cause, and recommended repair methods, when considered appropriate.
The International Association of Classification Societies (IACS) manuals provide guidelines to assist the Surveyors of IACS Member Societies, and other interested parties, involved in the survey, assessment and repair of hull structures for certain ship types.
These guidelines focus on the IACS Member Societies’ survey procedures, but may also be useful in connection with survey/examination schemes of other regulatory bodies, owners and operators. It includes a review of survey preparation guidelines, which cover the safety aspects related to the performance of the survey, access facilities and the preparation necessary before the surveys can be carried out.
The survey guidelines encompass the different structural areas of the hull where damages have been recorded, focusing on the main features of the structural items of each area.
An important feature of the manual is the inclusion of the section that illustrates examples of structural deterioration and damages related to each structural area. It shows what to look for, possible causes and recommended repair methods when considered appropriate.
This manual has been developed using the best information currently available. It is intended only as guidance in support of the sound judgment of Surveyors, and is to be used at the Surveyors’ discretion. It is recognised that alternative and satisfactory methods are already applied by Surveyors. Should there be any doubt with regard to interpretation or validity in connection with particular applications, clarification should be obtained from the Classification Society concerned.
IACS Common Structural Rules for Tankers, implemented in April 2006 and updated in 2019, were developed in response to a consistent and persistent call from industry for an increased standard of structural safety. This was achieved through enhancing the design basis and applying engineering first principles. The development of the CSR for Tankers included review of existing Rules, new development using a first principle approach, application of the net thickness philosophy, an enhanced design environment and a longer life, ie 25 years North Atlantic. The Rules are applicable to double hull oil tankers exceeding a length of 150 metres.
Note: Throughout this document reference is made to various IACS Unified Requirements (UR), Procedural Requirements (PR) and Recommendations. All URs and PRs and key recommendations are available from the IACS website (http://www.iacs.org.uk ).
2 Classification Survey Requirements
2.2 Annual Surveys
2.3 Intermediate Surveys
2.4 Special Surveys
2.5 Drydocking (Bottom) Surveys
2.6 Damage and Repair Surveys
3 Technical Background for Surveys
3.3 Structural Load Descriptions
3.4 Structural Defects, Damages and Deterioration
3.5 Structural Detail Failures and Repairs
4 Survey Planning, Preparation and Execution
4.2 Survey Programme
4.3 Survey Planning Meeting
4.4 Conditions for Survey
4.5 Access Arrangement and Safety
4.6 Use of Boats and Rafts
4.7 Personal Equipment
4.8 Thickness Measurement and Fracture Detection
4.9 Survey at Sea or at Anchorage
4.10 Documentation on Board
4.11 Reporting and Evaluation of Survey
5 Structural Detail Failures and Repairs
5.2 Actions to be Taken by the Classification Society when Fatigue Failures have been Identified
5.3 Catalogue of Structural Detail Failures and Repairs
Dedicated to safe ships and clean seas, IACS makes a unique contribution to maritime safety and regulation through technical support, compliance verification and research development. More than 90% of the world’s cargo carrying tonnage is covered by the classification design, construction and through-life compliance rules and standards set but the twelve Members Societies of IACS.
IACS is a not for profit membership organisation of classification societies that establish minimum technical standards and requirements that address maritime safety and environmental protection and ensures their consistent application. It carries out this responsibility through its panels, expert groups and project teams and provides a Quality System Certification Scheme (QSCS) that its Members comply with, as an assurance of professional integrity and maintenance of high professional standards. IACS is recognized as the principle technical advisor of IMO.
- Number of Pages:
- Published Date:
- July 2020
- Binding Format:
- Book Height:
- 178 mm
- Book Width:
- 212 mm
- 0.9 kg
International Chamber of Shipping