"Introduction 1 The 2013 edition of the Rules for Building and Classing Floating Production Installations consists of the seven (7) Parts as shown in Table 1. In general these seven Parts subdivide these Rules into parts that are more consistent with other ABS Rules. With regard to two Parts@ Part 1@ and Part 2: a) The purpose of the generic title ABS Rules for Conditions of Classification ?C Offshore Units and Structures (Part 1) is to reflect the expanded contents of PART 1@ as a result of including consolidated requirements for ""Classification"" applicable to all types of and sizes of units@ installations@ vessels or systems in offshore service@ etc.@ as specified in the Foreword to Part 1. Additional specific requirements are contained in Part 1 of these Rules for Building and Classing Floating Production Installations. b) The purpose of the generic title ABS Rules for Materials and Welding of PART 2 is to emphasize the common applicability of the requirements to ABS-classed vessels@ other marine structures and their associated machinery@ and thereby make PART 2 more readily a common ""PART"" of various ABS Rules and Guides@ as appropriate. 2. The numbering system applied in the Rules is shown in Table 2. 3. The primary changes from the 2009 Guide are identified and listed in Table 3. The effective date of the indicated Rule Changes is 1 January 2013@ unless specifically indicated otherwise. 4. The effective date of each technical change since 1993 is shown in parenthesis at the end of the subsection/paragraph titles within the text of each Part. Unless a particular date and month are shown@ 5. Until the next edition of the Rules for Building and Classing Floating Production Installations is published@ Notices and/or Corrigenda@ as necessary@ will be published on the ABS website ?C www. eagle.org ?C only@ and will be available free for downloading. It is not intended to publish hard copies of future Notices and/or Corrigenda to existing Rules or Guides. The consolidated edition of the Rules for Building and Classing Floating Production Installations@ which includes Notices and/or Corrigenda using different colors for easy recognition@ will be published on the ABS website only when Notices and/or Corrigenda are issued. 6. The listing of CLASSIFICATION SYMBOLS AND NOTATIONS is available from the ABS website www.eagle.org for download."