ABS 82 NOTICE 1-2017 RULES FOR BUILDING AND CLASSING FLOATING PRODUCTION INSTALLATIONS 2017.pdf

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1、 RULES FOR BUILDING AND CLASSING FLOATING PRODUCTION INSTALLATIONS 2017 NOTICE NO. 1 July 2017 The following Rule Changes were approved by the ABS Rules Committee on 30 May 2017 and become EFFECTIVE AS OF 1 JULY 2017. (See http:/www.eagle.org for the consolidated version of the Rules for Building an

2、d Classing Floating Production Installations 2017, with all Notices and Corrigenda incorporated.) Notes - The date in the parentheses means the date that the Rule becomes effective for new construction based on the contract date for construction. (See 1-1-4/3.3 of the ABS Rules for Conditions of Cla

3、ssification Offshore Units and Structures (Part 1).) PART 1 CONDITIONS OF CLASSIFICATION CHAPTER 1 SCOPE AND CONDITIONS OF CLASSIFICATION SECTION 2 SYSTEM CLASSIFICATION, SYMBOLS, AND NOTATIONS 5 Additional Class Notations 5.9 Strength Criteria for Ship-Type Installations (1 July 2012) (Revise Subpa

4、ragraph 1-1-2/5.9.3, as follows:) 5.9.3 Relocation of FPI (1 July 2017) As site specific units, FPIs are designed and classed taking into consideration the location where they will operate and the intended period of operation. When the FPI is relocated to a new site, either within the same field or

5、in a different operating area, or when the intended period of operation is extended, the strength of the unit is to be reassessed to satisfy that the unit will remain in compliance with applicable requirements as described below. 5.9.3(a) Relocation within the Same Field. When an FPI is relocated wi

6、thin the same field or the same operating area, the environmental conditions are expected to remain identical to those considered during the original classification process for the current site. If the environmental conditions for the field or operating area have been revised since the original appr

7、oval due to new environmental data or changing environmental conditions (e.g., new environmental data in the Gulf of Mexico after hurricanes Rita and Katrina), the Coastal State may require the use of new environmental conditions for the relocation, in which case the same requirements as relocation

8、to a different operating area will apply. The expected operating life in the new location may be within the originally considered design life or otherwise, it may extend beyond the original design life period. In the latter case, in addition to the requirements for relocation, the requirements for l

9、ife extension will apply. ABSRULES FOR BUILDING AND CLASSING FLOATING PRODUCTION INSTALLATIONS .2017 1 Notice No. 1 July 2017 It is expected that relocation within the same field will require at least a new position mooring and anchoring system for the new site and probably, modifications to the pro

10、cess facilities. For the relocation within the same field, without exceeding the original design life of the unit, the following actions will to be required: Design review and surveys related to the new position mooring system and anchoring. Design review and surveys related to the modifications to

11、the process facilities, if applicable. Design review and surveys related to any other modifications affecting class items. Drydocking survey, including gauging, with steel renewals as necessary to bring the unit to a satisfactory condition to complete the remaining design life at the specific site.

12、Structural strength analysis and fatigue life re-evaluation for the hull structure, turret, module structures, etc., will not to be required, unless structural modifications are performed or current environmental conditions are harsher than the environmental conditions considered in the original des

13、ign. For structures, systems or equipment not modified and maintained per original design, design review is to be based on the design codes used in the original design with current environmental data. For added or modified structures, systems or equipment, design review is to be based on the design

14、codes at the time of the contract for the relocation with current environmental data. Surveys are to be based on the current rule requirements, see Part 7 of these Rules. 5.9.3(b) Relocation to a Different Operating Area. When an FPI is relocated to an operating area where the environmental conditio

15、ns are different than those at the original site, the structural strength and fatigue life of the unit will need to be reassessed for the new conditions. However, if the new location has milder environmental conditions than the current site, the reassessment may not need to be performed provided tha

16、t the unit is kept under the same structural condition as in the original site and the design fatigue life of the unit is not extended. Relocation to a different operating area will require a new position mooring and anchoring system for the new site and most probably, extensive modifications to the

17、 process facilities. For the relocation to a different operating area, the following actions will be required: Structural strength analysis and fatigue life re-evaluation for the hull structure, turret, module structures, etc. (except as noted above). Design review and surveys related to the new pos

18、ition mooring system and anchoring. Design review and surveys related to the modifications to the process facilities. Design review and surveys related to any other modifications affecting class items. Drydocking survey, including gauging, with steel renewals as necessary to bring the unit to a sati

19、sfactory condition to complete the remaining design life at the specific site. For structures, systems or equipment not modified and maintained per original design, design review is to be based on the design codes used in the original design with current environmental data. For added or modified str

20、uctures, systems or equipment, design review is to be based on the design codes at the time of the contract for the relocation with current environmental data. Surveys are to be based on the current rule requirements, see Part 7 of these Rules. 2 ABSRULES FOR BUILDING AND CLASSING FLOATING PRODUCTIO

21、N INSTALLATIONS .2017 Notice No. 1 July 2017 5.11 Design Life and Design Fatigue Life (1 July 2012) (Revise Subparagraph 1-1-2/5.11.5, as follows:) 5.11.5 Life Extension of FPI on the Same Site (1 July 2017) When an FPI exceeds the design fatigue life specified in the FL (number of years), Year or R

22、FL (number of years), Year notation for which it was classed, an evaluation is to be made and appropriate actions are to be taken to extend the fatigue life up to the new operating life of the unit under the site-specific environmental conditions. For conversions, the design fatigue life will depend

23、 on the minimum remaining fatigue life expected from the time of the conversion. For conversions before October 2001, the remaining fatigue life is only documented in the original calculations submitted at the time of the conversion. For conversions on or after October 2001, the remaining fatigue li

24、fe is indicated with the FL notation (before July 2003) or the RFL notation (on or after July 2003). For both original build FPIs and conversions, the remaining fatigue life of the unit may be extended during the operating life of the FPI by renewals or modifications of those structural details with

25、 lower fatigue life. For the life extension of the unit remaining in the same location, the following actions will be required: Verification from the original fatigue analysis that the actual fatigue values of all the structural elements of the unit are still higher than the proposed extended fatigu

26、e life; or New fatigue analysis covering all the structural elements (hull, turret, hull interfaces, position mooring system) in accordance with SFA, FL or RFL requirements, as applicable. Risers (if classed) are also to be analyzed for the extended fatigue life. Identification of structural element

27、s or details with a fatigue life below the new intended design fatigue life of the unit and proposed actions to increase the fatigue life of those elements or details. Design review and surveys of structural modifications proposed as a consequence of the fatigue analysis. Enhanced survey program to

28、monitor those structural elements or details with lower fatigue life which cannot be modified or renewed on site. Special survey, including Underwater Inspection, to determine the structural condition of the unit at the time of the life extension. For structures, systems or equipment not modified an

29、d maintained per original design, the new fatigue analysis and related design review, when necessary, is to be based on the design codes used in the original design with current environmental data. For added or modified structures, systems or equipment, the new fatigue analysis and related design re

30、view are to be based on the design codes at the time of the life extension with current environmental data. Surveys are to be based on the current rule requirements, see Part 7 of these Rules. Once the life extension is approved, the existing SFA, FL or RFL notation with year of maturation is to be

31、updated accordingly. When a fatigue notation is requested, and where none of the above notations was previously assigned to the unit, the most appropriate fatigue notation for the unit is to be assigned. For the first life extension up to 5 years, upon agreement with operator/owner, a new notation L

32、E (number of years) year can be granted instead of RFL or FL without performing new fatigue analysis as required in this section. To be granted the LE Notation, the following conditions are to be satisfied: ABSRULES FOR BUILDING AND CLASSING FLOATING PRODUCTION INSTALLATIONS .2017 3 Notice No. 1 Jul

33、y 2017 Any modifications to the structure have class approval. Critical areas of the original design have been re-examined using NDT techniques and verified to be satisfactory by ABS Surveyor. Additional items to be determined on a case-by-case basis during the life extension process have been resol

34、ved. PART 1 CONDITIONS OF CLASSIFICATION CHAPTER 1 SCOPE AND CONDITIONS OF CLASSIFICATION SECTION 4 SUBMISSION OF PLANS, DATA AND CALCULATIONS 1 Design Plans and Data (1 March 2006) (Add new Item 1-1-4/1xxv), as follows:) xxv) (1 July 2017) Structural critical inspection points (SCIPs) (see 7-2-1/3.

35、27 a) General record keeping procedures for reports and surveys (company policy). b) Notification and report delivery procedures involving ABS. c) Specific record-keeping procedures and report contents for each component category identified under 7-2-3/3.3.2iii) above. d) Record-keeping for dive con

36、ducted during inspections of the underwater hull. e) (1 July 2017) A repair booklet is to be available for the Surveyor to verify. The booklet is to indicate all the repairs carried out including but not limited to, the material replacement due to wastage, steel replacements, repaired fractures, additional reinforcements, substantial corrosion, etc., in the unit structural drawings. Also, the booklet is to indicate any scantling reassessments performed during the repair stage. 8 ABSRULES FOR BUILDING AND CLASSING FLOATING PRODUCTION INSTALLATIONS .2017