Pt.1 Ch.1 General Regulations
Main changes coming into force 1 January 2009
· Sec.1 Classification Principles
— A new item B502, including a Guidance note, has been inserted covering convention vessels carrying more than 60 persons. The subsequent items have been renumbered.
· Sec.3 Retention of Class
— Item A203 has been reworded to allow for evaluation of reported deficiency before deciding whether attendance onboard is necessary.
— A new item D206 has been introduced for ships having been detained as a result of port state inspections.
Pt.1 Ch.2 Class Notations
Main changes coming into force 1 July 2009
· Sec.1 Class Notations
— In Table C2, a newEL-2notation has been introduced based on the previousELnotation so that:
- the notation is applicable toOre Carriers, in addition toBulk Carriers
- the design and operational requirements accommodate loading each cargo hold in one pass.
TheELnotation has been renamed toEL-1and has been clarified in important areas such as definition of the "average loading rates". Its scope has also been expanded to coverOre Carriers, in addition toBulk Carriers.
Significant editorial changes entering into force with immediate effect
· Sec.1 Class Notations
— In Table C1, three new rows have been inserted after Barge, covering the following class notations:Pipe Laying Barge,Cable Laying BargeandPipe Laying Vessel, respectively.
Pt.3 Ch.1 Hull Structural Design, Ships with Length 100 metres and above
Main changes coming into force 1 July 2009
· Sec.2 Materials
— The material requirements have been amended in line with UR S6 rev.5, and the changes are mainly related to selection of material grade for outer shell.
— B204 has been clarified: as-built thickness shall be used as reference for material selection.
- New Tables B2 to B6 have been inserted.
· Sec.3 Design Principles
— A400: The required position of collision bulkhead for passenger vessels has become the same as for cargo vessels.
— A901: Minimum bow height requirements have been updated.
· Sec.4 Design Loads
— B401: New default GM values have been defined for container carriers.
— B602: The application of combined vertical acceleration has been clarified.
· Sec.5 Longitudinal Strength
— E203: Previous E203 has been found to deviate from the requirement in IACS CSR and UR S5 and has been deleted.
· Sec.6 Bottom Structures
— A501 and A503: The requirements for double bottom arrangements have been updated.
— C603, C703, and C802: The minimum thickness requirements for stiffener webs, including minimum aspect ratio for flanged profiles, have been modified.
— D101: The requirement for double bottom arrangements has been updated
— H201: The last paragraph has been removed, while stern slamming requirements have been moved to Sec.7 E200, modified to require that the stern always to be checked with respect to the requirements in H213 and H214.
— H203: The definition of design forward draught for bottom slamming calculations has been modified.
— H207: Effective load length for bottom slamming loads has been corrected from (l - s) to (l - 0.5s).
— H208: The connection area formula has been clarified.
— H210: A new paragraph has been introduced to address slamming evaluation of primary members.
— H211: Introduce new requirements for stern slamming, and application has been specified in H201.
· Sec.7 Side Structures
— C302: Same change as Sec.6 C603 (see above).
— E106: Bow impact area has been extended aft for vessel with significant bow flare aft of 0.15 L.
— E110: Shear area formula has been corrected.
— E111: Application of buckling requirement has been clarified.
— E200: Requirements for stern slamming has been introduced.
· Sec.8 Deck Structures
— A406: The requirement for tapering has been modified.
— C303: Same change as Sec.6 C603 (see above). In addition, the required minimum thickness for accommodation decks has been clarified as a fixed value 5.0 mm, not dependent on vessel length.
· Sec.9 Bulkhead Structures
— C202: Same change as Sec.6 C603 (see above).
Significant editorial changes taking effect immediately
· Sec.1 General Requirements
— In item D201 the documentation requirements for theBISnotation have been clarified.
· Sec.7 Side Structures
— In Table B1 the formula for p5 has been corrected.
Pt.3 Ch.2 Hull Structural Design, Ships with Length less than 100 metres
Main changes coming into force 1 July 2009
· Sec.2 Materials
— The material requirements have been amended in line with UR S6 rev.5 and the changes are mainly related to selection of material grade for outer shell.
— B204 has been clarified: as-built thickness shall be used as reference for material selection.
- Table B2 has been revised and new Table B3 has been inserted.
· Sec.3 Design Principles
— A400: The required position of collision bulkhead for passenger vessels has become the same as for cargo vessels. The maximum requirement for distance between collision bulkhead and F.P. has been changed.
— A901: The minimum bow height requirements have been updated.
· Sec.5 Bottom Structures
— A401 and A403: The requirements for double bottom arrangements have been updated.
— C503, C602, and C803: The minimum thickness requirements for stiffener webs including minimum aspect ratio for flanged profiles have been modified.
— D101: The requirements for double bottom arrangements have been updated.
— G301: The definition of design forward draught for bottom slamming calculations has been modified.
· Sec.6 Side Structures
— C302: Same as Sec.5 C503 (see above).
· Sec.7 Deck Structures
— A304: The requirement for tapering has been modified.
— C302: Same as Sec.5 C503 (see above).
· Sec.8 Bulkhead Structures
— C202: Same as Sec.5 C503 (see above).
Pt.3 Ch.3 Hull Equipment and Safety
Main changes coming into force 1 July 2009
· Sec.6 Openings and Closing Appliances
— New items A305 and A306 have been introduced to cover documentation requirements for retractable bottom equipment and box coolers.
— New sub-sections O and P have been included to cover requirements for retractable bottom equipment and box coolers.
· Sec.9 Stability
— This section has been updated in line with changes introduced in Resolution MSC.194(80).
— The references in Table D1 have been upgraded.
— Sub-section F has been updated with reference to IACS UI SC155 "Lightweight check in lieu of inclining test".
Pt.4 Ch.3 Rotating Machinery, Drivers
Main changes coming into force 1 July 2009
· Sec.1 Diesel Engines
— Monitoring of turbocharger lubrication oil outlet temperature has been brought in line with revised IACS UR M35 and the reported practices of other IACS members.
— Inconsistency and redundancies in the rule text concerning the design of turbochargers have been removed.
— Alignment with/incorporating IACS UR M66 for "testing of crankcase safety valves" has been introduced.
— Other editorial improvements and corrections of printing errors have been made.
Pt.4 Ch.4 Rotating Machinery, Power Transmission
Significant editorial changes adopted January 2009 and taking effect immediately
· Sec.2 Gear Transmissions
— List item a), sub-item 1) in C206 has been extensively amended in order to introduce an alternative for gear manufacturers who still want to apply small standard test coupons without performing any correlation testing.
Pt.4 Ch.7 Pressure Vessels
Main changes coming into force 1 July 2009
· General
— The previous title of this booklet “Boilers, Pressure Vessels, Thermal-Oil Installations and Incinerators” has been replaced by “Pressure Vessels”.
· Sec.1 General Requirements
— Sub-section B: The definition of a boiler has been adjusted also to include the alternative electric heating.
— Table B1: The references to austenitic stainless steels have been removed, and "Plate heat exchangers" under "Other pressure vessels"/ Class III has been included.
— Sub-section element C400 “Incinerators” has been deleted.
— Previous sub-section D has been replaced by new sub-section D and sub-section E, which are a completely update.
· Sec.2 Materials
— Sub-section elements A100 and A200 have been updated with regard to plate heat exchangers.
— Items A206 and 207 have been corrected to align with Pt.2 Ch.2.
— Sub-section element A300 “Valves and fittings” has been removed, being covered by Ch.6.
· Sec.3 Arrangement
— Sub-section C “Incinerators” has been deleted.
· Sec.4 General Design Requirements
— In item D305, the factor 0.75 has been changed to 0.6.
— In item F101, a reference to Table F1 has been added regarding the minimum wall thickness requirements. Item F104 has been deleted.
· Sec.5 Particular Design Requirements for Boilers
— In item D205 and item D603, the factor 0.75 has been changed to 0.6.
· Sec.6 Mounting and Fittings
— In item B101, the requirement for number of safety valves has been changed to 2, independent of heating surface.
— In item B113, the accumulation test requirements have been revised.
· Sec.7 Instrumentation and Automation
— Sub-section F and Table F1 “Monitoring of oil fired incinerators” have been removed.
· Sec.8 Manufacture, Workmanship and Testing
— Item D603 has been deleted.
Pt.5 Ch.1 Ships for Navigation in Ice
Editorial changes taking effect immediately
· Sec.1 General Requirements
— Table A1 has been amended to include Polar Class.
· Sec.8 IACS Unified Requirements for Polar Ships (Tentative Rules)
— The section has been subjected to a number of typographical -corrections with respect to equations and corresponding subscripts.
Pt.5 Ch.2 Passenger and Dry Cargo Ships
Main changes coming into force 1 July 2009
· Sec.2 Passenger Ships
— The references to SOLAS definitions in A200 have been removed
— Item B102 has been removed as the special references to design requirements in SOLAS are now covered in Pt.3 Ch.1 Sec.3 A400 and Pt.3 Ch.1 Sec.6 A500.
— The references have been updated in general and the requirements for damage stability have been updated in line with SOLAS Ch. II-1 as amended.
· Sec.5 Dry Bulk Cargo Carriers
— A newEL-2(H400) notation has been introduced based on the previousELnotation so that:
- the notation is applicable to Ore Carriers, in addition to Bulk Carriers
- the design and operational requirements accommodate loading each cargo hold in one pass.
— TheELnotation has been renamed toEL-1(H300) and has been clarified in important areas such as definition of the "average loading rates". Its scope has also been expanded to cover Ore Carriers, in addition to Bulk Carriers.
· Sec.6 Container Carriers
1) The still water moments may be based on the envelope curve of all relevant loading conditions. This has been moved from B203 to B201 so it applies to strength evaluation in general, and not limited to longitudinal strength evaluation.
2) The allowable combined stress where vertical and horizontal bending stresses are combined with torsion stresses is increased to 225f1 in the deck and hatch coaming. Longitudinal stresses in the deck caused by torsion are explicitly taken into account in the formulation of still water and wave torsion stresses. The rule minimum still-water torsion is increased to 0.3 LB2.
3) An opening in the rules for applying the design bending moments as function of the draught is introduced. In order to combine the actual stresses arising from the local pressure with the correct global bending moment (sag or hog), alternative methods for calculating the allowable stress for stiffeners in the bottom area is introduced.
4) A minimum side shell thickness for container ships has been adopted as the current formulation results in requirements beyond that of current design practice for modern container ships.
5) A special consideration of minimum centre girder plate thickness for container ships has been introduced similarly to that of other girders.
6) For fatigue evaluation of longitudinals, a requirement for warping stresses to be taken into account in the calculations is introduced.
7) A rule requirement for fatigue evaluation of hatch corners in container ships, which is the current practise, has been introduced.
8) For container ships, the connection and weld area requirement for unsymmetrical profiles is divided into a shear area requirement and a connection area requirement for the stiffener on top.
9) The loading conditions for cargo hold analyses have been revised to better reflect actual operating conditions for container ships.
10) Rule requirements for wave breaker structure and its attachments to the hull according to current practise have been introduced.
· Sec.11 Damage Stability Cargo Ships and Passenger Ships - Class NotationSSC
— The class notationSSChas been deleted and the whole section has been removed because the requirements relevant to the notation have been implemented as mandatory requirements in -SOLAS.
Pt.5 Ch.3 Oil Carriers
Main changes coming into force 1 July 2009
· Sec.15 Single Point Moorings
— A documentation requirement has been introduced, stating that the manufacturer shall document the capacity of winches and strength of pedestal roller (A303).
— The safety factor against yield criteria has been increased from 1.5 to 2.0 (C103).
— Table C1 has been altered with modified requirements for
DW >100 000 tonnes.
— The load angles have been increased (C204).
— The requirement for product certificate and material has been made applicable only to equipment loaded during single point mooring (SPM).
— The foundations for winches or capstans, and pedestal roller have been covered by updated (Pt.3 Ch.3 Sec.5).
Significant editorial changes coming into force with immediate effect
· General
— It has been clarified that ships arranged for bow loading, submerged turret loading or single point moorings will be assigned the corresponding class notation:BOW LOADING,STLor SPM. (ref. Sec.1, Sec.14 and Sec.15). I.e. the class notations are mandatory in such cases.
Pt.5 Ch.5 Liquefied Gas Carriers
Significant editorial changes adopted January 2009 taking effect immediately
· Sec.5 Scantlings and Testing of Cargo Tanks
— A new Guidance note has been inserted in C105 regarding methods for strength analysis of hull structures in liquefied gas carriers with membrane tanks (a reference to Classification Note 31.9).
Pt.5 Ch.12 Comfort Class
Main changes coming into force 1 July 2009
· Sec.3 Indoor Climate
— Outdoor conditions for which the notation is valid shall be stated together with the crn rating number.
— Minimum temperature control span has been given as a function of outside temperature instead of the separate “summer”/”winter” constellation.
— Existing criteria for CO2 concentration have been deleted, instead replaced as a function of fresh air supply with criteria for such supply.
— Criteria for relative humidity and fresh air supply quantity have been somewhat adjusted based on technical discussions with HVAC suppliers.
— Necessary spare parts for installed HVAC systems have been defined.
— The definition of temperature used has been changed, i.e. "operating temperature" is no longer used due to its complex definition.
Pt.5 Ch.14 Naval and Naval Support Vessels
Significant editorial changes adopted January 2009Taking effect immediately
· Sec.12 Safe Evacuation of Personnel
— Item J203 has been amended so that the reference to IMO res. A.656(16) has been replaced by the LSA Code as amended.
Pt.6 Ch.1 Miscellaneous Notations
Main changes coming into force 1 July 2009
· General
— The notation (CAA-N) has been included (evaluation of helicopter deck for compliance with the Norwegian Civil Aviation Authorities helicopter operation regulations BSL D 5-1 governing Norwegian Continental Shelf operation).
— Requirements taking into account "green sea" on pillars, supporting helicopter decks located in the fore ship, have been added under Sec.2 B500.
— Safety requirements based on “CAP 437 - offshore helicopter landing areas - guidance on standards, January 2005 edition” (UK Civil Aviation Authorities Publications), and fire safety requirements for helicopter deck installations as required by -SOLAS, have been incorporated.
— Any references to naval standards have been removed.
Pt.6 Ch.3 Periodically Unattended Machinery Space
Main changes adopted January 2009 coming into force 1 July 2009
· Sec.3 Class NotationE0
— Table A1 has been updated with a new row covering Turbocharger lubrication oil outlet temperature to align with the change to Table E1 in Pt.4 Ch.3 Sec.1.
Pt.7 Ch.1 Survey Requirements
Main changes coming into force 1 July 2009
· General
The requirements regarding periodical boiler surveys and occasional damage surveys of boiler installations have been revised (involving parts of Sec.1, Sec.2 and Sec.5) as follows:
— Clear definitions have been adopted for boiler types and type dependent construction details.
— Survey scope for periodical boiler survey has been amended to prevent incorrect interpretation of requirements addressing testing of safety functions and automation.
— Surveying of bursting discs introduced to fully flooded shell type exhaust gas boilers by IACS UR P6 has now been included.
— Survey scheduling for thermal oil installations has been updated to ensure conformity with boiler surveys.
— Definition of “significant repairs” to machinery has been amended to include boiler repairs.
— Definition of temporary versus permanent repairs to boiler tubes has been laid down.
— Procedures for replacement of boiler tubes and repairs to cracks and fractures have been included.
— Replacement of boiler armatures/steam valves has been addressed.
— Surveying of thermal oil plants has been addressed in detail.
· Sec.7 Optional Class Notation Surveys - Continued
— Sub-section element E300 has been amended to cover the renaming of the class notationELtoEL-1and the introduction of the new class notationEL-2.
Significant editorial changes coming into force with immediate effect
· Sec.1 General Requirements
— A new row has been added to Table A2 to cover class notationFC SafetyorFC Power.
· Sec.2 Annual Survey Extent – Main Class
— In order to align with the latest revision of IACS Z10.5, the following bullet point has been added to B306:
— examination of all piping and penetrations in cargo holds, including overboard piping.
· Sec.5 Miscellaneous Main Class Surveys
— In order to align with the latest revision of IACS UR Z3, a new item A106 has been added opening up for exemption of bottom survey requirements for vessels owned or chartered by governments, which are utilized in support of military operations or service used in military operations.
— The first bullet point in A502 has been changed to cover liquefied gas tankers (to align with Sec.4 B503).
· Sec.6 Optional Class Notation Surveys
— In item Q103, the Guidance note on propeller shaft withdrawal atTMONinitial survey has been amended.
Pt.8 Ch.2 Common Structural Rules for Bulk Carriers with length 90 metres and above
· General
The present edition of the rules includes additions and amendments decided by the Board as of December 2008, and supersedes the January 2008 edition of the same chapter, including later amendments.
The present edition of the Rules includes additions and amendments decided by the Board since the previous Rules issue, i.e. the previous CD-ROM issue.
The following Rule Change Notices have been incorporated:
— Rule Change Notice 1 (Coming into force 1 April 2008)
— Rule Change Notice 2 (Coming into force 1 July 2008)
— Rule Change Notice 3 (Coming into force 1 January 2009).
The following Corrigenda have been incorporated:
— Corrigenda 1 (May 2006)
— Corrigenda 2 (January 2007)
— Corrigenda 3 (July 2007)
— Corrigenda 4 (September 2007)
— Corrigenda 5 (May 2008).
The incorporated Rule Change Notices and corrigenda may be -obtained from (http://www.iacs.org.uk/publications/).
Main changes adopted January 2009 (Rule Change Notice 3)Coming into force 1 January 2009
· Chapter 8 Sec.2 Fatigue Strength Assessment
— Items 2.3.1 and 2.3.2 have been modified.
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