Pt.1 Ch.1 General Regulations
Main changes coming into force 1 January 2008
The booklet has been completely revised. Among other changes, the tables showing the various class notations in previous Sec.2 have been moved to the new booklet Pt.1 Ch.2 “Class Notations”.
Pt.1 Ch.2 Class Notations
New booklet coming into force 1 January 2008
Pt.3 Ch.1 Hull Structural Design, Ships with Length 100 metres and above
Main changes coming into force 1 July 2008
Sec.3 Design Principles
The definition of stiffener span has been updated in line with the span length definition in the IACS Common Tanker Rules (C100, Fig.7).
The end bracket of stiffeners has been adjusted to include the corrosion addition tk (C200).
Sec.7 Side Structures
The requirements for end bracket are sufficiently covered by updated version of Sec.3 C200. Hence item E209 has been deleted.
The requirement for tripping bracket has been removed (previous items E101 and E208) and replaced by an expression for the effective flange that is related to tripping supports arranged.
The requirement for s/l ratio for cylindrical and conical bow regions in E205 has been replaced with new item E104.
The correction for web angles less than 75 degrees (E206) has been removed and the similar correction introduced in Sec.3 C1000. A table with characteristic cross-sectional data of DIN and JIS bulb profiles has been included, under Sec.3 C1000.
The reduction of the span length by half the frame spacing in item E206 has been removed.
A procedure for the buckling check of the girder web at support has been introduced in new item E111, while the minimum web thickness requirement for the girder webs at supports has been deleted.
In items E108 and E112, specific end connection area requirements have been introduced for shell stiffeners and for stringers and web frames supporting shell stiffeners.
In new item E113, the design impact pressure to be used for the direct calculation of girder structures has been changed from 0.5 to 0.375 psl.
Sec.15 Special Requirements - Additional Class
General
DNV has tentatively introduced a new optional class notation PLUS.
This notation is intended to replace the optional PLUS-1 and PLUS-2 notations. For the time being the PLUS-1 and PLUS-2 notations will be retained, while testing out the PLUS notation. The new optional class notation PLUS will be offered as tentative rules and is issued in a separate rule booklet that can be obtained on request.
Sub-section and E have been substantially changed in order to:
adjust to new CSR requirements
make the additional notations form a whole
transfer detailed guidance to new Class Notes for CSA (No.34.1) analyses.
Based on the amended SOLAS Chapter II-1, Part A-1, Regulation 3-2, and the IMO Resolution MSC.215(82): Performance Standard for Protective Coatings for Dedicated Seawater Ballast Tanks in All Types of Ships and Double-Side Skin Spaces of Bulk Carriers (IMO PSPC), a market request for visualisation of compliance with this new standard (IMO PSPC) has been made. To meet this need, a new sub-section F has been introduced covering a new class notation series: COAT-PSPC(X).
The new COAT-PSPC(X) class notation series will come in addition to the existing COAT-1 and COAT-2 notations. The relevant sub-section D has been amended accordingly. It is, however, intended to gradually phase out the latter two notations as new IMO PSPCs are developed, e.g. notably for void spaces, and for cargo/crude oil tanks.
Sec.16 Fatigue Control
This section has been changed in order to adjust to changes in Sec.15 and in order to transfer detailed guidance to Class Notes.
Pt.3 Ch.2 Hull Structural Design, Ships with Length less than 100 metres
Main changes coming into force 1 July 2008
Sec.3 Design Principles
The definition of stiffener span has been updated in line with the span length definition in the IACS Common Tanker Rules (C100, Fig.5).
The end bracket of stiffeners has been adjusted to include the corrosion addition tk (C200).
Pt.4 Ch.1 Machinery Systems, General
Significant editorial changes coming into force with immediate effect
Under Sec.3, in item A410, the requirement for a separate room has been deleted and replaced by requirements related to pressure/ power, location conditions, and requirement for shielding.
Item A411 and item A412 have been deleted (covering the requirement for a separate purifier room). New item A411 has been amended to include an opening for waiving the arrangement of the separate purifier room, when impracticable.
Pt.4 Ch.2 Rotating Machinery, General
Significant changes coming into force 1 January 2008
In order to clarify the NDT requirements, the following changes have been adopted:
Improved documented procedures and requirements in the form of an approved NDT specification.
NDT requirements in the machinery rules are presented in a more unified manner, and a default level of requirements (referring to ISO standards and/or IACS Guidelines) is given.
NDT requirements in the machinery rules are harmonised with other NDT requirements in Pt.2 and Classification Notes 7.
Pt.4 Ch.3 Rotating Machinery, Drivers
Significant changes coming into force 1 January 2008
Reference is made to the comments concerning NDT shown under Pt.4 Ch.2 above.
Under Sec.1, a new item B302 has been inserted to the effect that crankcase explosion relief valves shall be type tested.
Pt.4 Ch.4 Rotating Machinery, Power Transmission
Significant changes coming into force 1 January 2008
Reference is made to the comments concerning NDT shown under Pt.4 Ch.2 above.
Under Sec.1, item B502 has been amended so that the criteria referred to also apply to propeller connections.
Pt.4 Ch.5 Rotating Machinery, Driven Units
Significant changes coming into force 1 January 2008
Reference is made to the comments concerning NDT shown under Pt.4 Ch.2 above.
Pt.4 Ch.6 Piping Systems
Significant editorial changes coming into force with immediate effect
Under Sec.6, a new footnote 7) concerning slip type joints has been added to Table E3 in order to align with IACS UR P2.4.7, Rev. 7.
Pt.4 Ch.8 Electrical Installations
Main changes coming into force 1 July 2008
Sec.2 System Design
In item D102 b) "an independent" has been changed to "its own dedicated".
In item D102 c) recharging time/capacity has been changed to "80% capacity within 10 hours" to be in line with IEC 60092-305 Amendm. 1.
In item D102 d) the text has been clarified.
In item D103 the SOLAS reference has been deleted. "Ventilation fails" has been deleted and replaced by reference, as the requirement for ventilation is covered by I400.
Pt.4 Ch.9 Control and Monitoring Systems
Main changes coming into force 1 July 2008
General
The requirements for interdependency between alarm, control and safety functions have been clarified.
Requirements for user interface were made applicable only when referred to by the ICS notation. As the ICS notation is withdrawn, the user interface requirements in Sec.6 have been reduced to a level that is presumed to be feasible to verify, and the requirements are made mandatory. Further, the separate paragraphs related to user interface in Sec.4 have been moved to Sec.6 and aligned with the revised user interface requirements.
The requirements for control system networks and network components have been strengthened, and a separate set of rules for wireless communication has been added.
A list of all systems that are subject to certification has been added as a Guidance note in the relevant paragraph.
The documentation requirement for FMEA has been changed from “Information” to “Approval”.
The general requirement related to emergency/back-up functions has been strengthened.
Pt.5 Ch.1 Ships for Navigation in Ice
Main changes coming into force 1 January 2008
Sec.6 Winterization
This section has been completely revised as follows:
A new notation WINTERIZED BASIC has been introduced. The documentation requirements and other requirements from the class notation DEICE have been copied to this new notation, except for ice stability loads which, however, is connected to the more severe notations.
The name of the WINTERIZED (..) notation has been changed to WINTERIZED COLD (.., ..) to make it more clear what gives the more and less stringent requirements compared to the new basic notation. Then the Winterized notations will have the same family-name, and the following distinctions: BASIC, COLD, ARCTIC.
The temperature definition in the Winterization notations has been modified to introduce one temperature for material selection, and one temperature for extreme temperatures, i.e. WINTERIZED COLD (t1, t2), where:
t1 = material design temp. °C
t2 = extreme design temp. °C
Same for WINTERIZED ARCTIC (.. , ..). Criteria for the rule use of these temperatures have been improved.Requirement for testing at extreme design temperature of some of the more important equipment has been introduced.
In addition to the above stated main changes, a number of clarifications/corrections have been made in the existing class notations rule text as follows:
For the WINTERIZED COLD (t1, t2) notation:
deck heating for forecastle deck has been deleted, and only the part of the superstructure used as walkways is required heated
an alternative to always arrange heating in ballast tanks and fresh water tanks is to calculate that the tanks cannot freeze
lifeboat arrangements, anchor windlasses and emergency towing arrangements, as well as cargo manifold arrangements have been clarified
spaces that need heating have been clarified through a guidance note
emergency generator room and a requirement for the ability to start up after a 30 minute black-out has been introduced
requirement for remotely operated searchlight has been introduced
materials and equipment for windlass and mooring winches have been clarified.
For the WINTERIZED ARCTIC (t1, t2) notation:
the requirement for RPS notation has been replaced with requirement for 2 power generating machinery rooms, and its auxiliary equipment
requirements for helicopter landing facility and ice surveillance radar have been introduced.
The periodical survey regulations have been updated in accordance with the above.
Main changes coming into force 1 July 2008
Sec.3 Ice Strengthening for the Northern Baltic
The heading of J has been changed to “Propulsion Machinery”.
A new sub-section element J500 has been introduced, covering thrusters.
A new sub-section element K100 has been added, which is the previous J500.
Sec.8 IACS Unified Requirements for Polar Ships (Tentative Rules)
This section is new and covers IACS Unified Requirements for Polar Class Ships (UR I1, I2 and I3). The requirements shall be considered as tentative rules pending the completion of the IACS requirements. The requirements for Polar Ships will in general be the same for all IACS class societies. But because the current UR I1 through UR I3 are incomplete, or lacking sufficiently detailed requirements, some variations based on class practice may occur. The current Arctic Ice Rules (Sec.4) will be maintained as an alternative until the unified IACS requirements have been found to be complete.
Pt.5 Ch.2 Passenger and Dry Cargo Ships
Significant changes coming into force 1 January 2008
Under Sec.2, a new item B603 has been inserted to allow special consideration of thickness of glass doors and walls located in protected areas at sides and aft ends, at specified distance above S.W.L.
Pt.5 Ch.5 Liquefied Gas Carriers
Main changes coming into force 1 January 2008
Sec.2 Materials and Hull Strength
Table E1 has been modified to align with current material requirements.
Sec.5 Scantlings and Testing of Cargo Tanks
The last row of Table M1 has been modified to clarify the NDT of the second barrier. The table has been aligned with the ICG extent of testing, otherwise reference has been made to Pt.2 Ch.3 Sec.7.
Sec.6 Piping Systems in Cargo Area
Item H301 has been amended by increasing the diameter, when DNV product certificate is required for valves, from 75 mm to 100 mm.
Sec.14 Test after Installation
A new sub-section element A200 “Secondary Barrier testing requirements” has been added to align with IACS UI GC 12.
Main changes coming into force 1 July 2008
Sec.1 General Requirements
In new item A203, the class notations for regasification (REGAS-1 and REGAS-2) have been added
In new item A204, the requirements covering the class notation STL concerning submerged turret loading for gas carriers have been added.
Sec.16 Gas Operated Propulsion Machinery
In item D101, the class notation GAS FUELLED has been made mandatory for gas carriers with gas fuelled engine installations, other than steam driven LNG carriers.
Sec.18 Inert Gas Plants
In item A201, cross references to Pt.5 Ch.3 have been clarified. Further, a Guidance note with reference to relevant IACS unified requirements UI F20 has been inserted.
App.A List of Cargoes (Tanker for Liquefied Gas)
Carbon Dioxide and Dimethyl Ether have been added to the list of cargoes.
Pt.5 Ch.15 Compressed Natural Gas Carriers
Main changes coming into force 1 July 2008
Sec.3 Damage Stability and Ship Arrangements
As an alternative to conventional double side solutions with a minimum requirement for the width of the double side, equivalent double side solutions may be used if they can be documented to provide the same level of safety.
Sec.4 Arrangements and Environmental Control in Hold Spaces
Item A202 has been added, covering composite cargo tanks.
Sec.5 Scantling and Testing of Cargo Tanks
In item C101, requirements for dimensioning end-caps of cargo tank cylinders have been specified.
Pt.6 Ch.5 Integrated Computer Systems (ICS)
The rule chapter has been removed as of January 2008
Pt.6 Ch.7 Dynamic Positioning Systems
Main changes coming into force 1 July 2008
General
The following amendments have been undertaken:
A new optional qualifier (A) requiring full annual survey scope equal to 5-yearly renewals for class notations DYNPOS-AUTR and DYNPOS-AUTRO has been introduced, i.e.:
full scope including technical condition, functional verification, failure response and FMEA testing
a DP sea trial is to be performed.
Separation requirements concerning pneumatic systems have been introduced for notation DYNPOS-AUTR.
For DYNPOS-AUT, the requirement for two different measuring principles for the position reference systems may (upon special considerations) be waived when considered not practicable during DP-operation.
Pt.6 Ch.8 Nautical Safety
Significant changes coming into force 1 January 2008
In Sec.3, item A101, requirements for work environment as previously given in Pt.4 Ch.9 Sec.6 F has been deleted. The intent of these requirements is covered in Pt.6 Ch.8.
Pt.6 Ch.20 Nautical Safety - Offshore Service Vessels
Significant changes coming into force 1 January 2008
Under Sec.3, an addition has been made to item F207 to the effect that the total arc of blind sectors shall not exceed 20°.
Pt.7 Ch.1 Survey Requirements
Main changes coming into force 1 January 2008
Sec.1 General Requirements
Items A203, A602 and A604 have been amended to align with IACS UR Z7/7.1/7.2/10.1-10.5.
Sec.2 Annual Surveys Extent - Main Class
A new item C306, concerning nitrogen control system for insulation and interbarrier spaces, has been added in order to align with IACS UR Z16 Rev. 2.
Sec.4 Renewal Surveys Extent - Main Class
New items B510 and B511, concerning secondary barrier tests, have been added in order to align with IACS UR Z16 Rev. 2. The subsequent items have been renumbered.
Sec.6 Optional Class Notation Surveys
Sub-section Y “Winterized Vessels” has been updated in respect of the class notations:
WINTERIZED BASIC
WINTERIZED COLD (t1, t2)
WINTERIZED ARCTIC (t1, t2).
Main changes coming into force 1 July 2008
General
In order to align with new and revised IACS Unified Requirements, the following amendments have been made:
Liquefied Gas Tankers: additional survey requirements for ballast tanks (new IACS UR Z7.2).
Ore Carriers: additional survey requirements for wing void spaces (amended IACS UR Z10.5).
Oil Tankers (single hull): removal of special requirement for annual surveys of ballast tanks adjacent to cargo tanks with any means for heating (amended IACS UR Z10.1).
Thickness measurements whenever close-up examination is required: removal of mandatory DNV requirement (alignment with other IACS members).
Survey requirement for movable car decks (MCDK): revised with emphasize on common designs.
Examination at annual surveys of suspect areas: including thickness measurements of areas with substantial corrosion not being applicable to cargo tanks of oil and chemical tankers.
Application of semi-hard coatings: is not accepted as an alternative to annual surveys of ballast tanks (amended IACS Guideline No.54, implementation from 1. January 2010).
Sec.2 Annual Survey Extent - Main Class
Item C107 has been amended to the effect that annual survey of control and monitoring systems has been extended to improve verification of correct change-handling.
Sec.5 Miscellaneous Main Class Surveys
Item A501 concerning the class notation BIS has been amended.
Sub-section D “Survey of Geared Thrusters for Main Propulsion and DYNPOS” has been substantially revised.
A new sub-section E “Survey of Podded Thrusters for Main Propulsion and DYNPOS” has been introduced, including requirement for annual survey.
Sec.6 Optional Class Notation Surveys
Sub-section L “Dynamic Positioning Systems and Dynamic Positioning Systems - Class Entry” has been amended to cover the following:
The survey scheme has been changed from a 2.5 yearly comprehensive survey to annual surveys and a 5 yearly renewal survey, consisting of:
Annual survey:
technical condition and functional verification, no failure response or redundancy testing
performed during normal operations, with testing implying risk to operations avoided
can be combined with main class annual.
5 yearly renewals:
full scope, including technical condition, functional verification, failure response and FMEA testing
a DP sea trial is to be performed.
Pt.7 Ch.2 Retroactive Requirements
Significant changes coming into force 1 January 2008
In order to align with IACS UR S31, Rev. 4, Sec.1 has been modified involving:
Thickness criteria in item F203.
Bending check criteria for frames and brackets in item F207.
Thickness measurements, steel renewal, sand blasting and coating in item F208.
Renewal of damaged frames in new item F213.
Additional text has been added concerning homogeneous and non-homogeneous cargoes in item F302.
Pt.8 Ch.1 Common Structural Rules for Double Hull Oil Tankers with length 150 metres and above
Changes in the rules
General
The present edition of the rules includes additions and amendments decided by the Board as of December 2007, and supersedes the January 2007 edition of the same chapter, including later amendments.
Corrigenda 1 (April 2006), Corrigenda 2 (July 2006) and Corrigenda 3 (November 2007) are incorporated.
The incorporated corrigenda and possible later corrigenda may be obtained from (http://www.iacs.org.uk/publications/).
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 2007, and supersedes the January 2006 edition of the same chapter, including later amendments.
Corrigenda 1 (May 2006), Corrigenda 2 (January 2007), Corrigenda 3 (July 2007) and Corrigenda 4 (September 2007) are incorporated.
The incorporated corrigenda and possible later corrigenda may be obtained from (http://www.iacs.org.uk/publications/).
Main changes coming into force 1 April 2008
Chapter 5 App.A Hull Girder Ultimate Strength
In items 2.2.4, 2.2.5, 2.2.7 and 2.2.8 the requirements for critical stress have been amended.