DNV is removing Convention (Statutory requirements) text from the rules.
The most critical safety requirements, focusing on requirements closely connected to the traditional scope of classification, have been retained. The revised rules clearly define what is included in the scope of class and statutory services.
Some previous practices in the rules have also been changed:
Statutory text that has been adopted in the rules will now be written in normal font (non-italics), however a reference corresponding to the statutory regulation will be given.
Adopting statutory requirements by reference alone will not be used.
Some statutory requirements outside the new scope of class, but important to consider in accordance with rules, are referred to in Guidance Notes.
The different sections of the rules have been revised accordingly:
Stability: Intact and damage stability requirements have been retained in the rules, with some amendments to align with current practice.
Fire safety: The scope of the class rules has been extensively reduced, focusing on fire zones, protection of stairways and lift trunks and escape routes.
Lifesaving: Revised class rules focus on mustering of crew and passengers, embarkation and launching of survival craft.
Safety of Navigation: The requirements have been removed.
Radio Communication: The requirements have been removed.
Ships in Operation: In the rules for ships in operation in Pt.7 Ch.1 and Pt.7 Ch.2, only the most critical additional survey requirements for conventional ships remain.
Safety Management: The ISM requirements were not within the scope of class and have been removed.
Operational Requirements: Since the operational requirements are not subject to survey or inspections they have been removed from the rules.
The new rules adopt several regulations found in the International Maritime Conventions. Compliance with the rules does not necessarily ensure that all relevant statutory regulations have been complied with. However, when issuing certificates on behalf of the flag administration, DNV will verify compliance of all relevant statutory requirements.
All rule chapters have been revised and or reprinted as shown in the table below. All chapters have been dated January 2003.
Amendments and corrections shown in Sec.3 of the previous issue of this chapter (July 2002) have been inserted in the current rule chapters as relevant.
Requirements within the scope of classification, previously found in deleted chapters have been moved to related chapters.
Convention text (statutory requirements) has been removed from the rules.
Special Service and Type - Additional Class
Standby Vessels
DNV has received market feedback regarding current requirements for vessels operating in waters less severe than the North Sea.
The rules for standby vessels have been re-arranged. Requirements for the strengthening of the superstructure and deckhouses are noted in a new sub-section for a new Standby Vessel-S class notation. Some minor corrections, deletions and clarifications have been made.
Fuel Treatment and Conditioning System
An additional class notation Fuel has been introduced. The new rules provide a total system approach. The most important changes are:
sizing and efficiency of purifiers
arrangements of fuel bunker tanks to enable bunkering without risk of mixing incompatible fuels
arrangement and sizing of settling tanks to ensure good separation of water and sludge
capacity of fuel heaters
requirements for performance of temperature and viscosity controls.