DNV DNV-DS-E403 PDF

The scope is defined in each section for the various disciplines and may refer to standards that apply to the discipline in general, such as for electrical systems. In these cases this DNV Standard (DS) only contains requirements that are particular to SURFACE diving systems, whereas the generic requirements are given in the referred rules, standard or code. The combined requirements shall then constitute the scope.

Requirements for the support vessels are given in DNV Rules for Classification of Ships Pt.5 Ch.16, such as the requirements for floatation and positioning ability.

Where the Code requires that a particular fitting, material, appliance, apparatus, item or type of equipment should be fitted or carried in a system, or that any particular provision should be made, or any procedure or arrangement complied with, the Administration may allow alternative arrangements in that system, provided that the Administration is satisfied that such alternatives are at least as effective as the requirements of the Code.

(IMO Code of Safety for Diving Systems Chapter 2 Design, Construction and Survey 1.5 Equivalents) The design of arrangements, systems and individual components may alternatively or supplementary to the Standard be based on recognized standards, codes, national regulations and other methods of safety and strength evaluation than specified in the Standard. The basis shall be equivalent to the requirements given in this Standard.

This section bears impact on all other sections.