Det Norske Veritas - Germanischer Lloyd

DNVGL  OFFSHORE STANDARD FOR DIVING SYSTEMS
 N DNV-OS-E402

Annotation

Application and scope

This standard applies to diving systems for any fixed location. The diving system may thus be located on and operated from a ship, barge, mobile offshore platform, fixed offshore installation or an onshore site (in the latter case e.g. for training and research purposes).

Requirements for the support vessels are included such as the requirements for stability, floatation and positioning ability.

The Standard also applies to transferable diving systems as defined in C.

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 standard primarily applies to diving systems used in the petroleum and natural gas industries.

For application in other industries, special considerations may need to be agreed by the parties to the contract and or involved statutory regulators.

This standard is applicable to various diving systems such as:

a) diving systems with deck decompression chambers and a ladder or basket for deployment of divers

b) for ‘open bell' deployment of divers

c) for ‘closed bell' deployment of divers and ‘bounce-diving techniques