scope:

The underpinning factors for determining the recommended requirements are to provide sufficient safety for people in combination with cost efficiency in implementing the requirements. This RP provides dimensions of items only. Requirements to clearances with other structures are not included.

Material selection is limited to references with more detailed information to be found in DNVGL RP B201 Recommended international standards for specification of structural steel.

The following tertiary structural items are covered by this RP:

- hand rails

- stairs

- vertical ladder

- grating.

Applicability

This RP covers offshore oil and gas projects involving topsides equipment on any type of production installation, fixed or floating, or drilling unit. The RP should not be applied for systems covered by class rules. This RP was developed based on major international standards to comply with requirements of shelf regulations of the UK, US, Norway and Australia. Overall the requirements recommended in this RP will meet the majority of the specified regulatory requirements. Exemptions where regulatory requirements are not met in this RP are clearly stated.