1 Scope
This document provides a uniform reference for tertiary structure items when a tertiary
structure is designed and constructed in offshore oil and gas projects. This document
covers topside systems for fixed or floating offshore projects not covered by class
requirements. This document can be applicable for hull systems and onshore projects
when there is consent from relevant stakeholders. This document does not provide class
rules from classification societies.
This document provides requirements on dimensions of the items but does not include
requirements on clearances with other structures.
The following tertiary outfitting designs for equipment items are covered in this document:
-
—
handrails;
-
— safety gate;
-
— stairs;
-
—
spiral stairs;
-
— vertical ladder;
-
— grating;
-
— access hole (manhole);
-
— connection method.