Introduction

This recommended practice deals with design to maintain the load-bearing function of the structures during accidental events. The overall goal of the design against accidental loads is to achieve a system where the main safety functions of the installation are not impaired.

The recommended practice has been developed for general world-wide application. Governmental legislation may include requirements in excess of the provisions of this recommended practice depending on type, location and intended service of the unit/installation.

The design accidental loads and associated performance criteria are given in DNVGL-OS-A101. The accidental loads in this standard are prescriptive loads. This recommended practice may also be used in cases where the design accidental loads are determined by a formal safety assessment (see DNVGL-OS-A101) or quantified risk assessment (QRA).

The following main subjects are covered:

— design philosophy

— ship collisions

— dropped objects

— fire

— explosions.