§ 29 Passive fire protection
Where passive fire protection is used, this shall be designed such that it provides relevant structures and equipment with sufficient fire resistance as regards load/action capacity, integrity and insulation properties.
When designing passive fire protection, the cooling effect from fire-fighting equipment shall not be considered.
Section last changed: 01 January 2015
For determination of fire loads/actions according to the first subsection, see Section 11.
Adequate fire resistance as mentioned in the first subsection, should be determined in relation to recognised standards or calculation models. When stipulating fire resistance for load-bearing structures, varying material utilisation can be taken into account.
To determine the fire resistance of a structure, the test methods in standards ISO 834, ISO 3008, ISO 3009 and NT Fire 021 should be used. To determine the ability of passive fire protection materials to withstand jet fires, the ISO 22899-1 standard Part 1 General requirements should be used.
In order to fulfil the requirements for loadbearing properties, integrity and insulation properties as mentioned in the first subsection, the NORSOK S-001 standard Chapter 20 should be used, with the following addition: for gas and liquid-filled vessels and pipe sections, the passive fire protection should be sufficient to prevent rupture before depressurisation is carried out.