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Norsk

§ 30 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 capacity, integrity and isolation properties.
When designing passive fire protection, the cooling effect from fire-fighting equipment shall not be considered.
Section last changed: 01 January 2011

As regards stipulation of fire loads as mentioned in the first subsection, see Section 6, litera a.
To determine fire resistance, the test methods in the standards ISO 834, ISO 3008, ISO 3009, NS-EN 13381- parts 4 and 8 should be used. For pool fires, the hydrocarbon curve described in standard NS-EN 1363-2 should be used. To determine the ability of passive fire protection materials to withstand jet fires, the standard ISO 22899-1 Part 1 General requirements should be used. If structures, pipes and equipment can be exposed to fire loads beyond what is covered in the mentioned standards, the ability to withstand this should be documented. In order to determine the material's ability to resist cryogenic emissions, the standard NS-EN ISO 20088 Part 1, 2 and 3 should be used.
Adequate fire resistance as mentioned in the first subsection, should be stipulated in relation to recognised standards or calculation models. When stipulating fire resistance for load-bearing structures, varying material utilisation can be taken into account.
As regards gas and liquid-filled vessels and pipe sections, the passive fire protection should be sufficient to prevent rupture before depressurisation is carried out.