ISO 22899-3:2025
(Main)Determination of the resistance to jet fires of passive fire protection materials — Part 3: Extended test requirements
Determination of the resistance to jet fires of passive fire protection materials — Part 3: Extended test requirements
This document describes an extended test method determining the resistance to jet fires of passive fire protection (PFP) materials and systems or critical process control equipment. It gives an indication of how PFP material or equipment behaves in a severe jet fire and provides performance data under the specified conditions. It does not include an assessment of other properties of the passive fire protection material such as weathering, ageing, shock resistance, impact or explosion resistance, or smoke production. This document is intended to be complementary to ISO 22899-1. It is intended for use in situations when the required fire conditions or limitations on test specimen size or type preclude application of ISO 22899-1.
Détermination de la résistance aux feux propulsés des matériaux de protection passive contre l'incendie — Partie 3: Titre manque
General Information
Standards Content (Sample)
International
Standard
ISO 22899-3
First edition
Determination of the resistance to
2025-01
jet fires of passive fire protection
materials —
Part 3:
Extended test requirements
Reference number
© ISO 2025
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Published in Switzerland
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Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 4
5 Test configurations . 4
5.1 General .4
5.2 Configuration incorporating the test specimen in the rear wall of the flame
compartment .5
5.3 Configuration incorporating the test specimen in the approximate centre of the flame
compartment .6
6 Construction of the test items and substrates . 6
6.1 General .6
6.2 Flame compartment .6
6.3 Nozzle .6
6.4 Panel test specimens (configuration incorporating specimen in the rear wall of the
flame compartment) .7
6.4.1 General requirements for all panel test specimens .7
6.4.2 General requirements for assemblies mounted on panels.9
6.4.3 Cable transit systems .10
6.4.4 Pipe penetration systems .11
6.5 Structural steelwork test specimens (configuration incorporating specimen in the rear
wall of the flame compartment) .14
6.6 Tubular section test specimens (configuration incorporating specimen in the
approximate centre of the flame compartment) .14
6.7 Critical process control equipment (CPCE) test specimens (configuration incorporating
specimen in the approximate centre of the flame compartment) .14
7 Test apparatus and conditions . .15
7.1 Nozzle geometry and position . 15
7.1.1 General . 15
7.1.2 Nozzle and specimen position for specimens incorporated in the rear wall of
the flame compartment . .16
7.1.3 Nozzle and specimen position for specimens in the flame compartment .16
7.2 Fuel .16
7.3 Test environment .16
7.4 Test conditions .16
7.4.1 Rate of temperature rise .16
7.4.2 Minimum sustained temperatures .17
7.4.3 Added air .17
7.5 Fire control thermocouples (FTCs) .17
7.5.1 Design and construction — wire thermocouples .17
7.5.2 Design and construction — cube thermocouples .17
7.5.3 Location .17
8 Specimen instrumentation . 19
8.1 General .19
8.2 Panel test specimens .19
8.3 Structural steelwork test specimens . 20
8.4 Tubular section test specimens . 20
8.5 Penetration sealing systems and assemblies mounted on a panel . 20
8.5.1 General . 20
8.5.2 Panel mounted cable transit systems .21
iii
8.5.3 Panel mounted pipe penetration seals . 22
8.6 Critical process control equipment and assemblies mounted on tubular specimens .24
9 Passive fire protection systems and materials .25
9.1 General . 25
9.2 Thickness measurement and control . 25
9.3 Density . 26
9.4 Conditioning. 26
10 Test procedure .26
11 Repeatability and reproducibility .27
12 Uncertainty of measurement .27
13 Test report .27
14 Practical application of test results .29
14.1 General . 29
14.2 Performance criteria . 29
14.2.1 General . 29
14.2.2 Coatings and spray-applied materials . 29
14.2.3 Systems and assemblies . 30
14.3 Factors affecting the validity of the test . 30
14.3.1 General . 30
14.3.2 Interruption of the jet fire . 30
14.3.3 Failure to comply with temperature requirements .31
14.3.4 Failure of specimen thermocouples .31
14.3.5 Failure of fire control thermocouples .
...
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