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eLibrary > BS ISO 21843:2023 Determination of the resistance to hydrocarbon pool fires of fire protection materials and systems for pressure vessels >

BS ISO 21843:2023 Determination of the resistance to hydrocarbon pool fires of fire protection materials and systems for pressure vessels, 2023

National foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Principle
6 Test equipment [Go to Page]
6.1 General
6.2 Burner arrangement
6.3 Fuel supply for burners
6.4 Test fluids
6.5 Test building
7 Calibration tests [Go to Page]
7.1 General requirements
7.2 Calibration test vessel construction
7.3 Calibration test procedure
7.4 Analysis of test data
7.5 Requirements for successful calibration tests
7.6 Environmental conditions
7.7 Tolerances
7.8 Calibration and test report
8 Construction of fire test specimens
9 Instrumentation
10 Fire protection materials and systems [Go to Page]
10.1 General
10.2 Applied fire protection materials
10.3 Assemblies and mounted fire protection systems
11 Test procedure
12 Termination of the test
13 Repeatability and reproducibility
14 Uncertainty of measurement
15 Test report
16 Practical application of test results [Go to Page]
16.1 Pressure relief valve (PRV)
16.2 Propane (or alternative test fluid) fill level
17 Performance criteria [Go to Page]
17.1 General
17.2 Substrate temperature
17.3 Coatings and spray-applied materials
17.4 Systems and assemblies
18 Factors affecting the validity of the test [Go to Page]
18.1 Interruption of the test
18.2 Failure of TCs and DFTs
18.3 Failure of pressure transducers
18.4 Test-related tube and pipe
18.5 Variation in environmental conditions
18.6 Directional flame thermometer (DFT) results
19 Recommended classification procedures [Go to Page]
19.1 General
19.2 Type of fire
19.3 Type of application
19.4 Classification based on temperature rise and period of resistance
19.5 Classification based on duration before failure
Annex A (informative) Example piping and instrumentation diagram for test facility
Annex B (informative) Directional flame thermometers (DFTs)
Annex C (normative) Method of affixing thermocouples
Annex D (informative) Radiation-convection (R-C) balance
Annex E (informative) Additional classification procedures: Classification based on duration before failure
Bibliography [Go to Page]

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