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BS 476-33:1993

Current

Current

The latest, up-to-date edition.

Fire tests on building materials and structures Full-scale room test for surface products

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-03-2014

Committees responsible
National foreword
Introduction
Method
1 Scope
2 Normative reference
3 Definitions
4 Principle
5 Fire test room
6 Ignition source
7 Heat flux instrumentation in the fire room
8 Hood and exhaust duct
9 Instrumentation in the exhaust duct
10 System performance
11 Preparation of test specimens
12 Testing
13 Test report
Annexes
Annex A (normative) - Recommended ignition sources
Annex B (informative) - Alternative ignition sources
Annex C (informative) - Instrumentation of test room
Annex D (informative) - Design of exhaust system
Annex E (informative) - Instrumentation in exhaust duct
Annex F (informative) - Calculation
Annex G (informative) - Specimen configurations
Annex H (informative) - Bibliography

Test method simulates a fire that, under well ventilated conditions, starts in the corner of a small room with a single open doorway. Time to flashover, rate of heat release, smoke obscuration and CO and CO2 are measured.

This International Standard specifies a test method that simulates a fire that under well ventilated conditions starts in a corner of a small room with a single open doorway.

The method is intended to evaluate the contribution to fire growth provided by a surface product using a specified ignition source.

A standard ignition source is specified, but other alternatives are allowed. It should, however, be noted that the type, position and heat output of the ignition source will considerably influence the fire growth.

The method is especially suitable for products that for some reason cannot be tested in a small laboratory scale, for example thermoplastic materials, the effect of an insulating substrate, joints, surfaces with great irregularity.

The method is not intended to evaluate the fire resistance of a product.

A test performed in accordance with the method specified in this International Standard provides data for the early stages of a fire from ignition up to flashover.

Committee
FSH/21
DevelopmentNote
Supersedes 90/43557 DC. Also numbered as ISO 9705. (07/2005)
DocumentType
Standard
Pages
40
PublisherName
British Standards Institution
Status
Current

07/30147204 DC : 0 BS 476-10 - FIRE TESTS ON BUILDING MATERIALS AND STRUCTURES - PART 10: GUIDE TO THE PRINCIPLES, SELECTION, ROLE AND APPLICATION OF FIRE TESTING AND THEIR OUTPUTS
BS 6203:2003 Guide to fire characteristics and fire performance of expanded polystyrene materials (EPS and XPS) used in building applications
PD 7974-3:2011 Application of fire safety engineering principles to the design of buildings Structural response and fire spread beyond the enclosure of origin
BS 476-10:2009 Fire tests on building materials and structures Guide to the principles, selection, role and application of fire testing and their outputs
BS 7990:2003 Tube furnace method for the determination of toxic product yields in fire effluents
BS 7904:1998 Guide to smoke measurement units. Their basis and use in smoke opacity test methods
PD 7974-3:2003 Application of fire safety engineering principles to the design of buildings Structural response and fire spread beyond the enclosure of origin (Sub-system 3)
PD 6686:2006 Guidance on directives, regulations and standards related to prevention of fire and explosion in the process industries
PD 7974-1:2003 Application of fire safety engineering principles to the design of buildings Initiation and development of fire within the enclosure of origin (Sub-system 1)

ASTM E 603 : 2017 : REDLINE Standard Guide for Room Fire Experiments
ISO 3261:1975 Fire tests — Vocabulary
ISO/TR 5924:1989 Fire tests — Reaction to fire — Smoke generated by building products (dual-chamber test)
ISO/TR 9122-3:1993 Toxicity testing of fire effluents — Part 3: Methods for the analysis of gases and vapours in fire effluents
BS 6809:1987 Method for calibration of radiometers for use in fire testing

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