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BS 7990:2003

Current
Current

The latest, up-to-date edition.

Tube furnace method for the determination of toxic product yields in fire effluents
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

19-03-2003

This British Standard describes a tube furnace method for the generation of fire effluent for the identification and measurement of its constituent combustion products. It uses a moving test specimen and a tube furnace at different temperatures and air flow rates as the fire model. The method can be used to model a wide range of fire conditions by using different combinations of temperature, non-flaming and flaming decomposition conditions and different fuel/oxygen ratios in the tube furnace. These include the following types of fires, as detailed in BS 7899-2:1999, Table 8: Stage 1: Non-flaming: Stage 1b) Oxidative pyrolysis from externally applied radiation; Stage 2: Well ventilated flaming (representing a flaming developing fire); Stage 3: Less well ventilated flaming: Stage 3a) Small vitiated fires in closed or poorly ventilated compartments; Stage 3b) Post-flashover fires in large or open compartments. For each flaming fire type the minimum conditions of test are specified in terms of the equivalence ratio ϕ as follows: Stage 2: ϕ

Committee
FSH/16
DevelopmentNote
To be read in conjunction with BS 7899-1(1997) and BS 7899-2(1999) Supersedes 00/541663 DC (03/2003) Reviewed and confirmed by BSI, November 2008. (11/2008)
DocumentType
Standard
Pages
30
PublisherName
British Standards Institution
Status
Current
Supersedes

16/30342722 DC : 0 BS ISO 19703 - GENERATION AND ANALYSIS OF TOXIC GASES IN FIRE - CALCULATION OF SPECIES YIELDS, EQUIVALENCE RATIOS AND COMBUSTION EFFICIENCY IN EXPERIMENTAL FIRES
EN 60695-7-2:2011 Fire hazard testing - Part 7-2: Toxicity of fire effluent - Summary and relevance of test methods
PD 6686:2006 Guidance on directives, regulations and standards related to prevention of fire and explosion in the process industries
BS ISO 19703:2005 Generation and analysis of toxic gases. Calculation of species yields, equivalence ratios and combustion efficiency in experimental fires
09/30205350 DC : 0 BS EN 60695-7-2 ED.1 - FIRE HAZARD TESTING - PART 7-2: TOXICITY OF FIRE EFFLUENT - SUMMARY AND RELEVANCE OF TEST METHODS
ISO 19703:2010 Generation and analysis of toxic gases in fire Calculation of species yields, equivalence ratios and combustion efficiency in experimental fires
I.S. EN 60695-7-2:2011 FIRE HAZARD TESTING - PART 7-2: TOXICITY OF FIRE EFFLUENT - SUMMARY AND RELEVANCE OF TEST METHODS (IEC 60695-7-2:2011)
IEC 60695-7-2:2011 Fire hazard testing - Part 7-2: Toxicity of fire effluent - Summary and relevance of test methods
04/30069011 DC : DRAFT FEB 2004 ISO/DIS 19703 - GENERATION AND ANALYSIS OF TOXIC GASES IN FIRE - CALCULATION OF SPECIES YIELDS, EQUIVALENCE RATIOS AND COMBUSTION EFFICIENCY IN EXPERIMENTAL FIRES
ISO/TR 16312-2:2007 Guidance for assessing the validity of physical fire models for obtaining fire effluent toxicity data for fire hazard and risk assessment Part 2: Evaluation of individual physical fire models
BS EN 60695-7-2:2011 Fire hazard testing Toxicity of fire effluent. Summary and relevance of test methods
UNE-EN 60695-7-2:2012 Fire hazard testing - Part 7-2: Toxicity of fire effluent - Summary and relevance of test methods

BS 7899-1:1997 Code of practice for assessment of hazard to life and health from fire General guidance
BS 1752:1983 Specification for laboratory sintered or fritted filters including porosity grading
BS 7899-2:1999 Code of practice for assessment of hazard to life and health from fire Guidance on methods for the quantification of hazards to life and health and estimation of time to incapacitation and death in fires
PD 6503-1:1990 Toxicity of combustion products General
BS 476-33:1993 Fire tests on building materials and structures Full-scale room test for surface products
IEC 60754-2:2011 Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity
BS 7982:2001 Guidance on the environmental impact of large-scale fires involving plastics materials
BS ISO 13344:2015 Estimation of the lethal toxic potency of fire effluents

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