BS 6853:1999

Committees responsible
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions, and symbols
4 Classification of vehicle categories
5 Design considerations
6 Materials
7 Control of spread of fire and its products
8 Fire detection and suppression systems and passenger
    communication devices
9 Control and function of essential emergency systems
10 Aiding passenger and crew escape
Annex A (informative) Discussion of smoke and toxic fume
                      emission measurement
Annex B (informative) Determination of weighted summation of
                      toxic fume, R
Annex C (informative) General commentary on methodology
Annex D (normative) Methods for measuring smoke density
Annex E (informative) Interpretation of test data
Bibliography
Figures
D.1 Plan view of test chamber
D.2 Photometric system
D.3 Electrical circuit for photocell
D.4 Ideal curve
D.5 Extrapolation of 'knee' point
D.6 Variation in Am (ON) due to various loss mechanisms
D.7 Single phase (flooring) test
D.8 Single phase (small-scale) test
D.9 Schematic arrangement of small-scale test
D.10 Schematic arrangement of panel test
D.11 Schematic arrangement of seating test
D.12 Schematic arrangement of flooring test
D.13 Schematic arrangement of cable test
Tables
1 Interior horizontal supine surfaces
2 Interior vertical surfaces
3 Interior horizontal prone surfaces
4 Exterior horizontal supine surfaces
5 Exterior vertical surfaces
6 Exterior horizontal prone surfaces
7 Interior minor use materials of mass 100g to 500g
8 Exterior minor use materials of mass 400g to 2000g
9 Seat trim
10 Seat shell (back and base)
11 Textiles (free standing and lying) (HS, HP and V surfaces)
12 Mattresses
13 Interior cables
14 Exterior cables
B.1 IDLH values
B.2 Reference values for gases
C.1 Amounts of material for measurement of AO

Gives recommendations regarding fire safety for designing and constructing railway vehicles consisting of or forming part of passenger carrying trains. Applies to new vehicles, and to substantial changes to existing vehicles.