BS_9992-2020.pdf

BRITISH STANDARDBS9992:2020ContentsPageForewordSection 1:General0 Introduction0.1 General principles0.2 Approval,assurance and verification arrangements for railway works1Scope42 Normative references3 Terms and definitions14 General recommendations and background94.1 Basis of design94.2 Property protection and business continuity104.3 Mixed-use premises104.4 Security104.5 Stakeholder consultation workshop(SCW)10Section 2:Management of fire risk145 General management procedures146 Fire risk assessment147Emergency planning148 Failure or non-availability of equipment15Section 3:Integrating management within fire safety design179 Operational concept1710 Management input during the design process10.1 General10.2 Staffing levelse10.3 Management of tunnels1911Trial operations and testing112Designing for the management of means of escape20Section 4:Designing means of escape2113 Principles of means of escape2114Means of escape from areas of railway stations which have public access114.1 Risk profile3114.2 Occupancy114.3Means of escape214.4 Travel distances2314.5 Escape routes214.6 Escape capacityTable 1-Vertical and horizontal escape capacity24Table 2-Escalator escape capacity2Table 3-Pedestrian travel speeds414.7 Methodology to be used in calculating escape capacity2414.8 Platform sizes2615Means of escape from non-public areas of stations2615.1 Risk profile2615.2 Occupancy26Table 4-BoH floor space factors2615.3 Travel distances2615.4 Escape provisions2716 Means of escape for persons with restricted mobility(PRM)28THE BRITISH STANDARDS INSTITUTION 2020-ALL RIGHTS RESERVED I