BS ISO 23601:2020 pdf free.Safety identification一Escape and evacuation plan signs.
BS ISO 23601 This document establishes design principles for displayed escape plans that contain information relevant to fire safety, escape, evacuation and rescue of the facility’s occupants. These plans may also sed by intervention forces in case of emergency. These plans are intended to be displayed as signs in public areas and workplaces. This document is not intended to cover the plans to be used by external safety services nor detailed professional technical drawings for use by specialists.In a set of facility plans, all defined areas shall be illustrated consistently. In order to achieve sufficient visibility and legibility, the vertical ilumination on escape plans shall be no less than 50 lx provided by the normal lighting. Where emergency lighting is provided in case of failure of the normal lighting, the vertical illumination on escape plans comprising ordinary materials or phosphorescent materials shall be no less than 5 lx. Where emergency lighting is not provided in case of failure of the normal lighting or where a phosphorescent safety way guidance system according to ISO 16069 is provided, escape plans comprising phosphorescent materials may be used. In all cases, the phosphorescent material shall be no less than classification C according to ISO 17398. In order to identify safety colours on the plans, the minimum value for the colour-rendering index, Ra, from a lamp shall be≥40. The luminaire shall not substantially subtract from this. Where escape plans are based on phosphorescent materials, excitation shall be from white fluorescent lamps. Low-pressure sodium lamps shall not be used. The background of an escape plan shall have the safety colour white or phosphorescent white as defined in ISO 3864-4:2011 Table 1. The minimum size of an escape plan shall be 297 mm x 420 mm (A3) except for escape plans to be located in individual rooms where the plan size may be reduced to 210 mm x 297 mm [A4). A tolerance of 5 % is acceptable.BS ISO 23601 pdf download.