BS 5266-7 PDF

BS Lighting applications. Emergency lighting. standard by BSI Group, 10/15/ View all product details. Most Recent. BRITISH STANDARD BS EN BS The European Standard EN has the status of a British Standard ICS. BS (EN ) covers the emergency lighting and illuminance requirements for escape routes, open areas, high risk task areas and exit signs.

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Together 52667- BS A list of organizations represented on this committee can be obtained on request to its secretary. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.

Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. A version in any other language made by hs under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 55266-7, and conflicting national standards shall be withdrawn at the latest by October It is intended to replace in part national standards relating to emergency lighting luminous requirements.

Users of this EN, prepared in the field of application of Article A of the EC Treaty, should be aware that standards have no formal legal relationship with Directives which may have been made under Article A of the Treaty.

Emergency light standards

In addition, national legislation in the Member states may contain more stringent requirements than the minimum requirements of a Directive based on Article A.

Information on the relationship between the national legislation implementing Directives based on Article A and this EN may be given in a national foreword of the national standard implementing this EN. For the purposes of this standard emergency lighting is regarded as a generic term of which there are a number of specific forms, as shown in Figure 1. The requirements given in this standard are a minimum for design purposes and are calculated for the full rated duration period and end of design life of the equipment; the contribution to illumination by reflected light is ignored.

The overall objective of emergency escape lighting is to enable safe exit from a location in the event of failure of the normal supply. The objective of escape route lighting is to enable the safe exit from a location for occupants by providing appropriate visual conditions and direction finding on escape routes and in special locations, and to ensure that fire fighting and safety equipment can be readily located and used.

The objective of open hs anti-panic lighting is to reduce the likelihood of panic and to enable safe movement of occupants towards escape routes by providing appropriate visual conditions and direction finding. The flow of light for escape routes or open areas should be downward to the working plane 52666-7 illumination should also be provided to any obstruction up to 2 m height above that plane.

The objective of high risk task area lighting is to contribute to the safety of people involved in a potentially dangerous process or situation and to enable proper shut down procedures to be carried out for the 5266–7 of other occupants of the location.

There are emerging techniques that when applied to escape routes in addition to conventional emergency lighting luminaires can enhance their effectiveness in an emergency. These techniques are not included in this standard. Vision varies from person to person, both in the amount of light required to perceive an object clearly and in the time taken to adapt to changes in the illuminance. In general, older people need more light and take a longer time to adapt to low illuminance on a hazard or escape route.

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Much anxiety and confusion can be alleviated by strategically placed signs indicating the way out of a location. It is very important that exits are clearly signposted and are visible, whenever the location is occupied.

It is principally applicable to locations where the public or workers have access.

These normative references are cited in the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.

In this standard the recommendation is fulfilled by the mounting of luminaires at least 2 m above the floor. Signs which are provided at all exits intended to be used in an emergency and along escape routes shall be illuminated to indicate unambiguously the route 5266- escape to a point of safety.

Where direct sight of an emergency exit is not possible, an illuminated directional sign or series of signs shall be provided to assist progression towards the emergency exit.

An escape lighting luminaire complying with EN shall be sited to provide appropriate illuminance near each exit door and at positions where it is necessary to emphasize potential danger or safety equipment. The positions to be emphasized shall include the following: Positions denoted as h or i if not on gs escape route nor 566-7 an open area shall be illuminated to ba lx minimum on the floor.

For level horizontal escape routes the luminous intensity of the luminaires shall not exceed the values in Table 1 within the zone to from bw downward vertical at all angles of azimuth see Figure 2.

For all other escape routes and areas, the limiting values shall not be exceeded at all angles see Figure 3. NOTE High contrast between a luminaire and its background can produce glare.

In escape route lighting the main problem will be disability glare, in which the brightness of the luminaires be dazzle and prevent obstructions or signs being seen. The luminaire shall not substantially subtract from this. These shall not exceed the values in Table 1 within the zone to from the downward vertical at all angles of azimuth see Figure 2.

BS EN BS Lighting applications-Emergency Lighting – MBA智库文档

It shall be free of harmful stroboscopic effects. These shall 526-7 exceed the values in Table 1 within the zone to from the downward vertical at all angles of azimuth. Where a standby lighting level lower than the minimum normal lighting is employed, the lighting is to be used only to shut down or terminate processes. The minimum and maximum luminance is measured over the areas of each colour. For the coloured background a 10 mm wide outer border is 52667- from the measurements.

In order to determine the luminance ratio between two adjacent colours the luminance measurement should be taken at a distance of 15 mm on either side of the junction of the two colours.

A search shall be made for the maximum and minimum ratios. If 5626-7 area of colour is less than 30 mm the patch size shall be reduced. The measurement may be taken up to 20 mm height above the floor. Decree of the Ministry of the Interior dtd.

Annex B informative Countries requiring different light levels A-deviation: Clause Deviation 1 France1 Certified products are mandatory with defined performances. Illuminance and luminance design principles are not used. A minimum illuminance of 2 lx is required along escape routes. Where defined illuminance levels are required by law, they shall not be considered as design values but actual measured values including gs and available when emergency lighting is required. The horizontal illuminance at floor level on the centre line of 5266- clearly defined escape route shall be not less than 0,5 lx.

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The horizontal illuminance at floor level on the centre line of a defined escape route should be not less than 0,2 lx. Wider escape routes can be treated as a number of 2 m wide bands. The emergency lighting specified in this code should be provided within 5 s of the failure of the normal lighting supply. United Kingdom SI No. The emergency lighting detailed in bz code should be provided within 5 s of the failure of the normal lighting supply, but at the discretion of the enforcing authority this period can be extended to a maximum of 15 s in premises likely to be occupied for the most part by persons who are familiar with them and the escape routes.

To achieve adequate uniformity, the luminaires must be spaced less than 4 times their mounting height with minimum two products in a room. General France3 The photometric approach 2566-7 illuminance is not used in buildings open to the public and in work places. It presents the UK view on standards in Europe and at the international level. It is incorporated by 5266- Charter. Revisions British Standards 52667 updated by amendment or revision.

Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if hs finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover.

BS EN 1838:1999, BS 5266-7:1999

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