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1、a Date: 8 October 2007 Origin: National Latest date for receipt of comments: 30 November 2007 Project no.: 2007/02510 Responsible committee: FSH/12/1 Installation and servicing Interested committees: FSH/12; FSH/12/2; FSH/12/3; FSH/12/4; FSH/12/5 Title: Draft BS 5839-1/A2 Fire detection and fire ala
2、rm systems for buildings Part 1: Code of practice for system design, installation, commissioning and maintenance Supersession information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national
3、 standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 30 November 2007. This draft is issued to allow comments from interested parties; all comments will
4、be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation wit
5、hin a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email ordersbsi-. British, Interna
6、tional and foreign standards are also available from BSI Customer Services. British Standards on CD or Online are available from British Standards Publishing Sales Limited. Tel: 01344 404409 or email bsonlinetechindex.co.uk. Information on the co-operating organizations represented on the committees
7、 referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/www.bsi-. Direct tel: 02
8、0 8996 7164 Responsible Committee Secretary: Mr John Fisher (BSI) E-mail: john.fisherbsi- Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 07/30171700 DC Licensed Copy: London South Bank Universit
9、y, London South Bank University, Fri Nov 16 07:22:32 GMT+00:00 2007, Uncontrolled Copy, (c) BSI b Introduction Your comments on this draft are welcome and will assist in the preparation of the consequent British Standard. If no comments are received to the contrary, this draft may be implemented unc
10、hanged as a British Standard. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically,
11、 to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adh
12、ere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/www.bsi- Date: xx/xx/200x Document: ISO/
13、DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambi
14、guous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-D
15、OS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:22:32 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Draft BS 5839-1:2002/Amd 2 1 Draft BS 5839-1:2002/Amd 2 Only changed text is sh
16、own. Added text is shown in red underline; deleted text in blue strikethrough. Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:22:32 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Draft BS 5839-1:2002/Amd 2 2 1 Scope Change to paragraph 10 as follows: Recommendat
17、ions for fire detection and alarm systems in hospitals are given in the NHS Estates publication HTM 05-03 Part B82. 2 Normative references Change references as follows: BS 5979:2000, Remote centres receiving signals from fire and security systems Code of practice.Code of practice for remote centres
18、receiving signals from security systems. Health Technical Memorandum 05-03 Part B82, Fire detection and alarm Alarm and detection systems. Department of HealthNHS Estates. London: TSO (The Stationery Office). Delete references as follows: BS EN 54-12, Fire detection and fire alarm systems Part 12: S
19、moke detectors Optical beam detectors. LPS 1257, Test specification for transmission link integrity Radio-linked fire detection and alarm equipment. Loss Prevention Certification Board, 2001. Add references as follows: BS EN 54-20, Fire detection and fire alarm systems Part 20: Aspirating smoke dete
20、ctors. BS EN 54-25, Fire detection and fire alarm systems Part 25: Components using radio links and system requirements. BS ISO 7240-8, Fire detection and alarm systems Part 8: Multi-sensor, carbon monoxide and heat detectors. BS ISO 7240-15, Fire detection and alarm systems Part 15: Fire detection
21、and alarm systems Multisensor fire detectors. 5.1.3 Category L Systems Change to list item e), paragraph 2 as follows: Often, the design is based on a localized need for fire detection in only part of a buildingfire risk assessment or forms part of a fire engineering solution. Protection may might b
22、e provided to compensate for some departure from normal guidance elsewhere or as a part of the operating system for a fire protection system. Such a system could be as simple as one that incorporates a single automatic fire detector in one room (in which outbreak of fire would create undue risk to o
23、ccupants, either in the room or elsewhere in the building), but the system could comprise comprehensive detection throughout large areas of a building in which, for example, structural fire resistance is less than that normally specified for buildings of that type; Licensed Copy: London South Bank U
24、niversity, London South Bank University, Fri Nov 16 07:22:32 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Draft BS 5839-1:2002/Amd 2 3 11.2 Recommendations Additional list items as follows: f) Aspirating smoke detectors should conform to BS EN 54-20; g) Components and systems using radio links should
25、conform to BS EN 54-25; h) Multi-sensor, optical and heat detectors should conform to BS ISO 7240-15; i) Multi-sensor, carbon monoxide and heat detectors should conform to BS ISO 7240-8. Renumber remaining list items f)m) as j)q). 12.2.2 System integrity Change to list item m) as follows: m) If the
26、control and indicating equipment is supplied with power from power supply equipment contained in a separate enclosure, the cables between the equipment should be duplicated such that a single open or short circuit in the connections does not completely remove power from the control and indicating eq
27、uipment. The duplicate cables should be separated by at least 300 mm where practical. Where a power supply unit or a standby battery(ies) are housed in a separate enclosure from the control and indicating equipment, any cable between that enclosure and the CIE should be suitably protected against ov
28、ercurrent, and against short-circuit of the cable. NOTE 9 Where the enclosure is located immediately adjacent to, and in contact with, the CIE, such that cables run directly between the enclosure and the CIE, the enclosure need not be regarded as separate from the CIE; the recommendations of 12.2.2m
29、) do not then apply. 13.2.1 Recommendations applicable to all detection zones Change to list item a) as follows: a) If manual call points are located on the landings of an enclosed stairway see 20.2c), the manual call point on each level, other than the final exit level from the stairway, should be
30、incorporated within the zone that serves the adjacent accommodation on that level. A manual call point located within the stairwell at a final exit to open air may be incorporated within the detection zone serving the stairwell see 13.2.3c). 13.2.3 Additional recommendations applicable to detection
31、zones that contain non-addressable automatic fire detectors Change to list item c) as follows: c) Automatic fire detectors within any enclosed stairwell, liftwell or other enclosed flue-like structure should be considered as a separate detection zone. Manual call points located at final exits to ope
32、n air from stairwells may be incorporated within these detection zones (but may, alternatively, .be incorporated within the detection zone described in 13.2.1a). 16.2.3 Recommendations applicable to hospitals and residential care premises Change to list item a) as follows: a) Audible alarms in hospi
33、tals should comply with the recommendations of the Department of Health publication HTM 05-03 Part B82. Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:22:32 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Draft BS 5839-1:2002/Amd 2 4 17.2 Recommendations Change t
34、o list item d) as follows: d) The visual alarm signal should be clearly distinguishable from any other visual signal used in the premises. Visual alarm signals should be white or red in colour, unless use of another colour is necessary to distinguish the signals from other visual signals. NOTE The c
35、olour red is preferred. NOTE 1 Labelling the visual alarm device with the word “FIRE“ might be adequate. NOTE 2 Care needs to be taken to ensure, as far as reasonably practicable, that visual alarm signals do not cause epileptic seizures in people with photosensitive epilepsy. In this connection, a
36、flash rate of 3 Hz or less (from a single visual alarm device) is unlikely to result in seizures, but care is necessary to ensure that, in open areas, the field of view from any point is not such that multiple, unsynchronized visual signals can result in an apparent flash rate of a greater frequency
37、; to avoid this, synchronization of visual alarm devices might be necessary. It should be noted that red flashing light is more likely to result in seizures than white (or other coloured) flashing light. Particular care is necessary in, for example, certain health care premises in which a number of
38、people with photosensitive epilepsy may congregate. Change to list item f) as follows: f) !Visual alarms should be mounted on walls or ceilings at a minimum height of 2.1 m.“ 18.1 Commentary Change to paragraph 2 as follows: However, in circumstances, such as buildings with a significant number of p
39、eople with impaired hearing, buildings in which one or more persons with impaired hearing work in relative isolation, and buildings in which one or more persons with impaired hearing tend to move around the building to a significant extent, additional means of giving warning to people with impaired
40、hearing might be appropriate. If the occupants in question tend to be located for a large proportion of their time within a limited area of the building, visual alarm signals might be appropriate in that area (and associated toilets). If they sleep in the building, tactile devices, with or without a
41、ssociated visual alarm devices, might need to be considered (e.g. for compliance with the accessibility requirement imposed under building regulations). These devices, which may, for example, be placed under pillows or mattresses, may be wired into fire alarm device circuits or be triggered by radio
42、 signals. 20.2 Recommendations Additional note to list item h) as follows: NOTE 7 Guidance in support of national building regulations (e.g. in England and Wales, Approved Document M 3 under the Building Regulations 2000) recommends that switches and controls be mounted no higher than 1 200 mm above
43、 floor level, so that they are accessible for disabled people. 22.2 Recommendations for provision of automatic fire detectors Additional note to list item d) 2) as follows: NOTE 4 In a Category L3 system, detectors in rooms opening onto escape routes are provided only to give a warning of fire befor
44、e it affects the escape routes. Detection in voids above or below the rooms might not be necessary for this purpose (e.g. if fire resisting construction separates a void from the adjacent escape route). Renumber existing Note 4 as Note 5. Licensed Copy: London South Bank University, London South Ban
45、k University, Fri Nov 16 07:22:32 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Draft BS 5839-1:2002/Amd 2 5 22.3 Recommendations for siting of heat and smoke detectors Change to list item f) as follows: f) In unventilated voids not greater than 1.5 m in depth, the sensing element of fire detectors sho
46、uld be sited within the top 10 % of the void or the top 125 mm, whichever is the greater (see Figure 7). Voids greater than 1.5 m in depth should be treated as a room and the recommendations of 22.3d) should be applied. In shallow voids, to comply with this recommendation, it might be necessary to m
47、ount the fire detector in an unusual orientation, in which case care should be taken that the deposition of dust or dirt cannot adversely affect the operation of the detector. The manufacturers recommendations should be followed with regard to orientation and the ingress of dirt and dust and any con
48、sequent servicing recommendation. Additional note to list item h) as follows: NOTE 7 In some circumstances, compliance with this recommendation might result in non-compliance with 22.3g). In such circumstances, non-compliance with 22.3g) or 22.3h) need not be regarded as a variation. Renumber existi
49、ng Notes 7 and 8 as Notes 8 and 9. 26.1 Commentary Change to paragraph 3 as follows: It is not normally possible to predict, with any accuracy, those areas of a building in which fire can or cannot occur. At the design stage, the exact routes that cables will follow may also be unknown. Therefore to ensure that cables used for critical signal paths (see 3.13) remain operational for an adequate duration, cables with an inherent ability to resist attack by
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