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1、BRITISH STANDARD BS 8423:2002 Fireguards for fires and heating appliances for domestic use Specification ICS 13.220.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006,
2、 Uncontrolled Copy, (c) BSI BS 8423:2002 This British Standard, having been prepared under the direction of the Consumer Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 08 July 2002 BSI 08 July 2002 The following BSI reference
3、s relate to the work on this British Standard Committee reference CW/24 Draft for comment 00/710103/DC ISBN 0 580 39769 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee CW/24, Fireguards, upon which the following bodies
4、were represented: Baby Products Association Child Accident Prevention Trust Consumer Policy Committee of BSI DTI Consumer Safety Unit HETAS Ltd METCOM National Fireplace Manufacturers Association Oil Appliances Manufacturers Association Amendments issued since publication Amd. No.DateComment License
5、d Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8423:2002 BSI 08 July 2002 i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Normative references1 3Terms and definitions1 4Tolerances2 5Co
6、nstruction2 6Performance requirements7 7Marking and labelling8 8Instructions8 9Purchase information9 10Packaging9 Annex A (normative) Small parts10 Annex B (normative) Strength test11 Annex C (normative) Rigidity test13 Annex D (normative) Impact test15 Bibliography19 Figure 1 Screw eye3 Figure 2 Ex
7、ample of a moveable fireguard for portable heating appliances 4 Figure 3 Example of a permanently fixed fireguard5 Figure 4 Example of a detachable fireguard6 Figure A.1 Small parts cylinder11 Figure B.1 Arrangement for strength test12 Figure B.2 Reference points for loading and measurement12 Figure
8、 C.1 Test rigs for rigidity testing14 Figure D.1 Impactor17 Figure D.2 Positions of impact18 Table 1 Allowable levels of toxic elements in fireguard coatings7 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
9、8423:2002 ii BSI 08 July 2002 Foreword This British Standard has been prepared by Technical Committee CW/24 and is a revision of both BS 6778:1986 and BS 6539:1984 which are withdrawn. Many different sizes and shapes of heating appliances are in use at the present time and fireguards designed for us
10、e with a particular appliance should be both effective in giving protection and convenient in use. The requirements specified in this standard are intended to be comprehensive in these respects. This publication does not purport to include all the necessary provisions of a contract. Users are respon
11、sible for its 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, pages i to ii, pages 1 to 19 and a back cover. The BSI copyright notice displayed in this do
12、cument indicates when the document was last issued. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8423:2002 BSI 08 July 2002 1 1 Scope This British Standard specifies the requirements and methods of test f
13、or the construction and fitting of fireguards intended for use with heating appliances utilizing organic fuel (e.g. gas, solid fuel, oil etc.) or electricity, and which can be situated in an open area or against or on a wall, or within a recess. Such appliances can be permanently fixed in position o
14、r can be moveable, and can incorporate open fires including combination grates, or closed fires, including room heaters and stoves. This standard is intended to protect people from falling into a fire, prevent burns and reduce the risk of injury, particularly to young children and the infirm. In add
15、ition it will reduce the risk of fire resulting from clothing and/or other flammable materials coming into contact with, or in proximity to, burning fuel and/or hot surfaces. The fireguards specified are not intended to reduce the risk of fires caused by flying particles which are covered by BS 3248
16、. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. BS EN 71-1:2001, Safety
17、of toys Part 1: Mechanical and physical properties. BS EN 71-3, Safety of toys Part 3: Specification for migration of certain elements. BS EN 60454-2, Specifications for pressure-sensitive adhesive tapes for electrical purposes Part 2: Methods of test. (IEC 60454-2:1994) BS EN ISO 2409, Paints and v
18、arnishes Cross-cut test. (BS 3900-E6) BS EN ISO 3248, Paints and varnishes Determination of the effect of heat. (BS 3900-G7) 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 heating appliance item of equipment utilizing the energy of organic f
19、uel(s) or electricity to provide domestic heating facilities, including an open fire burning within a fireplace 3.2 fireguard item intended to guard fires and heating appliances, for use in the domestic environment 3.3 moveable fireguard fireguard for use with portable heating appliances, which can
20、be moved from place to place NOTESee Figure 2. 3.4 permanently fixed fireguard fireguard which is intended to be permanently fixed to a wall, for use with a heating appliance that is situated on the floor, a hearth or within a recess, and against or near to a wall of a flue system and/or against or
21、near to a wall at a point of fuel supply NOTESee Figure 3. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8423:2002 2 BSI 08 July 2002 3.5 detachable fireguard fireguard which is intended to be detachable f
22、rom a wall, for use with a heating appliance that is situated on the floor, a hearth or within a recess, and against or near to a wall of a flue system and/or against a wall at a point of fuel supply NOTESee Figure 4. 4 Tolerances For test apparatus unless stated otherwise, all forces, masses and di
23、mensions shall have tolerances as follows: a) forces shall have an accuracy of 5 %; b) masses an accuracy of 0.5%; c) dimensions an accuracy of 0.5 mm; d) angles shall have an accuracy of 2. 5 Construction 5.1 Requirements for all types of fireguard 5.1.1 All accessible edges, points and wires shall
24、 be free from burrs and shall be not sharp when tested in accordance with the method specified in BS EN 71-1:2001, 8.11. 5.1.2 The total area of solid material of the fireguard shall be not more than 20 % of the total area of the complete fireguard so that the effective radiation of an appliance is
25、not unduly reduced. 5.1.3 The aperture of mesh shall be not greater than 26 mm wide and not greater than 56 mm high. 5.1.4 All surfaces of the fireguard, with the exception of the top surface, shall have a continuous vertical band of at least 600 mm. 5.1.5 The dimensions of the fireguard shall be su
26、itable for the heating appliance(s) for which it is claimed to be intended (see Clause 7). The dimensions shall be such that no part of the fireguard, when affixed in accordance with the manufacturers instructions (see Clause 8), is closer than 300 mm to exposed burning fuel, heated elements or radi
27、ants. 5.1.6 Openable area(s), shall be secured by not less than two locking or fastening mechanisms which shall either: a) require a force of at least 60 N to release them; or b) require at least two consecutive actions to release the mechanisms, with the second action being dependent on the first h
28、aving been carried out and maintained. 5.1.7 A top shall be provided across the full width of the fireguard. The depth of the top shall be not less than 250 mm from the front surface, measured horizontally. 5.1.8 To avoid shearing or crushing during the relative movement of hinged sections and movin
29、g panels the following shall apply: a) when the fireguard has been deployed for use, there shall be no gaps greater than 5 mm and less than 12 mm between the parallel edges of adjacent or overlapping panels; b) during the setting up or folding away of the fireguard, gaps between 5 mm and 12 mm are p
30、ermitted between hinged sections and moving sections providing the edges and ends conform to 5.1.1. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8423:2002 BSI 08 July 2002 3 5.2 Moveable fireguards for po
31、rtable appliances NOTE See Figure 2. The fireguard shall not require direct attachment to the heating appliance and the instructed method(s) of attachment (see Clause 8) shall not require any modification to be made to the appliance. If the fireguard is fitted with castors or wheels these shall be l
32、ockable. The locks shall not become unlocked with tested in accordance with Annex D. 5.3 Permanently fixed fireguards NOTE See Figure 3. The fireguard shall incorporate a means for permanent attachment to a wall or to the floor (see Clause 8). The fireguard shall not require direct attachment to the
33、 heating appliance and the instructed method(s) of attachment (see Clause 8) shall not require any modification to be made to the appliance. 5.4 Detachable fireguards NOTE 1See Figure 4. The fireguard shall be provided with two safety hooks, integral with the frame of the fireguard. The hooks shall
34、be: a) capable of engaging with the screw eyes; b) situated at a height between 25 mm and 75 mm above the centre line of the guard; c) provided with a spring mechanism requiring a force of at least 25 N to release the hook, or other device requiring a force of at least 60 N for release. The screw ey
35、es shall be supplied with the fireguard for fixing onto the wall or the fireplace surround at the sides of the appliance. The screw eyes shall be brass or steel wire of diameter not less than 3.5 mm with dimensions as specified below: a) maximum overall length of 38 mm; b) minimum threaded length of
36、 12 mm; c) internal diameter of (11 1) mm. NOTE 2 See Figure 1. Dimensions in mm Figure 1 Screw eye 12 111 38 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8423:2002 4 BSI 08 July 2002 Key 1) Optional base
37、 with castors to retain mobility appliance. Figure 2 Example of a moveable fireguard for portable heating appliances 1 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8423:2002 BSI 08 July 2002 5 Key 1) Opti
38、onal base section for total enclosure of a wall-mounted appliance. 2) Points for attachment to a wall. Figure 3 Example of a permanently fixed fireguard 1 2 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 84
39、23:2002 6 BSI 08 July 2002 Key 1) Detachable fireguard. 2) Screw eye. Figure 4 Example of a detachable fireguard 2 1 A B C A B C Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8423:2002 BSI 08 July 2002 7 6
40、 Performance requirements 6.1 Finish 6.1.1 The fireguard shall have a hard and stable finish, capable of withstanding 4 h at 125?C when tested in accordance with BS EN ISO 3248. Immediately following the test period, the finish shall show no signs of discoloration, flaking or melting. It shall not b
41、e possible to remove or damage any part of the finish by removal of an applied pressure-sensitive, adhesive closing/sealing tape conforming to BS EN ISO 2409 when tested in accordance with BS EN 60454-2. The tape used shall be 25 mm wide and have an adhesion strength of (10 1) N per 25 mm. 6.1.2 Any
42、 coating of paint or varnish, lacquer or similar substance shall not contain any soluble antimony, arsenic, barium, cadmium, chromium, lead, mercury or selenium or any soluble compound of any of those elements. The proportion of the elements calculated shall not exceed the amounts given in Table 1 w
43、hen tested in accordance with BS EN 71-3. Table 1 Allowable levels of toxic elements in fireguard coatings 6.2 Small parts 6.2.1 Non-detachable parts When the fireguard is assembled for use, non-detachable component parts (those parts not designed to be removed), which are considered likely to fit w
44、ithin the small parts cylinder (see A.3 and Figure A.1), shall be tested in accordance with A.1 and A.2. No part shall fit entirely within the small parts cylinder specified in A.3, whatever their position. All non-detachable parts and parts becoming detached when tested in accordance with A.1 and A
45、.2 shall conform to 5.1.1. 6.2.2 Detachable parts When the fireguard is assembled for use, detachable component parts (those parts designed to be removed), which are considered likely to fit within the small parts cylinder (see A.3 and Figure A.1), shall be tested in accordance with A.1 and A.2. No
46、part shall fit entirely within the small parts cylinder specified in A.3, whatever their position. All detachable parts and parts becoming detached when tested in accordance with A.1 and A.2 shall conform to 5.1.1. 6.3 Strength When tested in accordance with Annex B the centre of the front surface o
47、f the fireguard shall be capable of supporting a force of (90 2) N for 1 min and shall not suffer a permanent deformation of more than 13 mm. After testing in accordance with Annex B, the fireguard shall still conform to the requirements of 5.1.8. 6.4 Rigidity When tested in accordance with Annex C
48、the top of the front edge of fireguard, or of any edge that might form the front edge in normal use, shall be capable of supporting a force of 800 N, applied progressively and maintained for 1 min. Following removal of the applied force, the front surface of the fireguard shall not exhibit a permane
49、nt deformation of more than 13 mm in depth and shall still conform to the requirements of 5.1.8. ElementMaximum amount mg/kg Antimony, Sb60 Arsenic, As25 Barium, Ba1 000 Cadmium, Cd75 Chromium, Cr60 Lead, Pb90 Mercury, Hg60 Selenium, Se500 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 01:13:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 8423:2002 8 BSI 08 July 2002 6.5 Impact When tested in accordance with Annex D there shall be no damage that is considered to impai
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