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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 1181:1999 ICS 91.060.4
2、0 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specification for Clay flue terminals Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI This British Standard, having been prepared under the direction of the Sector Comm
3、ittee for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 October 1999 BSI 10-1999 First published October 1944 Second edition January 1961 Third edition June 1971 Fourth edition September 1989 The following BSI references relate t
4、o the work on this standard: Committee reference B/506/3 Draft for comment: special announcement in BSI Update February 1999 ISBN 0 580 33032 X BS 1181:1999 Amendments issued since publication Amd. No.DateComments Committees responsible for this British Standard The preparation of this British Stand
5、ard was entrusted by the Building and Civil Engineering Sector Policy and Strategy Committee (B/-) to Technical Committee B/506, upon which the following bodies were represented: Association of British Solid Fuel Appliances Manufacturers British Flue and Chimney Manufacturers Association British Ver
6、miculite Association Building Services Research and Information Association Clay Pipe Development Association Limited Consumer Policy Committee of BSI Department of the Environment, Transport and the Regions Represented by the Building Research Establishment Department of the Environment, Transport
7、and the Regions Construction Directorate Institute of Domestic Heating and Environmental Engineers National Association of Chimney Sweeps National Association of Plumbing, Heating and Mechanical Services Contractors National House Building Council Oil Firing Technical Association for the Petroleum I
8、ndustry (Oftec) Society of British Gas Industries The following bodies were also represented in the drafting of the standard, through sub-committees and panels: HETAS Ltd Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1181:1999 BSI 10-19
9、99i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Normative reference1 3Definitions1 4Materials and manufacture1 5Dimensions and tolerances1 6Performance requirements for flue terminals1 7Sampling1 8Marking1 Annex A (normative) Heat resistance test3 Annex B (normative) A
10、cid resistance test3 Annex C (normative) Accelerated weathering test3 Table 1 Cross-sectional dimensions of terminals2 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii BSI 10-1999 BS 1181:1999 Foreword This British Standard has been prepar
11、ed by Technical Committee B/506, Chimneys. Together with BS EN 1457:1999, it supersedes BS 1181:1989, which is withdrawn. The requirements for clay flue liners previously specified in BS 1181:1989 are now specified in BS EN 1457. This new edition of BS 1181 retains the requirements for clay flue ter
12、minals formerly in BS 1181:1989 until a European Standard is prepared. The technical requirements remain unchanged. Annex A, annex B and annex C are normative. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for th
13、eir 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 and ii, pages 1 to 3 and a back cover. The BSI copyright notice displayed in this document ind
14、icates when the document was last issued. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BSI 10-19991 BS 1181:1999 1 Scope This British Standard specifies requirements for clay flue terminals (for use with flue linings) for use with domesti
15、c appliances as detailed in BS 6461-1, and clay flue terminals for use where flue linings are not involved. This standard applies to both glazed and unglazed products and specifies certain dimensions and tolerances, physical and performance characteristics, marking, sampling, and testing and inspect
16、ion procedures to verify compliance and to facilitate quality control. 2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this British Standard. For dated references, subsequent amendments to, or revisions of, an
17、y of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS 6461-1, Installation of chimneys and flues for domestic appliances burning solid fuel (including wood and peat) Part 1: Code of practice for masonry chimneys and flue pipes. 3
18、Definitions For the purpose of this British Standard the following definitions apply. 3.1 nominal height numerical designation of the height of a straight flue terminal which is a convenient round number approximately equal to a manufacturing dimension 3.2 nominal size numerical designation of the b
19、ore or internal width of a unit which is a convenient round number approximately equal to a manufacturing dimension 4 Materials and manufacture Flue terminals shall be manufactured from suitable clays. NOTEThe suitability of clays is assessed by chemical and other tests carried out by the manufactur
20、er. 5 Dimensions and tolerances The limits of bore/internal width and maximum dimensions of flue terminals shall be as given in Table 1. The limits of tolerance on the stated nominal height shall besubject to a minimum of10 mm. 22 % +5 % 6 Performance requirements for flue terminals 6.1 Heat resista
21、nce When subjected to the heat resistance test described in annex A, no test piece shall blister, powder, crack or change in such a way as would impair performance. 6.2 Acid resistance When subjected to the acid resistance test described in annex B, the mass loss of any test piece shall not exceed 0
22、.25 %. 6.3 Accelerated weathering test When subjected to the accelerated weathering test described in annex C, no test piece shall: a) show any new cracks; b) show any change in minor acceptable defects; c) show spalling or similar structural failure. 7 Sampling Sampling and tests relating to materi
23、al composition and method of manufacture (see 6.1, 6.2 and 6.3) shall be performed initially and whenever a change is made in material composition or method of manufacture. 8 Marking A company trade mark or the name of the manufacturer, and a means of identifying the date of manufacture shall either
24、 be impressed, preferably before firing, or shall be marked indelibly on each flue terminal after firing. All flue terminals shall be clearly and indelibly marked before dispatch with the number of this British Standard, i.e. BS 1181. In addition type A flue terminals shall be marked A, and type B f
25、lue terminals shall be marked B. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 BSI 10-1999 BS 1181:1999 Table 1 Cross-sectional dimensions of terminals Dimensions in millimetres Nominal sizeType A: Limits of bore/internal width Maximum e
26、xternal diameter/width Type B: Limits of bore/internal width min.max.min.max. Circular 125119135175116137 150145160200143163 175169186230167189 185179198242177202 210200220268200229 225219239287216245 250242266314239270 300292317385288323 Square 175 3 175169186240167189 185 3 185179198250177202 200
27、3 200193213260191218 225 3 225219239295216245 250 3 250242266320240270 300 3 300292317400288323 NOTE 1Type A flue terminals are for use with flue linings. Type B flue terminals are for use with systems where flue linings are not involved. NOTE 2No part of a type A flue terminal for use with solid fu
28、el should be less than 210 mm circular nominal size or 185 3 185 mm square nominal size. These limitations should not apply to the size of any side entries which could be incorporated in the design of type A flue terminals. The main inlet and outlet(s) to type B flue terminals can be of different no
29、minal sizes but should not deviate beyond the appropriate limits given in the table. These limitations do not apply to the size of any side entries which may be incorporated in the design of type B flue terminals. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:54 GMT+00:00 2006, Uncont
30、rolled Copy, (c) BSI BS 1181:1999 BSI 10-19993 Annex A (normative) Heat resistance test Test units shall be straight flue terminals not less than 300 mm in height and of 210 mm nominal circular or 185 mm by 185 mm nominal square section. If neither section is normally produced, units for testing sha
31、ll be selected from the nearest nominal section normally produced. Place the test unit in a kiln or oven capable of holding the unit without touching the sides. Raise the temperature inside the kiln or oven steadily at a rate not exceeding 200 8C/h to a maximum temperature of 1 000 8C. Maintain this
32、 temperature for a period of not less than 1 h. Cool the oven slowly, i.e. at a rate of not more than 100 8C/h. Annex B (normative) Acid resistance test Test pieces shall be freshly broken pieces of the flue terminal about 65 3 104mm3in volume, free from cracks or shattered edges. The test pieces ma
33、y be those already subjected to the heat resistance test given in annex A. Clean and dry them at a temperature of not less than 150 8C until no further loss of mass (correct to 0.01 g) is noted on successive weighings. Immerse the test pieces for 48 h in 500 ml of each of the test solutions at a tem
34、perature of 155 8C. The test solutions shall be as follows: a) Hydrochloric acid solution, c (HCI) = 1 mol/l (d = 1.18); b) Nitric acid solution, c (HNO3) = 1 mol/l (d = 1.42); c) Sulfuric acid solution, c (H2SO4) = 0.5 mol/l (d = 1.84). The weighing machine shall be accurate to within 0.01 g when l
35、oaded with 200 g. On removal from the solution, carefully and thoroughly wash each test piece with hot distilled water and then boil in 500 ml of distilled water for 0.5 h. Dry the test piece at a temperature of not less than 150 8C until no further loss of mass can be noted on successive weighings.
36、 Calculate the loss of acid soluble matter in the test piece as a percentage of the dry mass as follows: Percentage loss in dry mass is (M12 M2) 3 100 M1 where M1is the mass of the test piece before treatment in grams (g); M2is the mass of the test piece after treatment in grams (g). Annex C (normat
37、ive) Accelerated weathering test A test specimen shall be made using the same materials and method of manufacture as the flue terminal. It shall be not less than 150 mm high and of such a nominal size and wall thickness as to be typical of the range of flue terminals produced. Examine the test speci
38、men prior to the test and mark any defects which are already present. Place the test specimen in an airtight box and evacuate it to at least 300 mm of mercury, taking care to place it in such a position as to permit gradual immersion during the next operation. Maintain the vacuum for 2 h. Introduce
39、water into the box by suction, in such a way that complete immersion of the specimen is obtained in about 30 min. Then subject the test specimen to the following sequence of freezing and thawing. a) Place the test specimen in a tank filled with water which is itself located in the centre of a refrig
40、erator and cool this water to a temperature of not greater than 5 8C. b) Draw out the water and continue the freezing until the test specimen reaches a temperature of (2155) 8C. During this stage of the test agitate the air in the surrounding refrigerator by fans. c) Introduce water into the tank at
41、 a temperature of (155) 8C until the test specimen is completely immersed. Keep the specimen for not less than 30 min in the water maintained at this temperature by heating and stirring so that the temperature in the test specimen reaches (155) 8C at the end of period. Repeat the freezing and thawin
42、g 25 times. Remove the test specimen and examine it to determine if: 1) any new cracks have appeared; 2) there has been any change in defects noted prior to the test; 3) there has been any spalling or similar structural failure. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:54 GMT+00:
43、00 2006, Uncontrolled Copy, (c) BSI BS 1181:1999 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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