1、CEN ENaL055 96 = 3404589 0137223 422 BRITISH STANDARD 1 BS EN 1055 : 1996 BS 2782 : Plastics piping systems - Thermoplastics piping systems for soil and waste discharge inside buildings - Test method for resistance to elevated temperature cycling Part 11 : Method 1111A : 1996 I l The European Standa
2、rd EN 1055 : 1996 has the status of a British Standard ICs 23.040.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 1055 : 1996 The following BSI references relate to the work on this standard Committee reference PRV61 Draft for comment 94305478 DC ISBN O 580 25875 O Th
3、is British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 September 1996 O BSI 1996 ., Committees responsible for this British Standard The preparation of this Br
4、itish Standard was entrusted to Technical Committee PRV61, Plastics piping systems and components, upon which the following bodies were represented British Gas pic British Plastics Federation British Plumbing Fittings Manufacturers Association British Valve and Actuator Manufacturers Association Dep
5、artment of the Environment (British Board of Agrment) Department of the Environment (Building Research Establishment) Depariment of the Enwronment (Property and Buildings Directorate) Department of Ii-ansport Electricity Association Federation of Civil Engineering Contractors Health and Safely Execu
6、tive Institute of Building Control Institute of Materials Institution of Civil Engineers Institution of Gas Engineers Institution of Water and Environmental Management National Association of Plumbing, Heating and Mechanical Services Contractors Pipeline Industries Guild Plastics Land Drainage Manuf
7、acturers Association Society of British Gas Industries Sociew of British Water Industries Water Companies Association Water Services Association of England and Wales The following bodies were also represented in the drafting of the standard, through subcommittees and panels: ERA Technology Ltd. Engi
8、neering Equipment and Materials Users Association RAFRA Technology Ltd. Amendments issued since publication Amd. No. lD%e I Textaffected CEN EN*l1055 96 3404589 0137225 2T5 BS EN 1055 : 1996 Contents page Committees responsible Inside front cover National foreword 11 Foreword 2 Method 1 Scope 3 2 No
9、rmative references 3 3 Definitions and symbols 3 4 Principle 3 5 APP- 3 6 Test assembly 6 7 Procedure 7 8 Testreport 7 Figures 1 2 - - no material-dependent requirements are given; editorial changes have been introduced. The materialdependent test parameters andor performance requirements are incorp
10、orated in the System Standard(s) concerned. No existing European Standard is superseded by this standard. This standard is one of a series of standards on test methods which support System Standards for plastics piping systems and ducting systems. According to the CENKENELEC Internal Regulations, th
11、e following countries are bound to implement this European Standard Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 0 BSI 1996 CEN ENxI105.5 96 m 3404589 0337229 940 1
12、Scope This standard specifies a method for testing the resistance of thermoplastics piping systems for soil and waste discharge inside buildings, marked B, or buried in the ground withii the building structure, marked BD or UD, to 1500 cycles of elevated temperature cycling. The method assesses leak
13、tightness and resistance to sagging. NOTE. Definitions for application area codes, such as E, are given in the referring standards. 2 Normative references This standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropr
14、iate 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 standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication refer
15、red to applies. ISOiTR 7024 Above-ground dmimge - Recommended practice and techniquesfor the installation of unphticized polyvinyl chloride (PVC-U) sanitary pipework for a,bove-ground systems inside buildings 3 Definitions and symbols 3.1 Definitions For the purposes of this standard, the foilowing
16、definitions apply: 3.1.1 nominal outside diameter (ci,) The specified diameter, in millimetres, assigned to a nominal size N/OD) (prEN 1329-1 : 1994). 3.1.2 expansion gap (LE) The distance between the bottom of a socket and the spigot of the inserted component allowing expansion of the system. 3.2 S
17、ymbols For the purposes of this standard, the symbols given in ISOiTR 7024 apply 3.3 free length between Tied points The maximum permitted span between support centres in an above ground installation. Page 3 EN 1055 : 1996 4 Principle A test assembly of pipes and fittings is subjected to a given pat
18、tern of thermd cycling by using hot and cold water alternately for a given number of cycles, during which the leaktightness of joints is verified by inspection and sagging of pipe is checked against a given limit, NOTE. It is assumed that the following test parameters are set by the standard malng r
19、eference to this standard the minimum value for the expansion gap, LE, for a pipesocket joint (see clause 6). 5 Apparatus 6.1 Thermometer or other temperature measuring device, capable of checking conformity of the test assembly inlet water temperature to the specified temperature limits (see 5.2, 5
20、.3 and clause 6). NOTE. It is recommended that the device is capable of recording andor controlling the relevant temperaturehime cycles (see clause 7). 6.2 Cold water source, capable of supplying, every 4 min, the following quantity(ies) of water at (15 f 5) “C (see 7.3); a) for programme A, (30 0,5
21、) 1 in (60 2) s; b) for programme B, (15 Q,5) 1 in (60 f 2) s. 5.3 Hot water source, capable of supplying, every 4 min, the following quantity(ies) of water at (93 2) “C (see 7.3): a) for programme A, (30 f 0,5) 1 in (60 f 2) c; b) for programme B, (15 f 0,5) 1 in (60 f 2) s. 5.4 Plugs or other clos
22、ures, to seal temporarily the water outlet (see 7.1 and 7.4). 6.6 Device, capable of measuring pipe sagging as shown in figures 1, 2 and 3, as applicable, to an accuracy of 0,l mm. 6.6 Supporting brackets, as appropriate, comprising anchor brackets (fixed points) capable of restraining piping compon
23、ents, and guide brackets, capable of supporting piping components without inhibiting longitudmal movement (see clause 6 and figures 1, 2 and 3). CEN ENM10.55 96 3404589 0137230 662 = Page 4 EN 1055 : 1996 DE Key A Ring seal socket, indicated according to ISO/TR 7024 : 1986 E Hot water B Fixedpoints
24、F Sagging measuring point C Guide brackets G Pipe D Cold water NOTE. in this test assembly joints with elastomeric ring seals are indicated as examples. Other types of joints may be used as appropriate. Figure 1. Typical test assembly for elevated temperature cycling test (1600 cycles) fir piping sy
25、s:ems inside buildings (applicatior. area B only) O BSI 1996 CEN ENWID55 96 9 3404589 0137231 5T9 9 * CB * Page 5 EN 1055 : 1996 -B DE i 85 I :q,=40mm or 50mm ” 7 Key A Ring seal socket, indicated according to ISORR 7024 : 1985 E Hot water B Fixed points F Sagging measuring point C Guide brackets G
26、Pipe D Cold water NOTE. In this test assembly joints with elastomeric ring seals are indicated as examples. Other types of joints may be used as appropriate. Figure 2. Qpical test assembly for elevated temperature cycling test (1500 cycles) for piping systems buried in the ground within the building
27、 structure (application areas BD and UD) O BSI 1996 CEN EN*3055 b m 3404589 0337232 435 m Page 6 EN 1055 : 1996 Key A Waterinlet B Sagging measuring point C Fixed bracket D Guide brackets Dimensions in millimetres. Figure 3. Spica1 test assembly for elevated temperature cycling test (1600 cycles) fo
28、r piping systems with components with nominal outside diameter d, smaller than 40 mm for use inside buildings (application area B) 6 Tkst assembly mical test assemblies are shown in figure 1 The test assembly shall comprise a vertical stack of pipes with fittings and two near-horizontal pipe assembl
29、ies with fittings. The assembly shall depend upon the purposes for which the components are intended as follows: a) for components intended for use in systems inside buildings (application area B only); b) as a test assembly supplementary to a) for components intended for use in systems buried in th
30、e ground within the building structure (application areas BD and UD). (application area B only), figure 2 (application areas BD and UD) and figure 3 (application area B for nominal diameters d, smaller than 40 mm), where the positions and the types of the joint or fitting are indicative only For app
31、lication areas BD and UD, the components shal be assembled so that the weld lines wiil be in the water flow. The position and the type of joint(s) to be used shall be as appropriate for the system under test (e.g. cemented joint, welded joints, lip seal joints). The assembly of the joint(s) shall be
32、 carried out in accordance with the manufacturers inslmctions and any applicable recommended practice for installaton, e.g. to avoid undue stres in the test assembly The symbols used to specify or report on a test assembly shall conform to ISORIZ 7024. O BSI 1996 CEN ENz1055 7b = 3404587 O137233 371
33、 W a! a! u) Instailation of the test assembly shall be carried out on a fm wall or frame using both fixed and guide brackets, with no other support of the test assembly Anchor brackets shall be located directly on, below or behind the sockets of each pipe length. Except for the following: a) the fir
34、st pipe in the near-horizontal line from the inlet, where a possible sagging is to be measured (see figure 1, figure 2 or figure 3, as applicable); b) pipe with nominal outside diameter d, smaller than 40 nun, where the distance between the brackets always shall be 0,4 m. Guide brackets for near-hor
35、izontal assemblies shall be placed not less than 10 d, apart Room for expansion of pipes shall be provided for ali spigot ends of pipes, but not for the spigot ends of fittings, and shall be not less than the minimum value for the gap, LE, as specified by the referring standard. The entry of hot wat
36、er into the test assembly shall be direct, Le. there shall be no heat-absorbing intermediate pieces. 7 Procedure 7.1 Fill the test assembly with water, at a temperature not exceeding 20 OC, to a head of 0,5 m above the highest point of the centreline of the upper lateral pipe. Leave for a minimum pe
37、riod of 15 min and then visually check for and record any leaks. 7.2 If any leaks were observed, check and rectify the joint assembly (see clause 6) and repeat the watertightness test given in 7.1. If any further leaks are observed, stop the test and report the observations in accordance with clause
38、 8. If no further leaks ase observed, proceed in accordance with 7.3 to 7.6. 7.3 While monitoring the test assembly for any signs of leaks or changes of appearance, subject the test assembly to the passage of hot and cold water for 1500 cycles of either programme A or programme B, as applicable, as
39、follows. In case of dispute, maintah the ambient temperature at (20 f 5) “C. Programme A (nomind flow rate 30 i/min). For components with nominal outside diameter d, equal to or greater than 40 nun: a) (30 f 0,5) 1 of water at (93 f 2) “C, measured at the point of entry, over a period of (60 f 2) s;
40、 b) rest and drain period of (60 2) s; c) (30 f 0,5) 1 of water at (15 f 5) “C, measured at the point of entry, over a period of (60 f 2) s; d) rest and drain period of (60 f 2) s; e) return to a). Page 7 EN 1055 : 1996 Programme B (nominal flow rate 15 Vmin). For components with nominal outside dia
41、meter o!, smaller than 40 m: a) (15 f 0,5) 1 of water at (93 * 2) OC, measured at the point of entry, over a period of (60 f 2) s; b) rest and drain period of (60 2) s; c) (15 f 0,s) 1 of water at (15 f 5) OC, measured at the point of entry, over a period of (60 f 2) s; d) rest and drain period of (
42、60 f 2) s; e) return to a). 7.4 On completion of the 1500 cycles, fll the test assembly with water, at a temperature not exceeding 20 OC, to a head of 0,5 m above the highest point of the centreline of the upper lateral pipe. Leave for a minimum period of 15 min and then visually check for and recor
43、d any leaks. 7.6 Check for any sagging at the midpoint between the guide brackets separated by lo c) the test temperatures, in degrees Celsius; d) any observations of leakage before the cycling test (see 7.2); e) any relevant observations during the cycling test e.g. any signs of leakage or deformat
44、ion (see 7.3); f) the results of the water! g) any sagging found at the end of the cycling test (see 7.6); h) any changes observed in the appearance of the test pieces during the test, or immediately afterwards, including any visible opening of weld lines (see 7.3 and 7.6); i) any fxtors which may h
45、ave affected the results, such as any incidents or any operating details not specified in this standard j) the date of the test. O BSI 1996 CEN EN*L055 9b 3404589 0337234 208 m BS EN 1055 : 1996 List of references See national foreword. O BSI 1996 CEN ENrL055 7b 3404587 0337235 344 = BS EN 1055 : 19
46、96 BS 2782 : Part 11 : Method 1111A : 1996 BSI 389 Chiswick High Road London w4 4Ard BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated
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