1、March 2012 English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.220.10; 23.040.70!%S;$“2482401ww
2、w.din.deDIN 14811/A1Firefighting hoses Nonpercolating layflat delivery hoses and hose assemblies for pumps and vehicles; Amendment A1,English translation of DIN 14811/A1:2012-03Feuerlschschluche Druckschluche und Einbnde fr Pumpen und Feuerwehrfahrzeuge; nderung A1,Englische bersetzung von DIN 14811
3、/A1:2012-03Tuyaux de lutte contre lincendie Tuyaux de refoulement aplatissables tanches, sans et avec raccords, pour les pompes et les vhicules de lutte contre lincendie; Amendement A1,Traduction anglaise de DIN 14811/A1:2012-03ModifiesDIN 14811:200801www.beuth.deDocument comprises 14 pagesDTranslat
4、ion by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.04.16 DIN 14811/A1:2012-03 2 A comma is used as the decimal marker. Contents Page Foreword . 3 1 Amendments in “Foreword” 4 2 Amendments in Clause 1 “Scope” . 4 3 Amendments in Clause 2 “Normat
5、ive references”. 4 4 Amendments in 4.1 “General principles for classification” . 4 5 Amendments in 5.3.2.2 “Binding wire” 5 6 Amendments in 5.3.2.3 “Binding means” 5 7 Amendments in 6.1.3 “Minimum burst pressure” . 5 8 Amendment in 6.2 “Adhesion” 5 9 Amendments in 6.6 “Flame resistance” . 5 10 Amend
6、ments in Clause 7 “High pressure layflat hoses for high pressure pumps” 6 11 Amendments in Clause 9 “Marking” . 6 12 Amendments in 10.1 “Type test” 7 13 Amendments in 10.2 “Inspections” . 7 14 Amendments in Annex C “Hose assembly test”. 7 15 Amendments in Annex F “Surface abrasion resistance test” .
7、 7 16 Amendment in Annex G “Point abrasion resistance test” . 7 17 Amendment in Annex I “Flame resistance test” . 7 18 Amendments in Annex J “Ozone resistance test” . 13 19 Amendments in Annex M “Periodic testing and repair of hose assemblies” . 14 20 Bibliography 14 DIN 14811/A1:2012-03 3 Foreword
8、This amendment to DIN 14811:2008-01 has been prepared by DIN-Normenausschuss Feuerwehrwesen (FNFW) (DIN Standards Committee Firefighting and Fire Protection), Working Committee NA 031-04-04 AA Schluche und Armaturen (SpA zu CEN/TC 192/WG 1 und WG 8). Hoses as in this standard serve to convey fire ex
9、tinguishing media. When empty, such hoses can be rolled or folded flat. This amendment to DIN 14811 was necessary to bring the standard up to the current state of technology. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN sha
10、ll not be held responsible for identifying any or all such patent rights. DIN 14811/A1:2012-03 4 The content of DIN 14811:2008-01 has been modified as follows: 1 Amendments in “Foreword” In the second paragraph of the foreword, the additional information on the fire extinguishing media has been dele
11、ted and the second paragraph has been replaced with the following text: “Hoses as in this standard serve to convey fire extinguishing media. When empty, such hoses can be rolled or folded flat.” 2 Amendments in Clause 1 “Scope” In the scope, the additional information on the fire extinguishing media
12、 has been deleted and the text of the scope replaced by the following: “This standard specifies requirements and test methods for non-percolating layflat delivery hoses for fire- fighting purposes and which, when empty, can be folded or rolled flat. It should be noted that water is the testing mediu
13、m used to test performance requirements in compliance with this standard. If other testing media are used, the properties of the hose can change. The standard applies to layflat delivery hoses intended for use at a minimum ambient temperature of 25 C and a working pressure of 1,6 MPa (16 bar) for D
14、25 to B 75 hoses, or 1,2 MPa (12 bar) for A 102 to F 152 hoses. NOTE 1 Additional requirements for high pressure hoses and anti-static hoses are given in Clause 7. NOTE 2 All pressures are gauge pressures and are expressed in megapascals. 1 MPa = 10 bar.” 3 Amendments in Clause 2 “Normative referenc
15、es” In the normative references, the reference to 43-D-1984 R 1993 including footnote 1 has been deleted, and the following standards have been added: DIN 86202, Delivery fire hose coupling type C, PN 16; made of brass, for use on ships DIN 86203, Delivery fire hose coupling type B, PN 16; made of b
16、rass, for use on ships DIN EN 12021, Respiratory equipment Compressed gases for breathing apparatus DIN EN 13611, Safety and control devices for burners and appliances burning gaseous and/or liquid fuels General requirements 4 Amendments in 4.1 “General principles for classification” The text of the
17、 subclause has been replaced by the following: “Hoses shall be assigned to one of the three classes specified in 4.2 to 4.4 according to their design and performance. The holder of the test number (or test number applicant) shall manufacture the jacket and apply the lining and, (where applicable) ou
18、ter cover, ensuring a durable bond. This can be tested on site at the discretion of the Zentralprfstelle fr Feuerlschschluche (German central fire hose testing laboratory) of the Niederschsische Akademie fr Brand- und Katastrophenschutz in Celle before a test number is issued to the first applicant.
19、” DIN 14811/A1:2012-03 5 5 Amendments in 5.3.2.2 “Binding wire” The text of the subclause has been replaced by the following: “For hoses with a diameter 75 mm, the wire used for binding shall be non-corroding or corrosion protected and have a diameter of 1,4 mm to 1,6 mm. For hoses with a diameter 7
20、5 mm, the wire used for binding shall be non-corroding or corrosion protected and have a diameter of 1,8 mm. The binding wire shall exhibit a tensile strength of at least 500 N/mm2 and an elongation at break of 6 % to 15 % for a measured length equal to 35 the wire diameter.” 6 Amendments in 5.3.2.3
21、 “Binding means” The text of the subclause has been replaced by the following: “For each connection piece the hose shall be attached by means of at least (for A 102 and A 110 hoses) three bindings, each having eight turns of wire as in 5.3.2.2 only wire with a 1,8 mm diameter may be used in this cas
22、e, (for B 65, B 70, B 75 hoses) two bindings, each having five turns of wire on the hose itself and one binding with four turns of wire on the coupling, (for C 38, C 40, C 42, C 45, C 52 and C 55 hoses) two bindings, each having four turns of wire, (for D 25 hoses) two bindings, each having three tu
23、rns of wire. The binding shall begin on the hose itself and the turns shall gradually go in the direction of the coupling. The wire shall not be cut after the first binding, but shall continue to be wound in the same direction for the next binding(s). The turns of wire need not be perfectly straight
24、.” 7 Amendments in 6.1.3 “Minimum burst pressure” After the first sentence, the following sentence has been added: “The hose may only burst in a lengthwise direction along the hose.” 8 Amendment in 6.2 “Adhesion” The third paragraph has been replaced by the following text: “Determine adhesion using
25、a power-driven grip having a rate of travel that, in deviation from DIN EN ISO 8033, provides a rate of ply separation of (100 5) mm/min.” 9 Amendments in 6.6 “Flame resistance” The text of the subclause has been replaced by the following: “The flame resistance of hoses (i.e. their behaviour under f
26、lame exposure) shall be tested in accordance with Annex I. At least three of the test pieces (out of the four) shall pass the endurance test with the following times: for class 1 and class 2 hoses: 10 s; for class 3 hoses: 30 s. The test is deemed to have been passed if three of the four test pieces
27、 withstand the test without bursting and the afterflame or afterglow time lasts no longer than 3 seconds.” DIN 14811/A1:2012-03 6 10 Amendments in Clause 7 “High pressure layflat hoses for high pressure pumps” Anti-static hoses have been added to Clause 7 and the text of the clause replaced by the f
28、ollowing: “7 High pressure layflat hoses for high pressure pumps and anti-static hoses 7.1 High pressure layflat hoses for high pressure pumps For layflat hoses for use at working pressures higher than those given in Table 7 (e.g. those for use with an EN 1028-1 FPH 40 250 firefighting pump), the wo
29、rking pressure for which the hose is designed shall be at least 4 MPa (40 bar), the proof pressure at least 6 MPa (60 bar) and the burst pressure at least 10 MPa (100 bar). There shall be no limit to the mass of high pressure layflat hoses, nor to the bending radii for hoses having a normal working
30、pressure higher than 2 MPa (20 bar). 7.2 Anti-static hoses Anti-static hoses generally fall into class 2. These hoses are to be black in colour, have a conductive inner lining and a jacket strengthened with copper strands to deflect electrostatic charge. The electrical conductivity of the hose shall
31、 be 106 at 100 V measured from coupling to coupling. This electrical conductivity shall be reached without exposing the copper strands and having them in contact with the coupling. Anti-static hoses in accordance with this standard shall be used with hose couplings that comply with standards for bra
32、ss couplings (if applicable). Anti-static hoses intended for use in Germany shall be used in combination with the couplings listed in Table 11. Every coupling shall be equipped with a detachable M 8 wing nut or the ability to attach a partly insulated or low-sparking clamping assembly or be equipped
33、 for plug connections (see DIN 14555-12:2005-04, Annex A). Table 11 Couplings for suction and delivery for anti-static hoses Symbol (Preferred series)a Couplings for suction and delivery C 42 DIN 86202 C (however, dimensions of the connecting piece as in DIN 14332-2) C 52 DIN 86202 C B 75 DIN 86203
34、B aHoses which are not preferred series hoses as in Table 1 and therefore should not be used in Germany are not included in Table 11. Couplings for non-preferred hoses shall be agreed. “ 11 Amendments in Clause 9 “Marking” Footnote 2 has been changed to footnote 1 and the third paragraph has been re
35、placed by the following text: “The marking shall not begin within the first 0,5 m from the hose end.” DIN 14811/A1:2012-03 7 12 Amendments in 10.1 “Type test” After the last paragraph, the following paragraph has been added: “If it is determined that there are deviations from the type tested hose, t
36、he test certificate and the test number can be revoked by the Zentralprfstelle fr Feuerlschschluche (German central fire hose testing laboratory) of the Niederschsische Akademie fr Brand- und Katastrophenschutz in Celle.” 13 Amendments in 10.2 “Inspections” The text of the subclause has been replace
37、d by the following: “The laboratory carries out inspections (Kontrollprfungen, in German) of type-tested hoses. To do this, the laboratory takes test pieces from current production and/or hoses from the finished goods warehouse without giving prior notice at intervals of 2 to 5 years. The laboratory
38、 determines by carrying out the inspection, whether or not the manufacturer meets the requirements of 4.1, paragraph 2.” 14 Amendments in Annex C “Hose assembly test” In C.2 the first paragraph has been replaced by the following text: “Raise the pressure to proof pressure as specified in Table 7 and
39、 maintain for 1 min. During this time no leaks shall occur.” 15 Amendments in Annex F “Surface abrasion resistance test” In F.2.3 the existing text has been replaced as follows: “The abrasive material to be used is an abrading strip with a grain size of 602)measuring 50 mm wide, stored on a roll.” 1
40、6 Amendment in Annex G “Point abrasion resistance test” In G.2.3 footnote 4 has been changed to footnote 3. 17 Amendment in Annex I “Flame resistance test” The entire text in Annex I has been replaced by the following: “NOTE The flame resistance of F 125 and F 152 hoses does not need to be tested, d
41、ue to their operational range. I.1 Test piece I.1.1 Test piece form Test pieces shall be taken from the hose under test and have a length of 800 mm. The test pieces shall be assembled with the connecting piece of the relevant coupling specified in 5.3. I.1.2 Number of test pieces The test shall be c
42、arried out on four test pieces. 2)For sources for such abrasives, contact Normenausschuss Feuerwehrwesen (FNFW) (DIN Standards Committee Firefighting and Fire Protection) at DIN e. V., Burggrafenstr. 6, 10787 Berlin. DIN 14811/A1:2012-03 8 I.1.3 Conditioning of test pieces Prior to testing, the test
43、 pieces shall be stored in dry condition for 24 h at a room temperature of 20 C to 22 C. No special conditioning in a drying cabinet is necessary. I.2 Apparatus and accessories I.2.1 Burning chamber The burning chamber shall be closed on all sides and shall conform to Figure I.1. The burning chamber
44、 shall be made of stainless steel sheet about 1,5 mm thick. Only the front wall, a horizontally sliding door, is to be made of polymethyl methacrylate (PMMA). The right-hand side wall shall be of two steel sheets that are slid into place from above through grooves. A semi-circle is cut into the uppe
45、r edge of one piece and the lower edge of the other piece in such a fashion that the opening formed when the two pieces are placed together encloses the inserted hose as tightly as possible. Wall sections forming different-sized openings shall be provided for each hose type tested. Dimensions in mil
46、limetres General tolerance: ISO 2768 v Key 1 Sliding door of polymethyl methacrylate (PMMA) Figure I.1 Burning chamber (shown with a right-hand side wall with an opening for a C 52 hose) DIN 14811/A1:2012-03 9 I.2.2 Burner A permanently installed burner for a propane gas-air mixture as shown in Figu
47、re I.2 shall serve as the flame source. The forced air supply pre-mixing burner comprises a two chamber mixer and a three chamber nozzle. The burner shall be operated with propane gas as in DIN 51622 and compressed air as in DIN EN 12021. Dimensions in millimetres General tolerance: ISO 2768 f Key 1
48、 Three chamber nozzle 2 Two chamber mixer Figure I.2 Burner DIN 14811/A1:2012-03 10 I.2.3 Protective shield The arrangement of the burner in the burning chamber and the periphery shall be as in Figure I.3. The protective shield is situated above the burner and can be pivoted above the flame to prote
49、ct the hose directly before the test begins. The protective shield is comprised of a metal frame in which a square piece of appropriate insulation material (e.g. vermiculite) measuring 95 mm null 95 mm null 12 mm is placed. Dimensions in millimetres General tolerance: ISO 2768 m Key 1 Water inlet 2 Hose 3 Protective shield 4 Position of thermocouple 5 Compressed air as in DIN EN 12021 6 Propane gas C3H8 as in DIN 51622 7 Pivotin
