1、April 2011 Translation by DIN-Sprachendienst.English price group 8No 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 7
2、5.120!$nb(“1756305www.din.deDDIN EN ISO 20783-1Petroleum and related products Determination of emulsion stability of fire-resistant fluids Part 1: Fluids in category HFAE (ISO 20783-1:2011)English translation of DIN EN ISO 20783-1:2011-04Minerallerzeugnisse und verwandte Produkte Bestimmung der Emul
3、sionsstabilitt von schwer entflammbaren Flssigkeiten Teil 1: HFAE-Flssigkeiten (ISO 20783-1:2011)Englische bersetzung von DIN EN ISO 20783-1:2011-04Ptrole et produits connexes Dtermination de la stabilit dmulsions de fluides difficilement inflammables Partie 1: Fluides de catgorie HFAE (ISO 20783-1:
4、2011)Traduction anglaise de DIN EN ISO 20783-1:2011-04SupersedesDIN EN ISO 20783-1:2004-05www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1203.11 DIN EN ISO 20783-1:2011-04 A comma is used as the decimal marker. National foreword T
5、his standard has been prepared by Technical Committee ISO/TC 28 “Petroleum products and lubricants” (Secretariat: ANSI, USA) in collaboration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin” (Secretariat: NEN
6、, Netherlands). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-06-81 AA Spiegelausschuss zu CEN/TC 19 Gasfrmige und flssige Kraft- und Brennstoffe, Schmierstoffe und verwandte Produkte m
7、it minerallstmmiger, synthetischer oder biologischer Herkunft of the Fachausschuss Minerall- und Brennstoffnormung. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 3170 DIN EN ISO 3170 ISO 3696 DIN ISO 3696 Amendments This standard diff
8、ers from DIN EN ISO 20783-1:2004-05 as follows: a) normative references have been updated; b) the former Subclause “5.5 Strong oxidizing solution” has been replaced by “5.5 Dishwater detergent”; c) in Clause 8 “Test conditions”, the test duration has been changed to read “1 week” and “3 weeks” respe
9、ctively. Previous editions DIN EN ISO 20783-1: 2004-05 National Annex NA (informative) Bibliography DIN EN ISO 3170, Petroleum liquids Manual sampling DIN ISO 3696, Water for analytical laboratory use Specification and test methods 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 20783-1 J
10、anuary 2011 ICS 75.120 Supersedes EN ISO 20783-1:2003English Version Petroleum and related products Determination of emulsion stability of fire-resistant fluids Part 1: Fluids in category HFAE (ISO 20783-1:2011) Ptrole et produits connexes Dtermination de la stabilit dmulsions de fluides difficileme
11、nt inflammables Partie 1: Fluides de catgorie HFAE (ISO 20783-1:2011) Minerallerzeugnisse und verwandte Produkte Bestimmung der Emulsionsstabilitt von schwer entflammbaren Flssigkeiten Teil 1: HFAE-Flssigkeiten (ISO 20783-1:2011) This European Standard was approved by CEN on 10 January 2011. CEN mem
12、bers are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on applicati
13、on to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Managem
14、ent Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherland
15、s, Norway, Poland,Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any
16、 form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 20783-1:2011: EContents Page Foreword .3 1 Scope4 2 Normative references4 3 Terms and definitions .4 4 Principle .5 5 Reagents 5 6 Apparatus.5 7 Samples and sampling6 8 Test conditions 7 9 Procedure.7 10 Expression o
17、f results8 11 Precision 8 12 Test report8 Annex A (normative) Composition of test waters .9 Bibliography10 DIN EN ISO 20783-1:2011-04 EN ISO 20783-1:2011 (E) 23 Foreword This document (EN ISO 20783-1:2011) has been prepared by Technical Committee ISO/TC 28 “Petroleum products and lubricants“ in coll
18、aboration with Technical Committee CEN/TC 19 “Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin” the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identic
19、al text or by endorsement, at the latest by July 2011, and conflicting national standards shall be withdrawn at the latest by July 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsi
20、ble for identifying any or all such patent rights. This document supersedes EN ISO 20783-1:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cypr
21、us, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 20
22、783-1:2011 has been approved by CEN as a EN ISO 20783-1:2011 without any modification. DIN EN ISO 20783-1:2011-04 EN ISO 20783-1:2011 (E) WARNING The use of this part of ISO 20783 may involve hazardous materials, operations and equipment. This part of ISO 20783 does not purport to address all of the
23、 safety problems associated with its use. It is the responsibility of the user of this part of ISO 20783 to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1 Scope This part of ISO 20783 specifies a test method to assess the s
24、tability of emulsions within the category HFAE, as defined in ISO 6743-4, made up with waters having clearly-defined concentrations of salts. This method is applicable only to HFAE fluids and not to HFAS fluids. 2 Normative references The following referenced documents are indispensable for the appl
25、ication 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. ISO 3170:2004, Petroleum liquids Manual sampling ISO 3696:1987, Water for analytical laboratory use Specification
26、and test methods 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 stability ability of a fluid to remain of a uniform composition and consistency for extended periods of time, without the formation of layers having compositions different to th
27、e bulk or the separation of components or ingredients 3.2 oil separation production, in the form of droplets or a continuous layer at the surface of the test sample, of a separate phase that has a distinct difference in colour, generally more or less dark yellow, and a distinct phase boundary that s
28、eparates it from the bulk of the test sample 3.3 creaming production of a layer at the surface of the test sample with a white to yellow-white colour, showing a consistency different from the rest of the sample, but not necessarily a distinct separation boundary 4 Principle A sample of emulsifying o
29、il is used to make up an emulsion with a standard test water with which it has been declared to be compatible by the manufacturer. The emulsion is stored for a specified period at a specified temperature. Observations of the stability of the emulsion are made at the end of the storage period. DIN EN
30、 ISO 20783-1:2011-04 EN ISO 20783-1:2011 (E) 45 Reagents 5.1 Demineralized water, meeting the requirements of Grade 2 of ISO 3696. 5.2 Potable water, i.e. tap water, unless the mains supply is contaminated with particulate or high soluble mineral content. 5.3 Acetone (CH3COCH3), general purpose reag
31、ent (GPR). 5.4 Propan-2-ol (isopropyl alcohol) (CH3CHOHCH3), general purpose reagent (GPR). 5.5 Dishwasher detergent, also called glass cleaner detergent or glass washing machine detergent. 6 Apparatus 6.1 Flasks, 150 ml or 200 ml capacity, with graduated necks (Hirschsohn flasks) as shown in Figure
32、 1. 6.2 Cork bungs, to fit the flasks (6.1). 6.3 Oven, capable of maintaining a temperature of (70 2) C or (50 2) C. DIN EN ISO 20783-1:2011-04 EN ISO 20783-1:2011 (E) 5Dimensions in millimetres Figure 1 Hirschsohn flasks 7 Samples and sampling 7.1 Unless otherwise specified, samples of emulsifying
33、oil shall be obtained by the procedures described in ISO 3170. 7.2 Prepare 1 l of emulsion using one of the standard test waters described in Annex A (normally the hardest of the waters with which the manufacturer has declared the emulsifying oil to be compatible). Use the proportion of emulsifying
34、oil recommended by the manufacturer for normal applications. Vigorous shaking by hand is usually sufficient to emulsify the oil, but reference should be made to the suppliers instructions regarding mixing. Other proportions may be used if required and by agreement with the parties concerned. DIN EN
35、ISO 20783-1:2011-04 EN ISO 20783-1:2011 (E) 68 Test conditions On agreement between the parties concerned, one of the following two test conditions shall be chosen: a) Test condition 1: test temperature: (70 2) C test duration: 1 week b) Test condition 2 test temperature: (50 2) C test duration: 3 w
36、eeks 9 Procedure 9.1 Prepare three flasks (6.1) of either capacity. However, if there is reason to expect much separation, it is advisable to use the larger ones. Clean the flasks by washing them with dishwasher detergent (5.5) and rinsing with potable water (5.2) followed by demineralized water (5.
37、1). Allow them to dry, by a final rinse of acetone (5.3) or propan-2-ol (isopropyl alcohol) (5.4) followed by air drying at ambient temperature. Fill the flasks with the prepared emulsion (7.2) to approximately the middle of the graduated scale. Insert a cork bung loosely into each flask. 9.2 Adjust
38、 the temperature of the oven (6.3) to the value required by the test condition chosen. Place the stoppered flasks in the oven and maintain the oven at the temperature and for the test duration required by the chosen test condition. 9.3 Ensure that while the emulsion is being heated to the test tempe
39、rature, the cork bungs are not displaced and the emulsion level does not rise above the top graduation mark of the flasks. When the emulsion has reached the test temperature, ensure that the cork bungs are inserted tightly to prevent evaporation. 9.4 At the end of the test time and while the flasks
40、and their contents are still hot, assess the emulsions in the test flasks visually according to the categories for oil separation and creaming given in Tables 1 and 2. Record the categories observed for each of the test flasks. 9.5 Record the presence of any water separation at the bottom of the fla
41、sks. Table 1 Oil separation (A) Category Description 1A No oil separation 2A Traces of oil (oil drops or a ring of oil) 3A Continuous film of oil (see the Note) NOTE Oil separation at the sides of the flasks is classified under category 2A. Table 2 Creaming (R) Category Description 1R No creaming 2R
42、 1 ml of creaming DIN EN ISO 20783-1:2011-04 EN ISO 20783-1:2011 (E) 710 Expression of results 10.1 Express the result of the assessment of separation as the category designation for which at least two identical results were obtained. If three different categories are obtained, repeat the test. If,
43、upon repeating the test, three different categories are again obtained, report the result as 3A. 10.2 Express the result of the assessment of creaming as the category designation for which at least two identical results were obtained. If three different categories are obtained, repeat the test. If,
44、upon repeating the test, three different categories are again obtained, report the result as 3R. 10.3 Express the result of the assessment of stability as the two category designations for separation and for creaming. EXAMPLE Three individual results for a fluid show categories 1A, 1A, 2A for oil se
45、paration and 2R, 2R, 3R for creaming. The result of the assessment of stability is 1A 2R. 11 Precision The precision of this test method has not been determined. However, for guidance, in co-operative interlaboratory tests carried out at 40 C with a water of hardness equivalent to 400 mg/l of calciu
46、m carbonate, a 95 % confidence limit was established if the total amount of oil separation and creaming was no greater than 0,1 ml after 25 h standing. 12 Test report The test report shall contain at least the following information: a) a reference to this part of ISO 20783, i.e. ISO 20783-1:2010; b)
47、 the type and complete identification of the product tested, including the water type used for the preparation of the emulsion and the percentage concentration of the emulsifying oil used to make up the emulsion tested; c) the test conditions (see Clause 8); d) the result of the assessment of stabil
48、ity; e) the presence or absence of water separation at the bottom of the flasks; f) any deviation, by agreement or otherwise, from the procedure specified; g) the date of the test. DIN EN ISO 20783-1:2011-04 EN ISO 20783-1:2011 (E) 8Annex A (normative) Composition of test waters A.1 General This annex gives the compositions of the four test waters to be used for the assessment of emulsion stability for HFAE-type fluids. When test waters are stored, protection should be include
