1、BRITISH STANDARD BS EN ISO 20783-2:2003 Incorporating Corrigendum No. 1 Petroleum and related products Determination of emulsion stability of fire-resistant fluids Part 2: Fluids in category HFB The European Standard EN ISO 20783-2:2003 has the status of a British Standard ICS 75.120 BS EN ISO 20783
2、-2:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 3 March 2004 BSI 1 April 2004 ISBN 0 580 43462 1 National foreword This British Standard is the official English language version of EN ISO 20783-2:2003. It is identical with ISO 20783-2
3、:2003. The UK participation in its preparation was entrusted to Technical Committee PTI/13, Petroleum testing and terminology, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards wh
4、ich implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This public
5、ation does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible internationa
6、l/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO titl
7、e page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 12, the Annex ZA page and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 15059 Corrigendum No. 1
8、 1 April 2004 Corrected EN ISO foreword page and incorporation of Annex ZAEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO207832 December2003 ICS75.120 Englishversion PetroleumandrelatedproductsDeterminationofemulsion stabilityoffireresistantfluidsPart2:FluidsincategoryHFB (ISO207832:2003) Ptrol
9、eetproduitsconnexesDterminationdelastabilit dmulsionsdefluidesdifficilementinflammablesPartie2: FluidesdecatgorieHFB(ISO207832:2003) MinerallerzeugnisseundverwandteProdukte BestimmungderEmulsionsstabilittvonschwer entflammbarenFlssigkeitenTeil2:HFBFlssigkeiten (ISO207832:2003) ThisEuropeanStandardwa
10、sapprovedbyCENon2December2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicatio
11、ntotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethen
12、ationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMI
13、TEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO207832:2003EINESO02387:2002(3E) 2 CORRECTED20040303 Foreword Thisdocument(ENISO207832:2003)hasbeenpreparedbyTechnicalCommitteeISO/TC28
14、 “Petroleumproductsandlubricants“incollaborationwithTechnicalCommitteeCEN/TC19 “Petroleumproducts,lubricantsandrelatedproducts“,thesecretariatofwhichisheldbyNEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthelatestbyJune2004,an
15、dconflictingnational standardsshallbewithdrawnatthelatestbyJune2004. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Irel
16、and,Italy, Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerlandand theUnitedKingdom. Endorsementnotice ThetextofISO207832:2003hasbeenapprovedbyCENasENISO207832:2003withoutany modifications. NOTENormativereferencestoInternationalStandardsarelistedinAnnexZA(normative). ENISO2
17、07832:2003 Reference number ISO 20783-2:2003(E) OSI 3002INTERNATIONAL STANDARD ISO 20783-2 First edition 2003-12-15 Petroleum and related products Determination of emulsion stability of fire-resistant fluids Part 2: Fluids in category HFB Ptrole et produits connexes Dtermination de la stabilit dmuls
18、ion de fluides difficilement inflammables Partie 2: Fluides de catgorie HFB ENISO207832:2003IS-38702 O2:(3002E) DPlcsid Fremia ihTs PDF file mya ctnoian emdebt dedyfepcaes. In ccacnadrow eitA hebods licnesilop gnic,y tihs file mirp eb yatnde iv roweb detu slahl ton ide ebtlnu deess teh typfecaes wih
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23、r esedevrENISO207832:2003IS-38702 O2:(3002E) I SO 3002 All irthgs ersedevr iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Method A Determination of stability of HFB fluids at ambient temperature 2 3.1 Principle . 2 3.2 Reagents 2 3.3 Apparatus. 2 3.4 Samples 2 3.5 Procedure. 4 3
24、.6 Calculation. 5 3.7 Precision 6 4 Method B Determination of stability of HFB fluids at medium temperature 7 4.1 Principle . 7 4.2 Apparatus. 7 4.3 Samples 7 4.4 Procedure. 7 4.5 Expression of results 8 4.6 Precision 8 5 Method C Determination of stability of HFB.LT fluids at low temperature. 9 5.1
25、 Principle . 9 5.2 Reagent 9 5.3 Apparatus. 9 5.4 Samples 9 5.5 Procedure. 9 5.6 Calculation. 10 5.7 Precision 11 6 Test report 11 Bibliography . 12 ENISO207832:2003IS-38702 O2:(3002E) iv I SO 3002 All irthgs ersedevrForeword ISO (the International Organization for Standardization) is a worldwide fe
26、deration of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that com
27、mittee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accord
28、ance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard require
29、s approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 20783-2 was prepared by Technica
30、l Committee ISO/TC 28, Petroleum products and lubricants. ISO 20783 consists of the following parts, under the general title Petroleum and related products Determination of emulsion stability of fire-resistant fluids: Part 1: Fluids in category HFAE Part 2: Fluids in category HFB ENISO207832:2003INT
31、ENRATIONAL TSANDADR IS-38702 O2:(3002E)I SO 3002 All irthgs ersedevr 1Petroleum and related products Determination of emulsion stability of fire-resistant fluids Part 2: Fluids in category HFB WARNING The use of this part of ISO 20783 may involve hazardous materials, operations and equipment. This p
32、art of ISO 20783 does not purport to address all of the 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 pa
33、rt of ISO 20783 specifies three test methods to assess the stability of emulsions within the category HFB, as defined in ISO 6743-4 5 . Method A describes a method for the determination of stability during storage at ambient temperature (20 2) C and is applicable to HFB and HFB.LT 1)fluids. Method B
34、 describes a method for the determination of stability during storage at medium temperature (70 2) C and is again applicable to HFB and HFB.LT 1)fluids. Method C describes a method for the determination of stability during storage at low temperature ( 10 2) C and is applicable only to HFB.LT 1)fluid
35、s. 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. ISO 648:1977, Laborator
36、y glassware One-mark pipettes ISO 3170: 2) , Petroleum liquids Manual sampling ISO 3696:1987, Water for analytical laboratory use Specification and test methods ISO 3733:1999, Petroleum products and bituminous materials Determination of water Distillation method 1) LT is the designation for low temp
37、erature applications. 2) To be published. (Revision of ISO 3170:1988) ENISO207832:2003IS-38702 O2:(3002E) 2 I SO 3002 All irthgs ersedevr3 Method A Determination of stability of HFB fluids at ambient temperature 3.1 Principle A graduated measuring cylinder is filled with 450 ml of emulsion above a 5
38、0 ml layer of water and is stored for 1 000 h at ambient temperature. At the end of this time, 50-ml sub-samples are pipetted from two defined levels in the upper and lower regions of the emulsion column. The water contents of these test portions are compared with the measured initial water content.
39、 Measurements of the surface oil layer volume and the volume of accumulated free water are also made. 3.2 Reagents 3.2.1 Water-free petroleum spirit, (see ISO 1998-1:1998 2 , 1.20.146) with a boiling range of 90 C to 160 C. 3.2.2 Water, meeting the requirements of Grade 3 of ISO 3696:1987. 3.2.3 Rea
40、gents for distillation procedure, as specified in ISO 3733, for the determination of water. 3.3 Apparatus 3.3.1 Graduated measuring cylinders, of 500 ml capacity, with a scale length from the 50 ml to 500 ml graduations of (250 25) mm and an overall height of approximately 390 mm. Cylinders conformi
41、ng to ISO 4788 4are suitable. 3.3.2 Pipettes, of 50 ml capacity, conforming to ISO 648. 3.3.3 Polyethylene film, approximately 0,05 mm thick. 3.3.4 Round-bottomed flasks, of 500 ml capacity, used as distillation vessels for the determination of water in accordance with ISO 3733. 3.3.5 Sampling jig,
42、consisting of a retort stand, clamps and set square as shown in Figure 1. 3.3.6 Stop clock. 3.3.7 Wash bottle. 3.3.8 Apparatus for distillation procedure, as specified in ISO 3733, for the determination of water. 3.4 Samples 3.4.1 Unless otherwise specified, samples of fluid shall be obtained using
43、the procedures specified in ISO 3170. 3.4.2 A fluid sample of no less than 1,5 l in volume shall be supplied for the test. Care shall be taken to ensure that the sample is representative of the bulk. ENISO207832:2003IS-38702 O2:(3002E) I SO 3002 All irthgs ersedevr 3Dimensions in millimetres Key 1 r
44、etort stand 2 Stop C 3 Clamp B 4 500 ml measuring cylinder 5 set square for external alignment of pipette 6 Clamp A 7 50 ml pipette in sampling position aTo vacuum pump Figure 1 Sampling apparatus ENISO207832:2003IS-38702 O2:(3002E) 4 I SO 3002 All irthgs ersedevr3.5 Procedure 3.5.1 General Mix the
45、sample thoroughly by agitation in a vessel having a capacity that is substantially greater than the sample size. 3.5.2 Initial water content of the emulsion Take two sub-samples of 50 ml each from the sample (3.4.2) using a pipette (3.3.2). Drain each 50 ml test portion from the pipette into a clean
46、, dry 500 ml round-bottomed flask (3.3.4). Rinse the residual fluid from the pipette into the flask using several charges of petroleum spirit (3.2.1) from a wash bottle (3.3.7). A total volume of approximately 100 ml of petroleum spirit shall be used for this operation. Drain the pipette thoroughly
47、to ensure that all of the sub-sample is transferred to the round-bottomed flask. Use the sub-sample as the test portion specified in ISO 3733 and subject each of them to the distillation procedure given in ISO 3733 to obtain two determinations of the initial percentage water content (volume fraction), i , of the emulsion to the nearest 0,2 %. Some emulsions contain water-soluble liquid, which distils over during the determination of the water content (volume fraction, %) by the distillation method. When such water-soluble liquid is present, the result of
