1、BRITISH STANDARDBS ISO 16232-2:2007Road vehicles Cleanliness of components of fluid circuits Part 2: Method of extraction of contaminants by agitation ICS 13.040.50; 43.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51
2、g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS ISO 16232-2:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 June 2007 BSI 2007ISBN 978 0 580 50927 8National forewordThis British Standard was published by BSI.
3、 It is the UK implementation of ISO 16232-2:2007.The UK participation in its preparation was entrusted to Technical Committee MCE/22, Engines for road vehicles.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to inclu
4、de all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsReference numberISO 16232-2:2007(E)INTERNATIONAL STANDARD ISO1623
5、2-2First edition2007-06-01Road vehicles Cleanliness of components of fluid circuits Part 2: Method of extraction of contaminants by agitation Vhicules routiers Propret des composants des circuits de fluide Partie 2: Mthode dextraction des contaminants par agitation BS ISO 16232-2:2007ii iiiContents
6、Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Principle. 2 5 Equipment . 2 5.1 General. 2 5.2 Test liquid 2 5.3 Test component container. 2 5.4 Pressure rinsing liquid dispenser. 2 5.5 Vacuum suction system. 2 5.6 Collection equipment . 2 5.7 Sam
7、pling containers. 3 5.8 Environmental conditions 3 5.9 Health and safety 3 6 Procedure 3 6.1 Handling and storage . 3 6.2 Extraction procedure set-up and validation 3 6.3 Blank test. 6 6.4 Component routine test . 8 7 Analysis of the extraction liquid . 9 8 Presentation of results. 9 Annex A (inform
8、ative) Synopsis of the extraction procedure set-up and validation 10 Annex B (informative) Example of data sheet for the extraction procedure by the agitation method 11 Annex C (informative) Synopsis of the routine test procedure. 14 Bibliography . 15 BS ISO 16232-2:2007iv Foreword ISO (the Internat
9、ional Organization for Standardization) is a worldwide federation 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 bee
10、n established has the right to be represented on that committee. 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 stand
11、ardization. International Standards are drafted in accordance 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
12、 voting. Publication as an International Standard requires 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
13、 such patent rights. ISO 16232-2 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 5, Engine tests. ISO 16232 consists of the following parts, under the general title Road vehicles Cleanliness of components of fluid circuits: Part 1: Vocabulary Part 2: Method of extractio
14、n of contaminants by agitation Part 3: Method of extraction of contaminants by pressure rinsing Part 4: Method of extraction of contaminants by ultrasonic techniques Part 5: Method of extraction of contaminants on functional test bench Part 6: Particle mass determination by gravimetric analysis Part
15、 7: Particle sizing and counting by microscopic analysis Part 8: Particle nature determination by microscopic analysis Part 9: Particle sizing and counting by automatic light extinction particle counter Part 10: Expression of results BS ISO 16232-2:2007vIntroduction The presence of particulate conta
16、mination in a fluid system is acknowledged to be a major factor governing the life and reliability of that system. The presence of particles residual from the manufacturing and assembly processes will cause a substantial increase in the wear rates of the system during the initial run-up and early li
17、fe, and may even cause catastrophic failures. In order to achieve reliable performance of components and systems, control over the amount of particles introduced during the build phase is necessary, and measurement of particulate contaminants is the basis of control. The ISO 16232 series has been dr
18、afted to fulfil the requirements of the automotive industry, since the function and performance of modern automotive fluid components and systems are sensitive to the presence of a single or a few critically sized particles. Consequently, ISO 16232 requires the analysis of the total volume of extrac
19、tion liquid and of all contaminants collected using an approved extraction method. The ISO 16232 series has been based on existing ISO International Standards such as those developed by ISO/TC 131/SC6. These International Standards have been extended, modified and new ones have been developed to pro
20、duce a comprehensive suite of International Standards to measure and report the cleanliness levels of parts and components fitted to automotive fluid circuits. This part of ISO 16232 defines procedures for the removal and collection of contaminants from components using a moving test liquid (agitati
21、on) so that their cleanliness can be evaluated. The cleanliness level of a component, as determined according to this method, depends to a large extent on the test parameters (e.g. type of agitation, duration of agitation, choice of test liquid, etc). All parameters should be included in the cleanli
22、ness specification and in the inspection document and should be rigorously followed by the test staff. BS ISO 16232-2:2007blank1Road vehicles Cleanliness of components of fluid circuits Part 2: Method of extraction of contaminants by agitation 1 Scope This part of ISO 16232 describes the principles
23、of extraction of contaminants from a component by the agitation method. It is preferably applied to components that are hollow and are suited to being agitated by an operator or by an appropriate mechanical device. This agitation method can be employed on its own or in association with other methods
24、 of extraction described in the ISO 16232 series. Unless otherwise specified, this part of ISO 16232 deals with particulate contamination only. It does not, therefore, cover appearance defects or contamination by liquid or gaseous materials. It covers the amount and the nature of residual particles
25、resulting from manufacturing processes and from the environment. 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 docume
26、nt (including any amendments) applies. ISO 16232-1, Road vehicles Cleanliness of components of fluid circuits Part 1: Vocabulary ISO 16232-3, Road vehicles Cleanliness of components of fluid circuits Part 3: Method of extraction of contaminants by pressure rinsing ISO 16232-4, Road vehicles Cleanlin
27、ess of components of fluid circuits Part 4: Method of extraction of contaminants by ultrasonic techniques ISO 16232-5, Road vehicles Cleanliness of components of fluid circuits Part 5: Method of extraction of contaminants on functional test bench ISO 16232-6, Road vehicles Cleanliness of components
28、of fluid circuits Part 6: Particle mass determination by gravimetric analysis ISO 16232-7, Road vehicles Cleanliness of components of fluid circuits Part 7: Particle sizing and counting by microscopic analysis ISO 16232-8, Road vehicles Cleanliness of components of fluid circuits Part 8: Particle na
29、ture determination by microscopic analysis ISO 16232-9, Road vehicles Cleanliness of components of fluid circuits Part 9: Particle sizing and counting by automatic light extinction particle counter ISO 16232-10:2007, Road vehicles Cleanliness of components of fluid circuits Part 10: Expression of re
30、sults BS ISO 16232-2:20072 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 16232-1 apply. 4 Principle The contaminants are extracted by partially filling the component with a known volume of test liquid, sealing its openings, and agitating it in orde
31、r to extract the particles from the controlled surfaces and suspend them in the extraction liquid for subsequent analysis. 5 Equipment 5.1 General The equipment used shall neither alter nor modify the size distribution of the extracted particles. 5.2 Test liquid The test liquid shall be compatible w
32、ith all the materials in the component, with the liquid used in the final system and with the test equipment, including seals, membrane filter and clean-up filter. A test liquid of low viscosity (u 5 mm2/s) and having the capability of removing (or dissolving) oil and grease is recommended. It shoul
33、d be filtered to attain the requirements of 6.3.3. SAFETY PRECAUTIONS In case a tested component will be reclaimed for final use, application of incompatible test liquid may cause hazardous damage 5.3 Test component container A closed container should be used for the transfer of the component from t
34、he place of sampling to the place of particle extraction. This container shall be appropriate to the shape of the component and made of material compatible with the test liquid. Its degree of cleanliness shall comply with the blank requirements specified in 6.3.3. 5.4 Pressure rinsing liquid dispens
35、er The pressure liquid dispenser is a device that provides a clean liquid at a pressure and flow rate capable, in an effective manner, of rinsing residual contaminants from sampling equipment, collection containers, test component and analysis apparatus. NOTE This device can be same as the one used
36、for providing the test liquid. 5.5 Vacuum suction system If necessary, use an assembly consisting of a source of vacuum, a vacuum flask previously cleaned and a flexible tube of suitable dimensions and shape for recovery of the extraction liquid and any particles that have accumulated in the compone
37、nt under examination. 5.6 Collection equipment The collection equipment shall allow effective draining of particles. A conical base is preferred. It shall be cleaned to achieve the requirement of 6.3.3. BS ISO 16232-2:20073It is possible for contaminants remaining on the equipment to be transferred
38、to the sample and thus be erroneously included as part of the particles removed from the component. All collection equipment shall be cleaned and covered before use in order to limit contamination from the environment. 5.7 Sampling containers The sampling containers (glassware, etc.) required for tr
39、ansferring the extraction liquid from the collection equipment to the analysis equipment shall be cleaned to achieve the requirements of 6.3.3. 5.8 Environmental conditions The cleanliness of the environment where the extraction is performed shall be consistent with the presumed cleanliness of the c
40、omponent to test. This requirement may result in the test being carried out in a laboratory or controlled workplace. The suitability of the environment is validated when performing the blank test. 5.9 Health and safety 5.9.1 Local Health and Safety procedures shall be followed at all times, any equi
41、pment shall be operated in accordance with the manufacturers instruction and personal protection equipment used where appropriate. 5.9.2 Chemicals used in the procedures can be harmful, toxic or flammable. Good laboratory practices shall be observed in the preparation and use of these chemicals. Car
42、e shall be taken to ensure compatibility of the chemicals with the materials used (refer to each Material Safety Data Sheet MSDS). Follow the precautions for safe handling and usage as described in the MSDS available from the supplier. 5.9.3 Volatile liquids: care shall be taken with flammable liqui
43、ds to ensure that they are used in accordance with the MSDS, at temperatures below the stated flash point and away from potential sources of ignition. Appropriate precautions should be taken to avoid inhalation of fumes from these solvents. Always use suitable protective equipment. 5.9.4 Electrical:
44、 appropriate care should be applied in the use of electrical power. 5.9.5 Disposal: all liquids and substances shall be disposed of in accordance with local environmental procedures. In the event of spillage it shall be cleaned-up in the manner detailed in the MSDS. 6 Procedure 6.1 Handling and stor
45、age 6.1.1 During handling and storage of test components, it shall be ensured that no contaminants are deposited on or removed from controlled surfaces. 6.1.2 To prevent loss of particles during transport, it may be necessary to seal openings of the test components, e.g. with suitable plugs. 6.2 Ext
46、raction procedure set up and validation 6.2.1 The number of components to be analysed shall be chosen so as to measure a significant amount of contaminants that complies with the requirements for a blank (see 6.2.18, NOTE 3). 6.2.2 If the break-in of the component is part of its manufacturing proces
47、s the extraction procedure should be agreed between parties and included in the inspection document because break-in may alter its initial cleanliness level. 6.2.3 If particles that are detached during transportation of the test component and/or particles from the packaging are to be included in the
48、 cleanliness inspection, as agreed upon between parties, they shall be BS ISO 16232-2:20074 collected using the appropriate extraction method (e.g. low pressure rinsing). This agreement shall be included in the inspection document. 6.2.4 The effectiveness of the agitation method depends on the follo
49、wing, non-exhaustive list of parameters: type of agitation, duration of agitation, choice of test liquid. A synopsis of the operations to perform is given in Annex A. The detailed description of operating conditions and equipment used in application of this standard to fill, agitate and empty the component constitutes the extraction procedure. This procedure shall be established for each component and reported (for an example of an extraction procedure data sheet see Annex B). 6.2.5 If needed for reporting resul
