1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58circuits Part 3: Method of extraction of contaminants by pressure rinsingICS 13.040.50; 43.180Road
2、vehicles Cleanliness of components of fluid BRITISH STANDARDBS ISO 16232-3:2007BS ISO 16232-3:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 June 2007 BSI 2007ISBN 978 0 580 50926 1Amendments issued since publicationAmd. No. Date Comm
3、entscontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of ISO 16232-3:2007.The UK participation in its preparation was en
4、trusted 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 include all the necessary provisions of a Reference numberISO 16232-3:2007(E)INTERNATIONAL STANDARD
5、ISO16232-3First edition2007-06-01Road vehicles Cleanliness of components of fluid circuits Part 3: Method of extraction of contaminants by pressure rinsing Vhicules routiers Propret des composants des circuits de fluide Partie 3: Mthode dextraction des contaminants par aspersion BS ISO 16232-3:2007i
6、i iiiContents 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 Clean-up filter 2 5.6 Vacuum suction system. 2
7、5.7 Collection equipment . 2 5.8 Sampling containers. 3 5.9 Environmental conditions 3 5.10 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 6.3.1 Sources of blank contamination . 6 6.3.2 System blank test . 7 6.3.3 Bla
8、nk value 7 6.4 Component routine test . 8 7 Analysis of the extraction liquid . 8 8 Presentation of results. 9 Annex A (informative) Synopsis of the extraction procedure set-up and validation 10 Annex B (informative) Example of data sheet for the extraction procedure by pressure rinsing . 11 Annex C
9、 (informative) Synopsis of the routine test procedure. 14 Bibliography . 15 BS ISO 16232-3:2007iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally ca
10、rried 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 committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work
11、. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. 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 Intern
12、ational Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for 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
13、 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 16232-3 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 5, Engine tests. ISO 16232 consists of the following parts, under
14、 the general title Road vehicles Cleanliness of components of fluid circuits: Part 1: Vocabulary Part 2: Method of extraction 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: Me
15、thod of extraction of contaminants on functional test bench Part 6: Particle mass determination by gravimetric analysis Part 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 e
16、xtinction particle counter Part 10: Expression of results BS ISO 16232-3:2007vIntroduction The presence of particulate contamination 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
17、 assembly processes will cause a substantial increase in the wear rates of the system during the initial run-up and early life, 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 bui
18、ld phase is necessary, and measurement of particulate contaminants is the basis of control. The ISO 16232 series has been drafted 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
19、of a single or a few critically sized particles. Consequently, ISO 16232 requires the analysis of the total volume of extraction 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 dev
20、eloped by ISO/TC 131/SC6. These International Standards have been extended, modified and new ones have been developed to produce 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
21、 16232 defines procedures for the removal and collection of contaminants from components by rinsing with a jet of test liquid 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.
22、g. rinsing pressure, volume of liquid, type of jet). All parameters should be included in the cleanliness specification and in the inspection document and should be rigorously followed by the test staff. BS ISO 16232-3:2007blank1Road vehicles Cleanliness of components of fluid circuits Part 3: Metho
23、d of extraction of contaminants by pressure rinsing 1 Scope This part of ISO 16232 describes the principles of extraction of contaminants from a component by pressure rinsing. It is preferably applied to components of which the surface to be examined is accessible by a jet of test liquid. This metho
24、d can be employed on its own or in association with other methods 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 mate
25、rials. It covers the amount and the nature of residual particles 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. Fo
26、r undated references, the latest edition of the referenced document (including any amendments) applies. ISO 16232-1, Road vehicles Cleanliness of components of fluid circuits Part 1: Vocabulary ISO 16232-2, Road vehicles Cleanliness of components of fluid circuits Part 2: Method of extraction of con
27、taminants by agitation ISO 16232-4, Road vehicles Cleanliness 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 b
28、ench ISO 16232-6, Road vehicles Cleanliness of components 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 Clean
29、liness of components of fluid circuits Part 8: Particle nature 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
30、 of components of fluid circuits Part 10: Expression of results BS ISO 16232-3:20072 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 from the controlled surface of the component by pressure ri
31、nsing with a jet of test liquid which carries away the particles 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 with all the materials in the comp
32、onent, 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 (w 5 mm2/s) and having the capability of removing (or dissolving) oil and grease is recommended. It should be filtered to attain the requi
33、rements 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 the place of sampling to the plac
34、e 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 dispenser The pressure liquid dispenser
35、 is a device that provides clean test liquid specified in 5.2 at a pressure and flow rate capable of extracting the contaminants in an effective manner. The dispenser can also be used to rinse the test equipment and all other items. 5.5 Clean-up filter If used, a clean-up filter of the test liquid s
36、hall achieve the blank level specified and have a retention capacity such that it does not require replacement too often in order to not introduce particles. 5.6 Vacuum suction system If necessary, use an assembly consisting of a source of vacuum, a vacuum flask previously cleaned and a flexible tub
37、e of suitable dimensions and shape for recovery of the extraction liquid and the contaminants accumulated in the component under examination. 5.7 Collection equipment The collection equipment shall allow effective draining of particles. A conical base is preferred. The collection equipment shall be
38、cleaned to achieve the requirement of 6.3.3. BS ISO 16232-3:20073It is possible for contaminants remaining on the equipment to be transferred 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 befo
39、re use in order to limit contamination from the environment. 5.8 Sampling containers The sampling containers (glassware, etc.) required for transferring the extraction liquid from the collection equipment to the analysis equipment shall be cleaned to achieve the requirements of 6.3.3. 5.9 Environmen
40、tal conditions The cleanliness of the environment where the extraction is performed shall be consistent with the presumed cleanliness of the component to test. This requirement may result in the test being carried out in a laboratory or controlled workplace. The suitability of the environment is val
41、idated when performing the blank test. 5.10 Health and safety 5.10.1 Local Health and Safety procedures shall be followed at all times, any equipment shall be operated in accordance with the manufacturers instruction and personal protection equipment used where appropriate. 5.10.2 Chemicals used in
42、the procedures can be harmful, toxic or flammable. Good laboratory practices shall be observed in the preparation and use of these chemicals. Care shall be taken to ensure compatibility of the chemicals with the materials used (refer to each Material Safety Data Sheet MSDS). Follow the precautions f
43、or safe handling and usage as described in the MSDS available from the supplier. 5.10.3 Volatile liquids; care shall be taken with flammable liquids 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. App
44、ropriate precautions should be taken to avoid inhalation of fumes from these solvents. Always use suitable protective equipment. 5.10.4 Electrical; appropriate care should be applied in the use of electrical power. 5.10.5 Disposal; all liquids and substances shall be disposed of in accordance with l
45、ocal 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 storage 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.
46、 6.1.2 To prevent loss from particles during transport it may be necessary to seal openings of the test components, e.g. with suitable plugs. 6.2 Extraction procedure set-up and validation 6.2.1 The number of components to be analysed shall be chosen so as to measure a significant number of contamin
47、ants, so that it 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 process the extraction procedure should be agreed between parties and included in the inspection document because break-in may alter the components ini
48、tial cleanliness level. BS ISO 16232-3:20074 6.2.3 For active components, it may be necessary to operate them in order to pass the test liquid through during the extraction procedure. In this case, the initial contamination level may be altered. The extraction conditions should be agreed upon betwee
49、n parties and included in the inspection document. 6.2.4 If the particles detached during transportation of the test component and particles from the packaging shall be included in the cleanliness inspection, they shall be collected using the appropriate extraction method (e.g. low pressure rinsing) as agreed upon between parties and included in the inspection document. 6.2.5 The effectiveness of pressure rinsing depends on the following, non-exhaustive list of parameters:
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