08-30168618-DC.pdf

a Date: 7 January 2008 Origin: International Latest date for receipt of comments: 30 April 2008 Project no.: 2007/01800 Responsible committee: SME/32/-/3 Ships and marine technology - Piping and machinery Interested committees: Title: Draft BS ISO 28523 Ships and marine technology Sampling from lubricating oil and hydraulic oil systems Guidance for sampling for determination of cleanliness and solid particle contamination Supersession information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 30 April 2008. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. 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Direct tel: 020 8996 7773 Responsible Committee Secretary: Ms Sue Barden (BSI) E-mail: sue.bardenbsi-global.com Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 08/30168618 DC Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:57:49 GMT+00:00 2008, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on international discussions in which the UK has taken an active part. Your comments on this draft are invited and will assist in the preparation of the consequent standard. Comments submitted will be reviewed by the relevant BSI committee before sending the consensus UK vote and comments to the international secretariat, which will then decide appropriate action on the draft and the comments received. If no comments are received to the contrary, then the UK will approve this draft. 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Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:57:49 GMT+00:00 2008, Uncontrolled Copy, (c) BSI THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH. IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS. RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. DRAFT INTERNATIONAL STANDARD ISO/DIS 28523 © International Organization for Standardization, 2007 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION ISO/TC 8/SC 3 Voting begins on: 2007-12-21 Secretariat: ANSI Voting terminates on: 2008-05-21 Ships and marine technology Lubricating and hydraulic oil systems Guidance for sampling to determine cleanliness and particle contamination Navires et technologie maritime Les systèmes lubrifiant et hydraulique de pétrole Directives pour essais pour déterminer la contamination de propreté et particule ICS 47.020.99 In accordance with the provisions of Council Resolution 15/1993 this document is circulated in the English language only. Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué en version anglaise seulement. To expedite distribution, this document is circulated as received from the committee secretariat. 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Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:57:49 GMT+00:00 2008, Uncontrolled Copy, (c) BSI ISO/DIS 28523 © ISO 2007 All rights reserved iii Contents Page Foreword.iv 1 Scope.1 2 Normative references.1 3 Dynamic sampling1 4 Static sampling .4 5 Sample bottles 5 6 Automatic particle counting.6 Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:57:49 GMT+00:00 2008, Uncontrolled Copy, (c) BSI ISO/DIS 28523 iv © ISO 2007 All rights reserved 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 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 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 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 International 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 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 28523 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee SC 3, Piping and machinery. This second/third/. edition cancels and replaces the first/second/. edition (), clause(s) / subclause(s) / table(s) / figure(s) / annex(es) of which has / have been technically revised. Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:57:49 GMT+00:00 2008, Uncontrolled Copy, (c) BSI DRAFT INTERNATIONAL STANDARD ISO/DIS 28523 © ISO 2007 All rights reserved 1 1 Scope This standard specifies methods for dynamic and static extraction of fluid samples from lubricating and hydraulic oil systems. A correct execution of the sampling is essential when analysing fluids from lubricating and hydraulic oil systems. In order to achieve reliable and comparable analysis results, the sampling must be performed under defined conditions and operating environment. When the system has reached its operating temperature, a representative sample is extracted from where the fluid is in a turbulent flow condition. This method is called dynamic sampling. If this is not possible, the sample can be extracted from the system tank. This method is called static sampling. NOTE It should be noted that particles being 20 m settle quickly during this method of sampling. This standard specifies methods for both dynamic and static sampling in connection with collection in bottles. For extraction of samples through a filtration kit for comparison with “Master Slides”, reference is made to the manuals from the suppliers of such equipment. 2 Normative references ISO 3722, Hydraulic fluid power Fluid sample containers Qualifying and controlling cleaning methods ISO 4021, Hydraulic fluid power Particulate contamination analysis Extraction of fluid samples from lines of an operating system ISO 11171, Hydraulic fluid power - Calibration of automatic particle counters for liquids 3 Dynamic sampling 3.1 Rigging the sampling device If it is possible to mount the sampling device on a section of the system pipe with a turbulent flow, a sampling device as specified in Figure 1 is used. If this is not possible, a turbulent flow can be achieved by inserting a T-piece in the pipe and mounting the equipment on the T-piece (as shown in Figures 1 and 2). The sampling equipment includes a capillary tube. The internal diameter and total length of the tubing is chosen with the object of achieving an appropriate flow velocity during the sampling. However, in accordance with ISO 4021, the internal diameter must be a minimum 1,25 mm. Ships and marine technology Lubricating and hydraulic oil systems Guidance for sampling to determine cleanliness and particle contamination Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:57:49 GMT+00:00 2008, Uncontrolled Copy, (c) BSI ISO/DIS 28523 2 © ISO 2007 All rights reserved 3.2 Sampling Observe the following procedures for sampling: a) Extract the sample from a warm system. b) Thoroughly wipe off the capillary tubing with a lint-free cloth. c) Activate the ball valve/measuring coupling to full flow. d) Minimum 0,5 l of fluid must pass through before the actual sample is extracted. e) Collect the desired sample without adjusting the ball valve/measuring coupling. The sample volume should make up a minimum 50% and maximum 80% of the volume of the sample container. If an automatic particle counter is used, a minimum 0,4 l should be extracted. f) Remove the sample bottle while the fluid is still flowing. g) Close the sample bottle immediately after. h) Close the ball valve/measuring coupling. Figure 1 Dynamic sampling device in accordance with ISO 4021 Components 1 Tee fitting 2 coupling with check valve 3 cap 4 cap 5 coupling without check valve 6 ball plug valve 7 fitting with capillary hose Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 06:57:49 GMT+00:00 2008, Uncontrolled Copy, (c) BSI ISO/DIS 28523 © ISO 2007 All rights reserved 3 Figure 2 Dynamic sampling device in connection with measuring coupling Components 1 Tee fitting 2 reducing nipple 3 fitting with capillary hose 4 cap The choice between Figure 1 and Figure 2 configurations depends on the needs of the user. See Table 1 below for advantages and disadvantages. Table 1 Figure no. Advantage