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1、BRITISH STANDARD BS3900-A8: 1986 BS6664-1: 1986 ISO1516:1981 Danger class: closed cup Methods of test for Paints Part A8: Test for flash/no flash (closedcup equilibrium method) Flashpoint of petroleum and related products Part 1: Method of test for flash/no flash (closed cup equilibrium method) ISO

2、title: Paints, varnishes, petroleum and related products Flash/no flash test Closed cup equilibrium method UDC 667.612:536.468:543.873BS3900-A8:1986 BS 6664-1:1986 This British Standard, having been prepared under the directionof the Petroleum Standards Committee and the Pigments, Paints and Varnish

3、esStandards Committee,was published underthe authority of the Board ofBSI and comes into effect on 28February1986 BSI04-1999 First published, as BS3900-A8, September1968 First revision February1976 Second revision, jointly with BS6664-1, February1986 The following BSI references relate to the work o

4、n this standard: Committee reference PTC/13 and PVC/10 Draft for comment79/53333DC ISBN 0 580 14785 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Petroleum Standards Committee (PTC/-) and the Pigments, Paints and Varnishes Standards

5、Committee (PVC/-) to Technical Committees PTC/13 and PVC/10, upon which the following bodies were represented: British Gas Corporation Chemical Industries Association Electricity Supply Industry in England and Wales Greater London Council Health and Safety Executive Institute of Metal Finishing Inst

6、itute of Petroleum Ministry of Defence Oil and Colour Chemists Association Paint Research Association Paintmakers Association of Great Britain Ltd. Titanium Pigment Manufacturers Technical Committee Coopted member Amendments issued since publication Amd. No. Date of issue CommentsBS3900-A8:1986 BS66

7、64-1:1986 BSI 04-1999 i Contents Page Committees responsible Inside front cover National foreword ii 0 Introduction 1 1 Scope and field of application 1 2 References 1 3 Principle 1 4 Apparatus 1 5 Sampling and sample treatment 2 6 Procedure 3 7 Precision 3 8 Test report 3 Annex A Suitable closed cu

8、ps specified in standards 4 Annex B Sampling procedures 4 Figure Closed cup, with fitted stirrer (see4.1), immersed in the water-bath 2 Publications referred to Inside back coverBS3900-A8:1986 BS 6664-1:1986 ii BSI 04-1999 National foreword These Parts of BS3900 and BS6664 have been prepared under t

9、he direction of the Petroleum Standards Committee and the Pigments, Paints and Varnishes Standards Committee. They are identical with ISO1516-1981 “Paints, varnishes, petroleum and related products Flash/no flash test Closed cup equilibrium method”, published by the International Organization for St

10、andardization (ISO). ISO1516 was prepared as a result of discussions in ISO Technical Committee28, Petroleum products and lubricants, and ISO Technical Committee35, Paints and varnishes, in which the UK participated. This Part of BS3900 supersedes BS3900-A8:1976, which is withdrawn. This revision co

11、ntains only minor technical changes from the previous edition of BS3900-A8, and it essentially constitutes an editorial revision to enable the test procedure which was applicable to paints, varnishes and related products to be equally applicable to petroleum and similar products. To ensure that this

12、 additional applicability is not overlooked by its publication within BS3900, covering methods of test for paints, this standard is also published as Part1 of BS6664, covering flashpoint of petroleum and related products. Initially BS6664 will consist of four Parts which are identical with four inte

13、rnational standards prepared jointly by ISO/TC28 and ISO/TC35, which correspond as follows: Additional Parts may eventually be added to BS6664, if appropriate. Other British Standard methods for the determination of flashpoint 1)of petroleum and related materials include the following: BS2000, Metho

14、ds of test for petroleum and its products. BS2000-33, Flash point by the Abel apparatus (Statutory method: Petroleum (Consolidation) Act1928). BS2000-34, Flash point by Pensky-Martens closed tester. BS2000-35, Flash point (open) and fire point of petroleum products by the Pensky-Martens apparatus. B

15、S2000-113, Flash point (closed) of cutback bitumen. BS2000-170, Flash point by the Abel apparatus (non-statutory method). International standard Corresponding British Standard BS3900 Methods of test for paints BS6664 Flashpoint of petroleum and related products ISO1516-1981 Part A8:1986 Test for fla

16、sh/no flash (closed cup equilibrium method) Part1:1986 Method of test for flash/no flash (closed cup equilibrium method) ISO1523-1983 Part A9:1986 Determination offlashpoint (closed cup equilibrium method) Part2:1986 Method for determination of flashpoint (closed cup equilibrium method) BS3900 Metho

17、ds of test for paints BS6664 Flashpoint of petroleum and related products ISO3679-1983 Part A14:1986 Determination of flashpoint (rapid equilibrium method) Part4:1986 Method for determination of flashpoint (rapid equilibrium method) ISO3680-1983 Part A13:1986 Test for flash/no flash (rapid equilibri

18、um method) Part3:1986 Method of test for flash/no flash (rapid equilibrium method) 1) In this standard the term “flashpoint” has been used as a single word to maintain the identity with ISO1516. In other British Standards such as BS2000 and BS4689 (identical with ISO2592) the term has been used as t

19、wo words. No difference is implied by this difference in usage which has arisen from the separate development of these two groups of standard.BS 3900-A8:1986 BS 6664-1:1986 BSI 04-1999 iii BS4689, Method for determination of flash and fire points to petroleum products: Cleveland open cup method. It

20、has been assumed in the drafting of this British Standard that it will be used and applied by those who are appropriately qualified and experienced. Terminology and conventions. The text of the international standard has been approved as suitable for publication as a British Standard without deviati

21、on. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal

22、marker. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard” and wherever the identification “ISO1516” appears it should be read as either “BS3900-A8” or “BS6664-1”. There is no British Standard corresponding to ISO3171-1975 2) . T

23、he Technical Committee PTC/13 has reviewed the provisions of ISO3171 to which reference is made inB.2 and has decided that they are acceptable for use in conjunction with this standard. With reference to Annex A, the British Standards referred to have been withdrawn and superseded by the following P

24、arts of BS2000 (see paragraph4), which are technically equivalent to the withdrawn British Standards: BS3442 superseded by BS2000-33 and BS 2000 170; BS2839 superseded by BS2000-34. Cross-references International standard Corresponding British Standard BS3900 Methods of test for paints ISO1512-1974

25、Part A1:1970 Sampling (Technically equivalent) ISO1513-1980 Part A2:1983 Examination and preparation of samples for testing (Identical) ISO1523-1983 Part A9:1986 aDetermination of flashpoint (closed cup equilibrium method) (Identical) ISO3170-1975 b BS3195 Methods for sampling petroleum products Par

26、t1:1978 Liquid hydrocarbons manual sampling (Identical) ISO3680-1983 BS3900 Methods of test for paints Part A13:1986 cTest for flash/no flash (rapid equilibrium method) (Identical) a Also numbered as BS6664-2 (see paragraph3). b In revision. c Also numbered as BS6664-3 (see paragraph3). 2) Also numb

27、ered as BS6664-3 (see paragraph3).BS3900-A8:1986 BS 6664-1:1986 iv BSI 04-1999 Additional information. In using this standard as Part of BS3900 it may be helpful to refer to the general information in the Introduction to BS3900, issued separately. A British Standard does not purport to include all t

28、he necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi toiv, p

29、ages1to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.BS3900-A8:1986 BS 6664-1:1986 BSI 04-1999 1 0 Introduction This International Standard

30、 sets out one of two methods for carrying out the flash/no flash test for paints, varnishes, petroleum and related products, and it should be read in conjunction with ISO3680 when selecting a method. This method of test does not determine the flashpoint of the product under test, but merely its beha

31、viour at the selected equilibrium temperature as may be required to comply with laws or regulations relating to the storage, transport and use of flammable products. For this purpose it is unnecessary to determine the exact flashpoint but it is necessary to determine whether or not flashing occurs a

32、t a single given temperature. By the procedure specified, differences between test apparatus of various standard designs are minimized by ensuring that the test is carried out only when the product under test and the air/vapour mixture above it in the test vessel are exactly in temperature equilibri

33、um. NOTEThe determination of the exact flashpoint using the same equipment is given in ISO1523. 1 Scope and field of application This International Standard specifies a method to determine if a flammable material such as a paint, varnish, paint binder, solvent, petroleum or a related product, when m

34、aintained at a selected equilibrium temperature and under the conditions of the test, gives off sufficient flammable vapour at this temperature to cause ignition on application of an external source of flame applied in a standard manner. The method is suitable for use over the temperature range5 to6

35、5 C, although some of the apparatus listed in Annex A cannot cover all of this range using the thermometer supplied with the apparatus. The procedure also makes allowance for deviations from standard atmospheric pressure. 2 References ISO1512, Paints and varnishes Sampling. ISO1513, Paints and varni

36、shes Examination and preparation of samples for testing. ISO1523, Paints, varnishes, petroleum and related products Determination of flashpoint Closed cup equilibrium method. 3) ISO3170, Petroleum products Liquid hydrocarbons Manual sampling. ISO3171, Petroleum products Liquid hydrocarbons Automatic

37、 pipeline sampling. ISO3680, Paints, varnishes, petroleum and related products Flash/no flash test Rapid equilibrium method. 3 Principle The test portion is heated in a suitably designed closed cup in a suitable water-bath. The ignition trial is carried out after the test portion has been maintained

38、 under equilibrium conditions for atleast10 min at the selected equilibrium temperature. This procedure ensures that the air/vapour space above the test portion has attained the saturation concentration of flammable vapour before the ignition trial is performed. The test report records whether the t

39、est portion flashed or did not flash. 4 Apparatus 4.1 Test cup: A closed cup with an internal level indicator; the closed cups specified in a number of national standards satisfy the necessary requirements (see Annex A). If a stirrer is fitted to the test cup used, it may be operated during the heat

40、ing-up period but shall be stopped during the ignition trial. If a stirrer originally fitted to the test cup is removed, the aperture in the cover shall be securely plugged before starting the test. Essentially, the test cup shall be fitted with a tightly fitting cover which carries an opening slide

41、 and an ignition device capable, when the slide is open, of inserting an ignition flame (diameter3,5 0,5mm); when inserted, the nozzle of the ignition device shall be1 1mm above the underside of the cover. The equipment is such that an ignition trial can be performed by opening the slide, inserting

42、and removing the nozzle of the ignition device, and closing the slide again in a period of2,5 0,5s. Amechanically driven device for doing this is permitted. The source of flame in the ignition device may be any suitable flammable gas. 4.2 Water-bath, capable of being adjusted to the required tempera

43、ture (see6.1), and of adequate heat capacity to meet the requirements of6.3. A bath fitted with a stirrer and thermostat of suitable range is convenient. 4.3 Thermometers The test cup shall be fitted with a thermometer of appropriate range and dimensions, which when immersed in the test portion meas

44、ures its temperature within a maximum error of0,5 C. Athermometer having a graduation at each0,5 C is recommended. 3) At present at the stage of draft. (Revision of ISO1523-1973.)BS3900-A8:1986 BS 6664-1:1986 2 BSI 04-1999 The water-bath shall be fitted with a thermometer of equal precision. When re

45、quired, the accuracy of the thermometers shall be checked against a reference standard by an authorized laboratory using the stipulated immersion. 4.4 Support, for holding the test cup in the water-bath so that the cover and upper edge are horizontal. The cup is immersed in direct contact with the w

46、ater in such a position that the level of the test portion in the cup is the same as that of the water in the water-bath (see the Figure). 5 Sampling and sample treatment 5.1 Take a representative sample of the product to be tested using the appropriate sampling procedure for the product concerned.

47、References to sampling procedures for various products are given in Annex B. The sample shall be kept in an air-tight container until it is to be tested. The ullage, i.e.the air-space above the contents of the container, shall not be more than10% of the total capacity of the container. NOTESamples s

48、hould not be stored in plastics (polyethylene, polypropylene, etc.) bottles since volatile material may diffuse through the walls of the bottle. 5.2 Because of the possibility of loss of volatile constituents, the sample container shall be cooled to at least10 C below the selected equilibrium temper

49、ature before opening it to remove the test portion. The sample shall receive only the minimum mixing treatment to ensure uniformity. After removal of the test portion, the sample container shall immediately be tightly closed to ensure that loss of volatile flammable components from the container is minimized. If this is not carried out, the product sample shall be deemed unsuitable for further testing. Figure Closed cup, with fitted stirrer (see4.1), immersed in the water-bath (Thestirrerforthewater-bathisnotshown.)BS3900-A8:19