EN 22592:1993

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Minerölerzeugnisse - Bestimmung des Flamm- und des Brennpunktes im offenen Tiegel nach Cleveland (ISO 2592:1973)Produit pétroliers - Détermination des points d'éclair et de feu - Méthode Cleveland en vase ouvert (ISO 2592:1973)Petroleum products - Determination of flash and fire points - Cleveland open cup method (ISO 2592:1973)75.080Naftni proizvodi na splošnoPetroleum products in generalICS:Ta slovenski standard je istoveten z:EN 22592:1993SIST EN 22592:1998en01-maj-1998SIST EN 22592:1998SLOVENSKI
STANDARD
INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXAYHAPOAHAfl OPI-AHW3ALJWl I-IO CTAHAAPTki3A~HM.ORGANISATION INTERNATIONALE DE NORMALISATION Petroleum products - Determination of flash and fire points - Cleveland open cup method First edition - 1973-12-15 UDC 665.5 : 536.46 Descriptors : petroleum products, tests, fire tests, flash point, fire point. Ref. No. IS0 2592-1973 (Ej Price based on 4 pages SIST EN 22592:1998

FOREWORD IS0 (the International Organization for Standardization) is a worldwide federation of national standards institutes (IS0 Member Bodies). The work of developing International Standards is carried out through IS0 Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up 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. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as International Standards by the IS0 Council. International Standard IS0 2592 was drawn up by Technical Committee ISO/TC 28, Petroleum products, and circulated to the Member Bodies in July 1972. It has been approved by the Member Bodies of the following countries : Th e Member Body o on technical grounds Belgium Brazil Canada Chile Czechoslovakia Egypt, Arab Rep. of Germany Hungary India Iran Ireland Israel Mexico Netherlands New Zealand Norway Poland Portugal #f the following country expr tessed disapproval of the document France Romania South Africa, Rep, of Spain Sweden Thailand Turkey United Kingdom U.S.A. U.S.S.R. 0 International Organization for Standardization, 1973 l Printed in Switzerland SIST EN 22592:1998

INTERNATIONAL STANDARD IS0 2592-1973 (E) Petroleum products - Determination of flash and fire points - Cleveland open cup method 1 SCOPE AND FIELD OF APPLICATION This International Standard specifies a method, using the Cleveland open cup apparatus, of determining the flash and fire points of petroleum products. It is suitable for all petroleum products except for fuel oils and products having an open cup flash point (determined by this method) below 79 “C. NOTE - Attention is drawn to the alternative method specified in IS0 27 19, Petroleum products - Determination of flash point - Pensky-Martens closed cup method; this is recommended for determining the flash points of fuel oils and should be used when it is desired to determine the possible presence of small but significant concentrations of lower flash point substances which may escape detection when using IS0 2592. 2 PRINCIPLE The test cup is filled to a specified level with the test portion. The temperature of the test portion is increased rapidly at first and then at a slow, constant rate as the flash point is approached. At specified temperature intervals a small test flame is passed across the cup. The lowest temperature at which application of the test flame causes the vapour above the surface of the liquid to ignite is taken as the flash point. To determine the fire point, the test is continued until the application of the test flame causes the oil to ignite and burn for at least 5 s. 3 APPARATUS 3.1 Cleveland open cup apparatus, consisting of a test cup, heating plate, test flame applicator, heater, and supports as described in the Annex. NOTE - Automatic flash point testers are available and in use which may be advantageous in the saving of testing time, permit the use of smaller samples, and have other characteristics which may merit their use. If automatic testers are used, the user must be sure that all the manufacturer’s instructtins for calibrating, adjusting, and operating the instrument are followed. in any cases of dispute, the flash point as determined manually shall be considered the referee test. 3.2 Shield, 46 cm square and 61 cm high, and having an open front. 3.3 Thermometer, partial immersion type conforming to the following specification : Range Immersion Graduation at each Longer lines at each Figured at each -6to+400”C 25 mm 2°C 10°C 20°C Scale error not to exceed 1 “C up to 260 “C 2 “C over 260 “C Expansion chamber permitting heating to Overal I length I Stem diameter Bulb length Bulb diameter Distance from bottom of bulb to IO” C line Distance from bottom of bulb to 360” C line 400 “c 308 it 5 mm 6to7mm 7,5 to IO,0 mm 4,5 to 6,0 mm 49 to 58 mm 237 to 254 mm 4 PREPARATION OF APPARATUS 4.1 Support the apparatus on a level steady table in a draught-free room or compartment. Shield the top of the apparatus from strong light, by any suitable means, to permit ready detection of the flash point. Tests made in a laboratory hood (see Note) or any location where draughts occur are not to be relied upon. During the last 17 “C rise in temperature prior to the flash point, care must be taken to avoid disturbing the vapours in the test cup by careless movements or breathing near the cup. NOTE - With some samples whose vapours or products of pyrolysis are objectionable, it is permissible to place the apparatus, with shield, in a hood, the draught of which is adjustable so that vapours may be withdrawn without causing air currents over the test cup during the final 56 “C rise in temperature prior to the flash point. 4.2 Wash the test cup with an appropriate solvent to remove any oil or traces of gum or residue remaining from a previous test. If any deposits of carbon are present, remove them with steel wool. Flush the cup with cold water and dry for a few minutes over an open flame or a hot plate to remove the last traces of solvent and water. Cool the cup to at least 56 “C below the expected flash point before use. 1 SIST EN 22592:1998

IS0 2592-1973 (E) 4.3 Support the thermometer in a vertical position with the bottom of the bulb 6 mm from the bottom of the cup, and located at a point halfway between the centre and side of the cup on a diameter perpendicular to the arc (or line) of the sweep of the test flame, and on the side opposite to the test flame burner arm. 5.6 To determine the fire point, co
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