Todos

Designation: D 92 – 02b

An American National Standard American Association State Highway and Transportation Officials Standard AASHTO No.: T48 DIN 51 376

Designation: 36/84 (89)

Standard Test Method for

Flash and Fire Points by Cleveland Open Cup Tester1
This standard is issued under the fixed designation D 92; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense.

INTRODUCTION

This flash point and fire point test method is a dynamic method anddepends on definite rates of temperature increases to control the precision of the test method. Its primary use is for viscous materials having flash point of 79°C (175°F) and above. It is also used to determine fire point, which is a temperature above the flash point, at which the test specimen will support combustion for a minimum of 5 s. Do not confuse this test method with Test Method D 4206, which isa sustained burning test, open cup type, at a specific temperature of 49°C (120°F). Flash point values are a function of the apparatus design, the condition of the apparatus used, and the operational procedure carried out. Flash point can therefore only be defined in terms of a standard test method, and no general valid correlation can be guaranteed between results obtained by different testmethods, or with test apparatus different from that specified. 1. Scope * 1.1 This test method describes the determination of the flash point and fire point of petroleum products by a manual Cleveland open cup apparatus or an automated Cleveland open cup apparatus.
NOTE 1—The precisions for fire point were not determined in the current interlaboratory program. Fire point is a parameter that is not commonlyspecified, although in some cases, knowledge of this flammability temperature may be desired. escape detection by Test Method D 92. Test Method D 1310 can be employed if the flash point is known to be below 79°C (175°F).

1.2 This test method is applicable to all petroleum products with flash points above 79°C (175°F) and below 400°C (752°F) except fuel oils.
NOTE 2—This test method mayoccasionally be specified for the determination of the fire point of a fuel oil. For the determination of the flash points of fuel oils, use Test Method D 93. Test Method D 93 should also be used when it is desired to determine the possible presence of small, but significant, concentrations of lower flash point substances that may

1.3 The values stated in SI units are to be regarded as the standard. Thevalues given in parentheses are for information only. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see 6.4, 7.1, 11.1.3, and 11.2.4.2. Referenced Documents 2.1 ASTM Standards: D 93 Test Methods for Flash Point by Pensky-Martens Closed Cup Tester2 D 140 Practice for Sampling Bituminous Materials3 D 1310 Test Method for Flash Point and Fire Points of Liquids by Tag Open-Cup Apparatus4 D 4057 Practice for Manual Sampling of Petroleum and

1 This test method is under the joint jurisdiction of ASTM Committee D02 on PetroleumProducts and Lubricants and is the direct responsibility of Subcommittee D02.08 on Volatility. In the IP, this test method is under the jurisdiction of the Standardization Committee. This test method was adopted as a joint ASTM-IP standard in 1965. Current edition approved Dec. 10, 2002. Published March 2003. Originally approved in 1921. Last previous edition approved in 2002 as D 92–02a.

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