1、Manual of Petroleum Measurement Standards Chapter 8.4 Standard Practice for Sampling and Handling of Fuels for Volatility Measurement THIRD EDITION, MARCH 2014Special Notes API publications necessarily address problems of a general nature. With respect to particular circumstances, local, state, and
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19、DC 20005, standardsapi.org. iiiContents Page 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Referenced Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 Summary of Practice. . . . . . . . . . . . . . . .
21、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5 Significance and Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6 General Comments . . . .
22、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 7 Specific Sampling Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 8 Speci
23、al Precautions and Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 Keywords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24、 . . . . . . . 6 Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figures 1 Nozzle Extension for Nozzle Sampling with 4 oz Bottle . . . . . . . . . . . . . . . . . . . . . . . . . .
25、. . . . . . . . . . . . . . . 3 2 Slotted Stand Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Assembly for Bottle Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 Tank Sampling Depths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5 Assemblies for Tap Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6 Cooling Bath for Reid Equivalent Vapor Pressure Sampling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 7 Probes for Line Sampling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 Spacer for Nozzle Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 Extension for Nozzle Sampling . . . . . . . . . . . . . . . . . . . . .
29、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 10 Assembly for Nozzle Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Tables 1 Summary of Gasoline Sampling Procedures and Applicabi
30、lity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 vDesignation: D5842 14 Manual of Petroleum Measurement Standards (MPMS) Chapter 8.4 Standard Practice for Sampling and Handling of Fuels for Volatility Measurement 1 This standard is issued under the xed designation D5842; t
31、he number immediately following the designation indicates the year of original 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 () indicates an editorial change since the last revision or reapproval.
32、 1. Scope* 1.1 This practice covers procedures and equipment for obtaining, mixing, and handling representative samples of volatile fuels for the purpose of testing for compliance with the standards set forth for volatility related measurements appli- cable to light fuels. The applicable dry vapor p
33、ressure equiva- lent range of this practice is 13 to 105 kPa (2 to 16 psia). 1.2 This practice is applicable to the sampling, mixing, and handling of reformulated fuels including those containing oxygenates. 1.3 The values stated in SI units are to be regarded as the standard except in some cases wh
34、ere drawings may show inch-pound measurements which are customary for that equip- ment. 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 appro- priate safety and health practi
35、ces and determine the applica- bility of regulatory limitations prior to use. 2. Referenced Documents 2.1 ASTM Standards: 2 D4057 Practice for Manual Sampling of Petroleum and Petroleum Products (API MPMS Chapter 8.1) D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products (API MPM
36、S Chapter 8.2) D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products (API MPMS Chap- ter 8.3) D7717 Practice for Preparing Volumetric Blends of Dena- tured Fuel Ethanol and Gasoline Blendstocks for Labora- tory Analysis 2.2 API Standards: 3 MPMS Chapter 8.1Prac
37、tice for Manual Sampling of Pe- troleum and Petroleum Products (ASTM Practice D4057) MPMS Chapter 8.2Practice for Automatic Sampling of Petroleum and Petroleum Products (ASTM Practice D4177) MPMS Chapter 8.3Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products (ASTM
38、Practice D5854) 3. Terminology 3.1 Denitions of Terms Specic to This Standard: 3.1.1 bottom sample, na sample obtained from the mate- rial at the bottom of the tank, container, or line at its lowest point. 3.1.1.1 DiscussionIn practice the term bottom sample has a variety of meanings. As a result, i
39、t is recommended that the exact sampling location (for example, 15 cm 6 in. from the bottom) should be specied when using this term. 3.1.2 dead legs, nsections of pipe that, by design, do not allow for the ow of material through them. 3.1.2.1 DiscussionDead legs are not suitable for obtaining repres
40、entative samples. 3.1.3 relief lines, nsections of pipe that lead to a pressure/ vacuum relief valve. 3.1.3.1 DiscussionRelief lines are not suitable for obtain- ing representative samples. 3.1.4 stand pipes, nvertical sections of pipe or tubing extending from the gaging platform to near the bottom
41、of tanks that are equipped with external or internal oating roofs. Stand pipes also may be found on ships and barges. 3.1.4.1 DiscussionStand pipes which are not slotted or perforated will not yield representative samples. Further infor- mation on proper stand pipe design is given in 6.4.3. 1 This p
42、ractice is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and the API Committee on Petroleum Measurement, and is the direct responsibility of Subcommittee D02.02 /COMQ on Hydrocarbon Measurement for Custody Transfer (Joint ASTM-API). This practice ha
43、s been approved by the sponsoring committees and accepted by the Cooperating Societies in accordance with established procedures. This practice was issued as a joint ASTM-API standard in 1995. Current edition approved Jan. 15, 2014. Published January 2014. Originally approved in 1995. Last previous
44、edition approved in 2009 as D584204 (2009). DOI: 10.1520/D5842-14. 2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standards volume information, refer to the standards Document Summary page on the AST
45、M website. 3 Available from American Petroleum Institute (API), 1220 L. St., NW, Washington, DC 20005-4070, http:/www.api.org. *A Summary of Changes section appears at the end of this standard Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United
46、States 13.1.5 Other sample denitions are given in Practice D4057/ API MPMS Chapter 8.1. 4. Summary of Practice 4.1 It is necessary that the samples be representative of the fuel in question. The basic principle of each sampling proce- dure involves obtaining a sample in such a manner and from such l
47、ocations in the tank or other container that the sample will be representative of the fuel. A summary of the sampling procedures and their application is presented in Table 1. Each procedure is suitable for sampling a material under denite storage, transportation, or container conditions. The precau
48、- tions required to ensure the representative character of the samples are numerous and depend upon the tank, carrier, container, or line from which the sample is being obtained, the type and cleanliness of the sample container, and the sampling procedure that is to be used. 5. Signicance and Use 5.
49、1 The dry vapor pressure equivalent (DVPE) of volatile motor fuels is regulated by federal and state air pollution control agencies. In order to meet the letter of these regulations, it is necessary to sample, handle, and test these products in the precise manner as prescribed in this practice. 6. General Comments 6.1 Sample Containers: 6.1.1 Sample containers are clear or brown glass bottles, uorinated high-density polyethylene bottles, or metal cans. The clear glass bottle is advantageous because it is easily examined visually for cleanliness, and also ma
