1、Type Testing of Process Valve Packing for Fugitive EmissionsAPI STANDARD 622SECOND EDITION, OCTOBER 2011Type Testing of Process Valve Packing for Fugitive EmissionsDownstream SegmentAPI STANDARD 622SECOND EDITION, OCTOBER 2011Special NotesAPI publications necessarily address problems of a general na
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17、 NW, Washington, DC 20005. Requests for permission to reproduce or translate all or any partof the material published herein should also be addressed to the director.Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every five years. A one-timeextension of up to tw
18、o years may be added to this review cycle. Status of the publication can be ascertained from theAPI Standards Department, telephone (202) 682-8000. A catalog of API publications and materials is publishedannually by API, 1220 L Street, NW, Washington, DC 20005.Suggested revisions are invited and sho
19、uld be submitted to the Standards Department, API, 1220 L Street, NW,Washington, DC 20005, standardsapi.org.iiiContentsPage1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Re
20、ference Publications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Terms and Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、. . . . . . . . . 24 Fugitive Emissions Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.1 Test Fixture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22、. . . . . . . . . . . . . . . . . . . . . . . . . . 44.2 Leak Test Equipment Selection and Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74.3 Packing Selection and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23、 . . . . . . . . . . . . . . . . . . . . . . . . . . 74.4 Test Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Corrosion Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115.1 Corrosion Test Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115.2 Pre-Test Requirements . . . . . . . . . . . .
25、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115.3 Ambient Corrosion Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125.4 High Temperature Corrosion
26、 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135.5 Corrosion Test Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Packing Material
27、s Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1 Weight Loss Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28、 . . 156.2 Density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.3 Lubricant Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、 . . . . . . . . . . . . . . . . . . . . . . 166.4 Leachables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176.5 Packing Materials Test Reporting . . . . . . . . . . . . . . . . . . . . . . .
30、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Annex A (normative) NEEDS TITLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Annex B (normative) Emissions Test Fixture Construction. . . . . . . .
31、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Annex C (normative) High Temperature Corrosion Test Fixture Construction . . . . . . . . . . . . . . . . . . . . . . . . . . 28Figures1 Emission Test Fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Mechanical and Thermal Cycling Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Emission Test Equipment Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 Emission Test Fixture Detail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Corrosion Test Vessel. . . . . . . . . . . . . . . . . . . . . . . . . . .
34、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Compression Test Fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 High Temperature Corrosion Test System . . . . . . . . .
35、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14B.1 Emissions Test Fixture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27C.1 High Temperature Corrosion Test Fixture . . . .
36、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29TablesA.1 Fugitive Emissions Test Report Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18A.2 Ambient Temperature Corrosion Test Data Sheet.
37、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21A.3 High Temperature Corrosion Test Data Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22A.4 Material Test Report . . . . . . . . . . . . . . . . . . . .
38、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23vIntroductionThe purpose of this API standard is to establish a uniform procedure for evaluation of process valve stem packing.The testing approaches defined within this standard provide a method for
39、 evaluating packing systems. This testingprogram shall provide a basis for the comparison of the emissions and life cycle performance of packing. Use of this standard assumes the execution of its provisions is entrusted to appropriately qualified and experiencedpersonnel because it calls for procedu
40、res that can be injurious to health if adequate precautions are not taken. Thisstandard refers only to technical suitability and does not absolve the user from legal obligations relating to health andsafety at any stage of the procedure.1Type Testing of Process Valve Packing for Fugitive Emissions1S
41、copeThis standard specifies the requirements for comparative testing of valve stem packing for process applicationswhere fugitive emissions are a consideration. Packing(s) shall be suitable for use at service temperatures 29 C to538 C (20 F to 1000 F). Factors affecting fugitive emissions performanc
42、e that are considered by this standardinclude temperature, pressure, thermal cycling, mechanical cycling, and corrosion.This standard is not intended to replace type testing of valve assemblies or valve production testing. This standard establishes requirements and parameters for the following tests
43、: a) fugitive emissions,b) corrosion, andc) packing material composition and properties.Test methods apply to packing for use in on-off valves with the following stem motion(s):a) rising stem, andb) rotating stem. The test for fugitive emissions is based upon elements of EPA Method 21, providing com
44、parative values of packingperformance.2 Reference PublicationsThe following standards contain provisions that, through reference in this text, constitute provisions of this APIstandard. At the time of the publication, the editions indicated were valid. All standards are subject to revision, andparti
45、es to agreements based on this standard are encouraged to investigate the possibility of applying the most recenteditions of the standards indicated below. ASME B16.51, Pipe Flanges and Flanged FittingsASME B16.20, Metallic Gaskets for Pipe FlangesRing Joint, Spiral-wound, and JacketedASME B16.34, V
46、alvesFlanged, Threaded and Welding EndASME SECT VIII DIV2, ASME Boiler and Pressure Vessel CodeEPA2Method 21, Determination of Volatile Organic Compound LeaksFSA3-G-604-07, Oxidation Test Standard for Flexible Graphite Gasket MaterialsMSS4SP-120, Flexible Graphite Packing System for Rising Stem Stee
47、l ValvesDesign Requirements1ASME International, 3 Park Avenue, New York, New York 10016-5990, www.asme.org.2U.S. Environmental Protection Agency, 109 TW Alexander Drive, Durham, North Carolina 27709, www.epa.gov.3Fluid Sealing Association, 994 Old Eagle School Road, Suite 1019, Wayne, Pennsylvania 1
48、9087-1866, .4Manufacturers Standard Society, 889 North Freedom Boulevard, Suite 100, Provo, Utah 84604, .2 API STANDARD 6223 Terms and DefinitionsFor the purposes of this standard, the following definitions shall apply.3.1active inhibitorA type of galvanic corrosion inhibitor, applied as a surface c
49、oating to packing or added to packing material during thedie-forming process, providing a sacrificial anode material corroding in preference to the surrounding metal. See alsocorrosion inhibitor, galvanic corrosion, passive inhibitor, and pitting. 3.2actuateTo cause movement of a valve stem either by raising, lowering or turning it.3.3anti-extrusion ringA ring of packing used at one or both ends of a packing set to prevent extrusion of packing material into clearances. 3.4ambient temperatureTemperature of testing facility that is between 15 C (6
