1、Validation of Safety and Shutdown Valves for Sandy ServiceAPI STANDARD 6AV1THIRD EDITION, JULY 2018Special NotesAPI publications necessarily address problems of a general nature. With respect to particular circumstances, local,state, and federal laws and regulations should be reviewed.Neither API no
2、r any of APIs employees, subcontractors, consultants, committees, or other assignees make anywarranty or representation, either express or implied, with respect to the accuracy, completeness, or usefulness of theinformation contained herein, or assume any liability or responsibility for any use, or
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4、ring to do so. Every effort has been made by the Institute to assure theaccuracy and reliability of the data contained in them; however, the Institute makes no representation, warranty, orguarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for
5、 loss ordamage resulting from its use or for the violation of any authorities having jurisdiction with which this publication mayconflict.API publications are published to facilitate the broad availability of proven, sound engineering and operatingpractices. These publications are not intended to ob
6、viate the need for applying sound engineering judgmentregarding when and where these publications should be utilized. The formulation and publication of API publicationsis not intended in any way to inhibit anyone from using any other practices.Any manufacturer marking equipment or materials in conf
7、ormance with the marking requirements of an API standardis solely responsible for complying with all the applicable requirements of that standard. API does not represent,warrant, or guarantee that such products do in fact conform to the applicable API standard.All rights reserved. No part of this wo
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9、yright 2018 American Petroleum InstituteForewordNothing contained in any API publication is to be construed as granting any right, by implication or otherwise, for themanufacture, sale, or use of any method, apparatus, or product covered by letters patent. Neither should anythingcontained in the pub
10、lication be construed as insuring anyone against liability for infringement of letters patent.The verbal forms used to express the provisions in this standard are as follows:Shall: As used in a standard, “shall” denotes a minimum requirement in order to conform to the standard.Should: As used in a s
11、tandard, “should” denotes a recommendation or that which is advised but not required in orderto conform to the standard.May: As used in a standard, “may” denotes a course of action permissible within the limits of a standard.Can: As used in a standard, “can” denotes a statement of possibility or cap
12、ability.This document was produced under API standardization procedures that ensure appropriate notification andparticipation in the developmental process and is designated as an API standard. Questions concerning theinterpretation of the content of this publication or comments and questions concern
13、ing the procedures under whichthis publication was developed should be directed in writing to the Director of Standards, American PetroleumInstitute, 1220 L Street, NW, Washington, DC 20005. Requests for permission to reproduce or translate all or any partof the material published herein should also
14、 be addressed to the director.Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every 5 years. A one-timeextension of up to 2 years may be added to this review cycle. Status of the publication can be ascertained from theAPI Standards Department, telephone (202) 682
15、-8000. A catalog of API publications and materials is publishedannually by API, 1220 L Street, NW, Washington, DC 20005.Suggested revisions are invited and should be submitted to the Standards Department, API, 1220 L Street, NW,Washington, DC 20005, standardsapi.org.iiiContentsPage1 Scope . . . . .
16、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normative References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17、. 13 Terms, Definitions, and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.1 Terms and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18、. . 13.2 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Validation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19、. . . . . . . . . . . . . . . . 34.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.2 Class II and Class III Valve Validation. . . . . . . . . . . . . . . . . . . . . . . . . . . .
20、. . . . . . . . . . . . . . . . . . . . . . . . . 34.3 Test Agency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.4 Validation-Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125.1 Class II Test Procedure . . . . . . . . . . . . . . . . . . . . . .
22、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125.2 Class III Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 Scaling of Test Results. . . . . . . . . . . . . . . . .
23、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.2 Scaling of Class II Validation Re
24、sults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.3 Scaling of Class III Validation Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Bibliography. . . . . . . . . . . . . . .
25、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Figures1 Example Piping Arrangement-Test Facility for Class II Valve Validation . . . . . . . . . . . . . . . . . . . . . . . . 52 Example Valve Validation Section Detail .
26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Class II Validation Summary Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Class III Validation Summary Flow Diagram. . . . . . . . . .
27、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Tables1 Example Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Example Class II Test Reporting Form . . . . . . . . . . .
28、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Example Class III Test Reporting Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Initial Seal Test . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Sand Slurry Flow Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Sand Slurry Flow Test While Opening and Closing during Ci
30、rculation. . . . . . . . . . . . . . . . . . . . . . . . . 157 Initial Seal Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 Class III Sand Slurry Flow Rates . . . . . . . . . . . . . . . . . . . . .
31、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Class III Sand Slurry Flow Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1910 Sand Slurry Flow Test While Opening and Closing during Circulation. . . . .
32、 . . . . . . . . . . . . . . . . . . . . 20vIntroductionThe validation of wellhead surface safety valves (SSVs), boarding shutdown valves (BSDVs), and underwater safetyvalves (USVs) is an important part of determining their fitness for service. In prior editions of API 6A and ISO 10423,the requireme
33、nts for safety valve validation have been included as an annex in those documents. Recently, APISubcommittee 6 responsible for API 6A has determined that the industry is best served by having a separatespecification for these validation tests to align with commercial practices. This separate documen
34、t also allowsregulators the possibility of referring to it without having to align with a specific edition of API 6A that might containthose requirements. This edition of API 6AV1 contains the following major changes from prior editions: The title of the standard was changed from “Specification for
35、Validation of Wellhead Surface Safety Valves andUnderwater Safety Valve for Offshore Service” to “Validation of Safety and Shutdown Valves for Sandy Service.” The Scope was reworded to explain the intention of the tests for SSV, USV, and BSDV applications and to clarifythat the validation of the act
36、uator is outside the scope of this standard. The words “test valve” have replaced “SSV/USV valve” throughout the document to acknowledge the potentialvalidation of BSDVs. For Class III, the wording “substantive change to the valve bonnet assembly” in the previous edition was clarifiedto read “substa
37、ntive change to the valve stem seal.” The test agency is now required to conform to ISO 17025.Annex A (API Monogram Program) was removed.vii1 Validation of Safety and Shutdown Valves for Sandy Service 1 Scope There are three service classes, Class I, Class II, and Class III, for API 6A surface safet
38、y valve (SSV), underwater safety valve (USV), or boarding shutdown valve (BSDV). This standard establishes sandy service design validation for valves to meet Class II and Class III. Class II is intended to validate the valve bore sealing mechanism if substances such as sand can be expected to cause
39、safety or shutdown valve failure. Class III adds additional requirements and validation of the bonnet assembly inclusive of stem seals. Validation of the actuator is outside the scope of this standard. NOTE This standard does not contain the validation requirements for Class I safety valves. 2 Norma
40、tive References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. API Manual of Petroleum Measureme
41、nt Standards (MPMS) Chapter 10.4, Determination of Sediment and Water in Crude Oil by the Centrifuge Method (Field Procedure) API Specification 6A, Specification for Wellhead and Christmas Tree Equipment API Recommended Practice 13B-1, Recommended Practice for Field Testing Water-based Drilling Flui
42、ds ISO/IEC 17025 1,2, General requirements for the competence of testing and calibration laboratories 3 Terms, Definitions, and Abbreviations 3.1 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 actuator Device that causes the test valve to op
43、en when power is supplied and to automatically close when power is lost or released. 3.1.2 failure Improper performance of a device or equipment item that prevents completion of its design function. 3.1.3 management system Set of interrelated or interactive elements that establish policy and objecti
44、ves and provide a means to achieve those objectives. 3.1.4 sandy service Application where the retained fluid could contain particulates such as sand. 1International Organization for Standardization, Chemin de Blandonnet 8, CP 401, 1214 Vernier, Geneva, Switzerland, www.iso.org. 2International Elect
45、rotechnical Commission, 3 rue de Varemb, CH 1211, Geneva, Switzerland, http:/www.iec.ch. 2 API STANDARD 6AV1 3.1.5 substantive change Change identified by the manufacturer that affects the performance of the product in the intended service. 3.1.6 test agency Independent third party that provides a t
46、est facility and administers a testing program that meets the test valve validation requirements of this standard. 3.1.7 test valve Prototype or production valve with an actuator that conforms to the requirements of 4.4.1 or 4.4.2. 3.1.8 validation Confirmation, through the provision of objective ev
47、idence (data), that the requirements for a specific intended use or application have been fulfilled. NOTE Previous editions referred to this term as “verification test/testing.” 3.1.9 valve Portion of the SSV/USV/BSDV that contains retained fluid and shuts off the flow when closed. 3.2 Abbreviations
48、 For the purposes of this document, the following abbreviations apply. bbl barrels BSDV boarding shutdown valve gpm gallons per minute m3cubic meters m3/min cubic meters per minute MPa megapascals PR performance requirement PSL product specification level psi pounds per square inch (gauge) RWP rated
49、 working pressure SSV surface safety valve USV underwater safety valve VALIDATION OF SAFETY AND SHUTDOWN VALVES FOR SANDY SERVICE 3 4 Validation 4.1 General Validations of valves to Class II that have been completed in accordance with testing requirements of API 14D or previous editions of API 6AV1 or API 6A during their validity shall satisfy the requirements of API 6AV1 Class II of this edition. Validations of valves for Class III that have been completed in accordance with testing requirements of the previous edition of API 6AV1 during its validity shall satisfy the requir
