1、Standard for Fire Test for ValvesAPI STANDARD 6FAFOURTH EDITION, JUNE 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 nor any of APIs employees,
2、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 the results of such use,
3、of anyinformation or process disclosed in this publication. Neither API nor any of APIs employees, subcontractors,consultants, or other assignees represent that use of this publication would not infringe upon privately owned rights.API publications may be used by anyone desiring to do so. Every effo
4、rt 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 loss ordamage resulting
5、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 obviate the need for applyi
6、ng 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 conformance with the marking
7、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 work may be reproduced, tra
8、nslated, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission from the publisher. Contact the Publisher, API Publishing Services, 1220 L Street, NW, Washington, DC 20005.Copyright 2018 American Petr
9、oleum 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 publication be construed as
10、insuring anyone against liability for infringement of letters patent.The verbal forms used to express the provisions in this document 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 standard, “should” denotes
11、 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 capability.This document was
12、 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 concerning the procedures under
13、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 be addressed to the dire
14、ctor.Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every five years. A one-timeextension of up to two 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
15、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.iiiPrecautionsWarningFire testing of valves involves
16、potential hazards. Depending on the design of the test valve and/orthe nature of the fire test itself, the potential exists for a rupture of the pressure boundary componentsduring testing. Protection for test personnel must be provided. Additionally, hazardous byproducts may begenerated during the f
17、ire test as a result of decomposition of organic materials. Training of personnel onproper handling of any hazardous byproducts may be required.WarningThe system relief pressure must be low enough to preclude the rupture of the valve at theexpected test temperatures. WarningElements, such as lead, t
18、in, antimony, bismuth and cadmium that cause liquid metalembrittlement shall not be used in areas that are subjected to elevated temperatures.CautionA rupture of the pressure boundary components during the performance of a fire test may occur.The performance of a fire test may require additional saf
19、ety precautions to be taken to minimize thelikelihood of damage to surrounding equipment or the test environment.Important Information Concerning Use of Asbestos or Alternative MaterialsAsbestos is specified or referenced for certain components of the equipment described in some API standards. It ha
20、sbeen of extreme usefulness in minimizing fire hazards associated with petroleum processing. It has also been auniversal sealing material, compatible with most refining fluid services.Certain serious adverse health effects are associated with asbestos, among them the serious and often fatal diseases
21、of lung cancer, asbestosis, and mesothelioma (a cancer of the chest and abdominal linings). The degree of exposureto asbestos varies with the product and the work practices involved.Consult the most recent edition of the Occupational Safety and Health Administration (OSHA), U.S. Department ofLabor,
22、Occupational Safety and Health Standard for Asbestos, Tremolite, Anthophyllite, and Actinolite, 29 Code ofFederal Regulations Section 1910.1001; the U.S. Environmental Protection Agency, National Emission Standard forAsbestos, 40 Code of Federal Regulations Sections 61.140 through 61.156; and the U.
23、S. Environmental ProtectionAgency (EPA) rule on labeling requirements and phased banning of asbestos products (Sections 763.160-179).There are currently in use and under development a number of substitute materials to replace asbestos in certainapplications. Manufacturers and users are encouraged to
24、 develop and use effective substitute materials that canmeet the specifications for, and operating requirements of, the equipment to which they would apply.SAFETY AND HEALTH INFORMATION WITH RESPECT TO PARTICULAR PRODUCTS OR MATERIALS CAN BEOBTAINED FROM THE EMPLOYER, THE MANUFACTURER OR SUPPLIER OF
25、 THAT PRODUCT OR MATERIAL,OR THE MATERIAL SAFETY DATA SHEET.ContentsPage1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normative References . . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Terms, Definitions, Acronyms, Abbreviations, Symbols, and Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.1 Terms and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.2 Acronyms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Fire Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.2 Test Valve . . . . . . . . . . . . . .
29、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.3 Test Facility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.4 Test P
30、rocedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.5 Marking of Tested Products. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31、. 115 Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115.1 Validation Testing Based on Other Designs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32、 . . . . 115.2 Allowances of Scaling by Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125.3 Allowances of Scaling by Pressure Rating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33、. 135.4 Allowances of Scaling for Nonmetallic Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135.5 Allowances of Scaling for Metallic Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Certificate
34、of Conformance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Annex A (informative) Extended Nonmetallic Material Qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figures1 Schematic of Suggested S
35、ystems for Fire Test for Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Location of Calorimeters Smaller Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Location of Calorimeters Larger Valves . . . . .
36、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Calorimeter Cube Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7A.1 Steps for Qualifying Elastomers, Including Exam
37、ples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17A.2 Steps for Qualifying Plastics, Including Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Tables1 6A Test Pressure during Fire Test. . . . . . . . . . . . . .
38、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 6D Test Pressure during Fire Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Qualification by Valve Size from Test of 6A Valve. .
39、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Qualification by Valve Size from Test of 6D Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5 Qualification by Pressure Rating from Test of 6A Valve. . . . . .
40、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Qualification by Pressure Rating from Test of 6D Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 A.1 Qualification by Valve Size from Test of 6A Valve. . . . . . . . . . . . . . . . . . .
41、. . . . . . . . . . . . . . . . . . . . . . . . . . 19A.2 Qualification by Valve Size from Test of 6D Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20A.3 Qualification by Pressure Rating from Test of 6A Valve. . . . . . . . . . . . . . . . . . . . . .
42、 . . . . . . . . . . . . . . . . . . 21A.4 Qualification by Pressure Rating from Test of 6D Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21A.5 Example DMA Table for Plastic Material in Original Test Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . .
43、 . . . . . . 23A.6 Example DMA Table for Plastic Material in Second Test Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23vIntroductionThis standard is under the jurisdiction of the API Subcommittee on Valves and Wellhead Equipment(API Subcommittee 6). This standard is the
44、 result of updating the requirements from API Specification 6FA, ThirdEdition. This standard covers the requirements for testing and evaluating the performance of API Specification 6Aand Specification 6D valves when exposed to specifically defined fire conditions.viiStandard for Fire Test for Valves
45、 1 Scope The purpose of this standard is to establish the requirements for testing and evaluating the pressure-containing performance of API 6A and API 6D valves when exposed to fire. The performance requirements of this standard establish qualification criteria for all sizes and pressure ratings. T
46、his standard applies to valves with one or more closure members. This standard establishes acceptable levels for leakage through the test valve and external leakage after exposure to a fire for a 30-minute time period. The fire exposure test period has been established on the basis that it represent
47、s the maximum time required to extinguish most fires. Fires of greater duration are considered to be of a major magnitude, with consequences greater than those anticipated in this test. This standard is not intended to address the qualification of valve actuators (including manually operated gearbox
48、es). This standard does not cover check valves, pressure boundary penetration, external fittings, or end connections. 2 Normative References The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated re
49、ferences, the latest edition of the referenced document (including any amendments) applies, except that new editions may be used on issue and shall become mandatory upon the effective date specified by the publisher or six months from the date of the revision (where no effective date is specified). API Specification 6A, Specification for Wellhead and Tree Equipment API Specification 6D, Specification for Pipeline Valves and Piping Valves ASTM D1414, Standard Test Methods for Rubber O-Rings ASTM D1418, Standard Practice for Rubber and Rubber LatticesNomenclature ASTM D412, Standard Te
