MSS SP-100-2015 Qualification Requirements for Elastomer Diaphragms for Nuclear Service Diaphragm Valves.pdf

1、MSS SP-100-2015 Qualification Requirements for Elastomer Diaphragms for Nuclear Service Diaphragm Valves Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE Vienna, Virginia 22180-4602 Phone: (703) 281-661

2、3 Fax: (703) 281-6671 E-mail: standardsmsshq.org www.msshq.org MSS STANDARD PRACTICE SP-100i This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 406 and the MSS Coordinating Committee. The content of this Standard Practice is the resulting efforts of competent

3、 and experienced volunteers to provide an effective, clear, and non-exclusive standard that will benefit the industry as a whole. This MSS Standard Practice describes minimal requirements and is intended as a basis for common practice by the manufacturer, the user, and the general public. The existe

4、nce of an MSS Standard Practice does not in itself preclude the manufacture, sale, or use of products not conforming to the Standard Practice. Mandatory conformance to this Standard Practice is established only by reference in other documents such as a code, specification, sales contract, or public

5、law, as applicable. MSS has no power, nor does it undertake, to enforce or certify compliance with this document. Any certification or other statement of compliance with the requirements of this Standard Practice shall not be attributable to MSS and is solely the responsibility of the certifier or m

6、aker of the statement. “Unless indicated otherwise within this MSS Standard Practice, other standards documents referenced to herein are identified by the date of issue that was applicable to this Standard Practice at the date of approval of this MSS Standard Practice (see Annex A). This Standard Pr

7、actice shall remain silent on the validity of those other standards of prior or subsequent dates of issue even though applicable provisions may not have changed.” By publication of this Standard Practice, no position is taken with respect to the validity of any potential claim(s) or of any patent ri

8、ghts in connection therewith. MSS shall not be held responsible for identifying any patent rights. Users are expressly advised that determination of patent rights and the risk of infringement of such rights are entirely their responsibility. In this Standard Practice, all text, notes, annexes, table

9、s, figures, and references are construed to be essential to the understanding of the message of the standard, and are considered normative unless indicated as “supplemental”. All appendices, if included, that appear in this document are construed as “supplemental”. Note that supplemental information

10、 does not include mandatory requirements. Substantive changes in this 2015 edition are “flagged” by parallel bars as shown on the margins of this paragraph. The specific detail of the change may be determined by comparing the material flagged with that in the previous edition. Excerpts of this Stand

11、ard Practice may be quoted with permission. Credit lines should read Extracted from MSS SP-100-2015 with permission of the publisher, Manufacturers Standardization Society of the Valve and Fittings Industry. Reproduction and/or electronic transmission or dissemination is prohibited under copyright c

12、onvention unless written permission is granted by the Manufacturers Standardization Society of the Valve and Fittings Industry Inc. All rights reserved. MSS is a registered trademark of Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Originally Approved: June 1988 Orig

13、inally Published: September 1988 Current Edition Approved: August 2015 Current Edition Published: December 2015 Copyright , 2015 by Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Printed in U.S.A. MSS STANDARD PRACTICE SP-100ii TABLE OF CONTENTS SECTION PAGE 1 SCOPE 1

14、 2 QUALIFICATION . 1 3 PRODUCTION REQUIREMENTS . 1 4 SERVICE LIMITATIONS . 2 5 MARKING . 2 6 DOCUMENTATION . 2 ANNEX A Referenced Standards and Applicable Dates . 3 MSS STANDARD PRACTICE SP-1001 QUALIFICATION REQUIREMENTS FOR ELASTOMER DIAPHRAGMS FOR NUCLEAR SERVICE DIAPHRAGM VALVES 1. SCOPE This St

15、andard Practice delineates a method for qualification of elastomer diaphragms, in accordance with methodology and documentation as described in Appendix QR-B of ASME QME-1, that are intended for use in ASME Boiler and Pressure Vessel Code, Section III, Classes 2 and 3 diaphragm valves. In addition,

16、this Standard Practice establishes methods for production verification and for the development of service limits for Elastomer diaphragms. NOTE: See MSS SP-96, “Guidelines on Terminology for Valves and Fittings” for definitions of common terms and acronyms used in this Standard Practice. 2. QUALIFIC

17、ATION 2.1 The valve manufacturer shall prepare a test plan that details the procedures used to comply with the required tests of Section 2.2. The test plan shall state the rationale used to select the thermal aging temperature and time, radiation aging total dose, and pressure and temperature for th

18、e wear aging or cycle life test. 2.2 A specific diaphragm size, compound, design, and construction may be qualified by type testing. For each qualification step, testing shall be conducted on representative production diaphragms. This type testing shall include: 2.2.1 Thermal aging to qualify for a

19、minimum period of time, as specified in Section 4.0. The thermal aging test should be based on Arrhenius Law to determine aging time and temperature. 2.2.2 Radiation aging to a total dose level at least equal to the requirements of the Design Specification or a dose level equivalent to the service l

20、ife, as specified in Section 4.0. 2.2.3 Wear aging to qualify the elastomer diaphragm for the service life limitations, as specified in Section 4.0. The wear aging test shall include the effects of pressure, temperature, and cycles, simultaneously. 2.3 Each size diaphragm shall be subjected to a bas

21、eline life cycle test at a pressure and temperature established by the valve manufacturer. This test data will be used to establish acceptance criteria for the production lot cyclic test specified in Section 3.1.4. 2.4 Thermal aging and wear testing conducted at two different pressure/temperature co

22、mbinations may be used to qualify the diaphragm for all conditions enveloped by the two points with equal or less radiation exposure. 3. PRODUCTION REQUIREMENTS 3.1 To verify that production diaphragms are equivalent to diaphragms qualified by the procedures for Section 2.0, the following minimum re

23、quirements shall be met: 3.1.1 Certification of compound by Certificate of Compliance from the diaphragm manufacturer for each batch. 3.1.2 Verification of tensile strength, modulus, and elongation properties for each batch of the elastomer compound, as per ASTM D412. MSS STANDARD PRACTICE SP-1002 3

24、.1.3 Production lot visual, dimensional, and durometer examination to sampling procedure in accordance with ASQ Z1.4, General Inspection Level III, AQL 0.40. In addition, all diaphragms for valve sizes over NPS 2 shall be durometer tested in accordance with ASTM D2240. 3.1.4 Cycle test one diaphragm

25、 from each production lot in accordance to the life cycle test established in Section 2.3. 4. SERVICE LIMITATIONS 4.1 Service limitations shall include limitations on diaphragm flexure cycles (full stroking, close-open-close or open-close-open), time in service, and storage life as follows: 4.1.1 Th

26、e required diaphragm cycle/flexure life shall not exceed 1/3 the minimum cycle life established by the requirements of Section 2.0. 4.1.2 The service life of the elastomeric diaphragm shall not exceed five years, and the combined service and storage life of the diaphragm shall not exceed ten years.

27、5. MARKING 5.1 Elastomeric diaphragms shall be marked with the month and year of diaphragm manufacture, valve manufacturers identification symbol, and elastomer compound identification code or batch code. 6. DOCUMENTATION 6.1 The testing performed in accordance with the requirements of Section 2.0 s

28、hall be documented in a test report that shall include the test plan. 6.2 An applications report shall be prepared to show the suitability of the specific diaphragm for the service defined by a Design Specification. 6.3 In lieu of compliance with service life required by the Design Specification, th

29、e applications report shall recommend the required diaphragm replacement life or qualified service life based on time and/or cycles that are based on the data in the test report. MSS STANDARD PRACTICE SP-1003 ANNEX A Referenced Standards and Applicable Dates This Annex is an integral part of this St

30、andard Practice and is placed after the main text for convenience. Standard Name Description ASME; ANSI/ASME QME-1-2012 Qualification of Active Mechanical Equipment Used in Nuclear Power Plants ASQ; ANSI/ASQ Z1.4-2003 (R2013) Sampling Procedures and Tables for Inspection by Attributes ASTM D412-06a(

31、2013) Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers Tension D2240-05(2010) Standard Test Method for Rubber Property Durometer Hardness MSS; ANSI/MSS SP-96-2011 Guidelines on Terminology for Valves and Fittings Publications of the following organizations appear in the above

32、 list: ANSI American National Standards Institute, Inc. 25 West 43rd Street, Fourth Floor New York, NY 10036-7406 ASQ American Society for Quality 600 North Plankinton Avenue Milwaukee, WI 53203-2914 ASME American Society of Mechanical Engineers (ASME International) Two Park Avenue New York, NY 1001

33、6-5990 ASTM ASTM International 100 Barr Harbor Drive, P.O. Box C700 West Conshohocken, PA 19428-2959 MSS Manufacturers Standardization Society of the Valve and Fittings Industry 127 Park Street, NE Vienna, VA 22180-4602 Purchase or View a Full Listing of MSS Standards at: http:/msshq.org/Store/Price

34、List.cfm MSS Standard Practices (SPs) related to or referenced in this publication: ANSI/MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and Unions ANSI/MSS SP-96 Guidelines on Terminology for Valves and Fittings American National Standards Published by MSS, an ANSI-accredited Stand

35、ards Developer:ANSI/MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and UnionsANSI/MSS SP-44 Steel Pipeline Flanges (including 2011 Errata Sheet)ANSI/MSS SP-55 Quality Standard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components Visual Method for Evaluation

36、 of Surface IrregularitiesANSI/MSS SP-58 Pipe Hangers and Supports - Materials, Design, Manufacture, Selection, Application, and InstallationANSI/MSS SP-96 Corrosion Resistant Pipe Fittings Threaded and Socket Welding Class 150 and 1000ANSI/MSS SP-114 Guidelines on Terminology for Valves and Fitting

37、sANSI/MSS SP-134 Valves for Cryogenic Service, including Requirements for Body/Bonnet ExtensionsANSI/MSS SP-138 Quality Standard Practice for Oxygen Cleaning of Valves and FittingsANSI/MSS SP-144 Pressure Seal Bonnet Valves Do not violate copyright laws All Standard Practices are officially availabl

38、e only from MSS and through our authorized distributors: About MSS The Manufacturers Standardization Society (MSS) of the Valve and Fittings Industry is a non-profit technical association organized for development and improvement of industry, national and international codes and standards for Valves

39、, Valve Actuators, Valve Modifications, Pipe Fittings, Flanges, Pipe Hangers and Supports, and Associated Seals. Since its establishment in 1924, MSS has been dedicated to developing standards for national and global applications, in cooperation with other standardizing bodies and regulatory authori

40、ties. For more information on membership and eligibility requirements, visit: http:/msshq.org/Store/Membership.cfm Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE, Vienna, VA 22180-4620 (703) 281-6613 Fax # (703) 281-6671 “The Technical Voice of the Industry” MSS-IHS SP-100-2015