1、MSS SP-150-2015 Valves for Use in Hydrogen Peroxide Service 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) 281-6613 Fax: (703) 281-6671 E-mail: standardsmsshq.
2、org www.msshq.org MSS STANDARD PRACTICE SP-150i This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 407, Committee 304, and the MSS Coordinating Committee. The content of this Standard Practice is the resulting efforts of competent and experienced volunteers t
3、o 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 existence of an MSS Standard Practi
4、ce 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 law, as applicable. MSS has n
5、o 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 maker of the statement. “Unles
6、s indicated otherwise within this MSS Standard Practice, other standards documents referred 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 Practice shall remain silent on t
7、he 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 rights in connection therewith. M
8、SS 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, tables, figures, and references are c
9、onstrued 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 does not include mandatory re
10、quirements. U.S. customary units in this Standard Practice are the standard; (SI) metric units are for reference only. Non-toleranced dimensions in this Standard Practice are nominal unless otherwise specified. Any excerpts of this Standard Practice may be quoted with permission. Credit lines should
11、 read Extracted from MSS SP-150-2015 with permission of the publisher, Manufacturers Standardization Society of the Valves and Fittings Industry. Reproduction and/or electronic transmission or dissemination is prohibited under copyright convention unless written permission is granted by the Manufact
12、urers Standardization Society of the Valve and Fittings Industry Inc. All rights reserved. Originally Approved: August 2015 Originally Published: December 2015 MSS is a registered trademark of Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Copyright , 2015 by Manufact
13、urers Standardization Society of the Valve and Fittings Industry, Inc. Printed in U.S.A. MSS STANDARD PRACTICE SP-150ii TABLE OF CONTENTS SECTION PAGE 1 SCOPE 1 2 DEFINITIONS . 1 3 GENERAL REQUIREMENTS 1 4 MATERIALS OF CONSTRUCTION 1 5 PASSIVATION 2 6 CLEANING 2 7 ASSEMBLY . 3 8 TESTING 3 9 PACKAGIN
14、G . 3 10 MARKING . 3 11 ACCEPTANCE CRITERIA . 3 ANNEX A Referenced Standards and Applicable Dates . 4 MSS STANDARD PRACTICE SP-1501 VALVES FOR USE IN HYDROGEN PEROXIDE SERVICE 1. SCOPE This Standard Practice contains requirements for material, design, fabrication, pressure testing, marking, and prep
15、aration for shipment of valves for use in hydrogen peroxide (H2O2) service. 2. DEFINITIONS 2.1 Cavity Any area in the valve that has the potential to entrap pressure when the valve is opened or closed. 2.2 Cavity Vent A method for release of entrapped pressure in cavities that may occur when the val
16、ve is opened or closed. 2.3 Hydrogen Peroxide A chemical compound with the formula H2O2. Thermal and other precautions should be observed. See the applicable material safety data sheet (MSDS). 2.4 Passivation The process of making a material non-reactive (passive) in relation to another material pri
17、or to using the materials together. 2.5 Other Definitions Other definitions may be found in MSS SP-96. 3. GENERAL REQUIREMENTS 3.1 Pressure boundary parts of the valve and all internal parts that can contact the media contained within the valve shall be made of the materials specified herein. 3.2 Ex
18、ternal parts that do not normally come into contact with the media contained inside the valve (such as glands, packing nut, external bolting) shall be made of materials compatible with the pressure boundary parts. 3.3 Valves containing cavities that may entrap hydrogen peroxide when the valve is ful
19、ly open or shut (such as ball and gate valves) shall have cavity vent holes machined in the parts to enable release of pressure. Cavity vent holes shall be a minimum of 1/8 inch (3 mm). A flow direction arrow shall be marked on the valve body if the cavity vent hole(s) permit shut-off in only one di
20、rection of flow. 3.4 Passivation, cleaning, assembly, inspection, post-clean testing, marking, and packaging shall be conducted by properly trained and qualified personnel knowledgeable of this Standard Practice and the materials utilized. 4. MATERIALS OF CONSTRUCTION 4.1 Valve bodies and trim parts
21、 shall be made from either: (1) 356 high purity aluminum alloy, or (2) 304 austenitic stainless steel, or (3) 316 austenitic stainless steel, or (4) wrought or cast equivalents of above. 4.1.1 Low carbon Type 304L and 316L Grades shall be used if the valve construction requires fabrication welds. 4.
22、2 Wetted surfaces of parts made from cast material shall be free of blow holes, inclusions or porosity that could contain or entrap incompatible debris. MSS STANDARD PRACTICE SP-1502 4.3 Valve seats and seals shall be either pure Polytetrafluoroethylene (PTFE), glass filled PTFE, or Polychlorotriflu
23、orethylene (PCTFE). Fluoroelastomer O-rings and gaskets can also be used for seals. 4.4 Graphitic seals are generally considered incompatible with hydrogen peroxide. Graphite will increase the rate of decomposition of hydrogen peroxide. NOTE: Use of graphitic seals may be necessary for fire-safe val
24、ve construction and may be acceptable for some applications. Graphitic seals may only be used when fire-safe valve construction is requested, and use of graphitic material is approved by the purchaser. 4.5 Certain combined fluorine/chlorine or comparable lubricants may be compatible with hydrogen pe
25、roxide. Compatible lubricants shall only be used where necessary for proper function of the valve. If used, they shall be used sparingly, only applying the minimum required for proper function. NOTE: Lubricants that may come into contact with the media inside the valve may only be used when approved
26、 by the Purchaser. 4.5.1 Proper care shall be used in determining the applicability and compatibility of a lubricant for use with hydrogen peroxide and for the intended service. Care should be taken to consult the lubricant manufacturers technical data, including thermal stability and precautionary
27、information, before selection. 5. PASSIVATION 5.1 Any marking or stamping of parts shall be done before passivation. 5.2 All stainless steel parts are to be passivated with nitric acid as per ASTM A967, Section 6. When requested by the purchaser, testing to verify the effectivity of passivation shal
28、l be completed as per ASTM A967, Practice D (Copper Sulfate Test) or Practice E (Potassium Ferricyanide-Nitric Acid Test). 5.3 Aluminum parts are to be passivated by immersion in 35% nitric acid at room temperature for two (2) hours. 6. CLEANING 6.1 All metallic parts must be individually washed to
29、remove all wax and oil by using an alkaline based detergent, per instructions provided by the cleaning agent manufacturer. 6.1.1 A suitably shaped brush shall be used to reach completely into crevices and cavities, such as stem bores and threaded holes. 6.2 All non-metallic parts are to be washed us
30、ing an alkaline based detergent, per instructions provided by the cleaning agent manufacturer, with a clean lint-free cloth to remove any oil and grease. 6.3 During and after washing, parts must be handled while wearing clean rubber or plastic gloves. 6.4 After cleaning, thoroughly rinse residual de
31、tergent from parts with clean, deionized water. 6.5 After rinsing, thoroughly dry part by blowing with clean oil-free air or Nitrogen. 6.6 Some cleaning agents may damage parts of a valve. The cleaning agent manufacturer should be consulted for compatibility with valve part materials, or sample part
32、s should be tested to ensure the cleaning agent is not harmful to the part. 6.7 Used cleaning agents shall be disposed of in accordance with appropriate hazardous waste regulations. 6.8 Applicable MSDS information shall be consulted for proper handling of cleaning agents. MSS STANDARD PRACTICE SP-15
33、03 7. ASSEMBLY 7.1 Tools used for assembly must be cleaned per Section 6. Tools, such as presses used to press-fit parts together, shall have protective measures that prevent contamination of cleaned parts. 7.2 Special care must be taken to ensure minimum handling of parts after cleaning in order to
34、 prevent oil or other contamination from being introduced onto the parts. Clean rubber or plastic gloves shall be worn. 7.3 Assemble parts as per manufacturing instructions. Use compatible lubricant sparingly and only when necessary. 8. TESTING 8.1 Seat and shell testing shall be performed as per MS
35、S SP-61 and manufacturers standard, or as specified by purchaser. 8.2 Test area and test equipment must be cleaned as per Section 6. Tools and presses used for testing shall have protective measures that prevent contamination of the assembled valve. 8.3 If shell testing was successfully completed on
36、 the valve, which was subsequently disassembled for passivation and cleaning, then a shell test does not need to be repeated. 8.4 The final assembled valve shall be pressure tested per manufacturers standard. Test media shall be oil-free air or Nitrogen. 9. PACKAGING 9.1 To keep the internal element
37、s clean and uncontaminated, valves shall be protected immediately after assembly and testing by individually sealing them inside new, clean plastic bags. 9.1.1 Valve opening(s) should be covered with protective metal or plastic caps or plugs that have been cleaned as per this Standard Practice. 9.2
38、If required to prevent rusting from humidity, desiccant bags are to be placed inside the sealed plastic bag(s). The number of desiccant bags used shall be adequate for the enclosed volume inside the plastic bag. 10. MARKING 10.1 In addition to the valve being marked as per MSS SP-25, the outside of
39、plastic bag shall be marked with the following information: a) “Cleaned for Hydrogen Peroxide Service per MSS SP-150” b) Manufacturers name and product identification number c) Date of packaging: Month/Year d) “Keep sealed until required for use” 10.2 If desiccant bags are placed inside the sealed p
40、lastic bag, a tag or sticker identifying the presence of and number of desiccant bags inside shall be placed on the outside of the bag. 11. ACCEPTANCE CRITERIA 11.1 Valves may be inspected for passivation (see Section 5) per a random sampling plan, deemed acceptable by agreement between the purchase
41、r and the manufacturer. MSS STANDARD PRACTICE SP-1504 ANNEX A Referenced Standards and Applicable Dates This Annex is an integral part of this Standard Practice and is placed after the main text for convenience. Standard Name Description ASTM A967/A967M-13 Specification for Chemical Passivation Trea
42、tments for Stainless Steel Parts MSS; ANSI/MSS SP-25-2013 Standard Marking System for Valves, Fittings, Flanges, and Unions SP-61-2013 Pressure Testing of Valves SP-96-2011 Guidelines on Terminology for Valves and Fittings The following organizations appear in the above list. ANSI American National
43、Standards Institute 25 West 43rd Street, Fourth Floor New York, NY 10036-7406 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, Inc. 127 Park Street, NE Vienna, VA 22180-4602 Pur
44、chase or View a Full Listing of MSS Standards at: http:/msshq.org/Store/PriceList.cfm MSS Standard Practices (SPs) related to or referenced in this publication: ANSI/MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and UnionsANSI/MSS SP-96 Guidelines on Terminology for Valves and Fit
45、tingsMSS SP-61 Pressure Testing of Valves American National Standards Published by MSS, an ANSI-accredited Standards 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 Sta
46、ndard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components Visual Method for Evaluation of Surface IrregularitiesANSI/MSS SP-58 Pipe Hangers and Supports - Materials, Design, Manufacture, Selection, Application, and InstallationANSI/MSS SP-96 Corrosion Resistant Pipe Fitting
47、s Threaded and Socket Welding Class 150 and 1000ANSI/MSS SP-114 Guidelines on Terminology for Valves and FittingsANSI/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
48、 SP-144 Pressure Seal Bonnet Valves Do not violate copyright laws All Standard Practices are officially available 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
49、organized for development and improvement of industry, national and international codes and standards for Valves, 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 authorities. For more information on membership and eligibility requirements, visit: http:/msshq.org/Store/Membership.cfm Manufacturers Standardization So
