欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ASTM F1792-1997(2010) Standard Specification for Special Requirements for Valves Used in Gaseous Oxygen Service《气态氧供气阀门特殊要求的标准规范》.pdf

    • 资源ID:535671       资源大小:75.43KB        全文页数:4页
    • 资源格式: PDF        下载积分:5000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要5000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ASTM F1792-1997(2010) Standard Specification for Special Requirements for Valves Used in Gaseous Oxygen Service《气态氧供气阀门特殊要求的标准规范》.pdf

    1、Designation: F1792 97 (Reapproved 2010)An American National StandardStandard Specification forSpecial Requirements for Valves Used in Gaseous OxygenService1This standard is issued under the fixed designation F1792; the number immediately following the designation indicates the year oforiginal adopti

    2、on or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the special requirements forvalves used in gaseo

    3、us oxygen service. It is intended that thisspecification be invoked as an additional requirement inconjunction with primary valve specifications.1.2 The values stated in this specification in inch-poundunits are to be regarded as the standard. The SI equivalentshown in parenthesis are provided for i

    4、nformation only.2. Referenced Documents2.1 ASTM Standards:2G63 Guide for Evaluating Nonmetallic Materials for Oxy-gen ServiceG88 Guide for Designing Systems for Oxygen ServiceG93 Practice for Cleaning Methods and Cleanliness Levelsfor Material and Equipment Used in Oxygen-EnrichedEnvironmentsG94 Gui

    5、de for Evaluating Metals for Oxygen Service2.2 American National Standards Institute (ANSI):3ANSI B1.1 Unified Screw Threads2.3 American Society of Mechanical Engineers (ASME):4ASME Boiler and Pressure Vessel Code2.4 Military Standards and Specifications:5MIL-STD-1330 Standard Practice for Precision

    6、 Cleaningand Testing of Shipboard Oxygen, Helium, Helium-Oxygen, Nitrogen, and Hydrogen SystemsMIL-V-5027 Valves, Check, Oxygen, High PressureMIL-STD-278 Fabrication, Welding and Inspection; Cast-ing Inspection and Repair for Machinery, Piping andProcess Vessels in Ships of the United States NavyMIL

    7、-STD-271 Non-destructive Testing Requirements forMetalsMIL-P-46122 Plastic Molding and Extrusion Material,Polyvinylidene Fluoride Polymer and Copolymer3. Ordering Information3.1 Ordering documentation for valves under this specifica-tion shall include the following information, as required, todescri

    8、be the equipment adequately.3.1.1 ASTM designation and year of issue.3.1.2 Primary valve specification (see 1.1).3.1.3 End preparations, if different than specified in 4.4.3.1.4 Supplementary requirements, if any (see S1 throughS4).4. Valve Design and Construction4.1 Valves shall incorporate the fea

    9、tures specified in 4.2-4.6.4.2 Materials of ConstructionMaterial requirements shallbe as follows:4.2.1 The pressure containing/retaining envelope (includingany bolting, union nuts, or other fastening devices establishingthe integrity of the pressure containing/retaining envelope),bellows (where appl

    10、icable), and end nipples, shall be nickel-copper (70-30). Internal trim which is in contact with the linemedia shall be nickel-copper (70-30), bronze, nickel-aluminum-bronze, Inconel Alloy 600, brass, or other materialswhich are compatible with oxygen service.4.2.2 Non-metallic seat, seat insert, or

    11、 seals. These materialsshall be selected from TFE, Reinforced TFE, CTFE, plastic inaccordance with MIL-P-46122, Polyamide (Vespel), or PEEK.The materials for O-rings and gaskets shall be compatible foroxygen service.4.2.3 LubricantsMaterials for lubricants shall be halocar-bon (25-5S), Dupont (Kryto

    12、x 240 AC, 240 AZ), Braycote 601,or other lubricants compatible with oxygen service.4.2.4 Guidance on the selection of materials for oxygenservice can be found in Guides G63 and G94. Guidance ondesigning systems for oxygen service can be found in GuideG88.1This specification is under the jurisdiction

    13、 of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved May 1, 2010. Published June 2010. Originallyapproved in 1997. Last previous edition approved in 2004 as F1792 - 97 (2004).DOI: 10.1520/

    14、F1792-97R10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Insti

    15、tute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Park Ave., New York, NY 10016-5990, http:/www.asme.org.5Available from Standardization Documents Order Desk, Bldg. 4 Se

    16、ction D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.3 General Requirements:4.3.1 Fire PreventionValves shall be constructed to mini-mize the possibility of initiating i

    17、gnition in gaseous oxygenservice. This shall be accomplished by the following:4.3.1.1 Materials for parts in contact with oxygen shall havethe highest spontaneous ignition temperatures and the lowestimpact sensitivities compatible with construction and perfor-mance limitations.4.3.1.2 Surfaces in co

    18、ntact with oxygen shall be smoothwith well-rounded edges and without sharp or thin sectionedprotrusions (that is, all parts shall have a high ratio ofvolume-to-surface area). Sharp exterior corners are prohibited,and interior corners shall have fillets to prevent the retention orentrapment of machin

    19、ing chips, burrs, or foreign material.4.3.1.3 Nonmetallic materials (O-rings, gaskets, etc.) otherthan the seating insert, if applicable, shall be well removedfrom the main flow path.4.3.2 Fire ContainmentValves shall be constructed tominimize oxygen escape in the event of an internal or externalfir

    20、e. This shall be accomplished by the following:4.3.2.1 Pressure-Boundary SealingJoints for thepressure-boundary seals shall provide an effective barrier toleakage in the event of damage or consumption of thenon-metallic sealing elements by providing long, close fittingmetal-to-metal leakage or flame

    21、 paths.4.3.2.2 Internal SeatingThe seat design shall be such thatin the event that the non-metallic seat is damaged, destroyed, orcarried away, there will be a secondary metal-to-metal seat tominimize through seat leakage. The construction and locationof the nonmetallic seals and seating inserts sha

    22、ll minimize thepossibility of ignition under a pressure surge.4.3.2.3 Pressure SurgeValves shall be designed to preventpressure surge, which could cause auto-ignition.4.4 Design Features:4.4.1 Manual valves shall be of the packless design, with thestem sealed by a bellows.4.4.2 ThreadsThreads shall

    23、conform to ANSI B1.1. Useof threads in contact with oxygen shall be minimized. Anythreads wetted by oxygen shall be of rolled construction orshall be completely chamfered and deburred to prevent thepossibility of sharp edges or machining burrs in contact withoxygen.4.4.3 CleaningPrior to assembly an

    24、d testing, valves shallbe degreased and cleaned in accordance with Practice G93, andthereafter maintained clean for oxygen service.4.5 End PreparationUnless otherwise specified (see Sec-tion 3), end preparation for the valves shall be as follows:4.5.1 Valves shall be supplied with inline extension n

    25、ippleswelded directly to the valve body or fabricated as an integralpart of the valve body. Nipples shall be of the same basicmaterial as the body. The length and schedule of these nipplesshall be as specified in Table 1.4.6 Welding and Nondestructive TestingWelding and non-destructive testing shall

    26、 be in accordance with ASME Boilerand Pressure Vessel Code, Sections VIII and IX.5. Marking5.1 Identification PlatesA metallic corrosion-resistingidentification plate shall be securely attached to the valve andshall indicate “Valve specially made for oxygen service”.5.2 In addition, each valve shall

    27、 be marked in accordancewith their applicable primary valve specification requirements.6. Quality Assurance System6.1 The manufacturer shall establish and maintain a qualityassurance system that will ensure all the requirements of thisspecification are satisfied.6.2 Awritten description of the quali

    28、ty assurance system themanufacturer will use shall be available for review andacceptance by the inspection authority.6.3 The purchaser reserves the right to witness any tests andinspect the valves in the manufacturers plant to the extentspecified on the purchase order.SUPPLEMENTARY REQUIREMENTSOne o

    29、r more of the following supplementary requirements S1, S2, S3, or S4 shall be applied onlywhen specified by the purchaser in the inquiry, contract, or order. Details of those supplementaryrequirements shall be agreed upon in writing by the manufacturer and purchaser. Supplementaryrequirements shall

    30、in no way negate any requirement of the specification itself.S1. Supplemental TestsS1.1 Supplemental tests shall be conducted at a laboratorysatisfactory to the customer and shall consist of the examina-tions and tests selected from those specified in S1.2 throughS1.4.S1.2 Examination Prior to Testi

    31、ngThe valve(s) shall beexamined visually to determine conformance with the orderingdata, dimensions, and workmanship without disassembly.S1.3 Nonmetallic Materials Compatibility TestMaterialsshall be subjected to the ozone-resistance and oxygen-bombtests as specified in MIL-V-5027, with test pressur

    32、e applicableto the valve under test. No charring or deterioration is allowed.S1.4 Nondestructive TestingNondestructive testing shallbe in accordance with MIL-STD-271.TABLE 1 Length and Schedule of Extension NipplesSize of Valve Pipe ScheduleMinimum Lengthof Extension,inches (ValveCenter to End)14 NP

    33、S to 1 NPS (13.5 mm to 33.7 mm) 80 7.00 (178 mm)1-12 NPS to 2-12 NPS (48.3 mm to 73.0 mm) 160 12.0 (305 mm)F1792 97 (2010)2S2. Cleaning, Drying, Packaging, and MarkingRequirementsS2.1 Valves shall be cleaned, dried, packaged, and markedin accordance with MIL-STD-1330. Packaging operationsshall be ac

    34、complished in an area that will prevent valvecontamination by hydrocarbons.S3. Quality AssuranceS3.1 Scope of WorkThe written description of the qualityassurance system shall include the scope and locations of thework to which the system is applicable.S3.2 Authority and ResponsibilityThe authority a

    35、nd re-sponsibility of those in charge of the quality assurance systemshall be clearly established.S3.3 OrganizationAn organizational chart showing therelationship between management and the engineering, pur-chasing, manufacturing, construction, inspection, and qualitycontrol groups is required. The

    36、purpose of this chart is toidentify and associate the various organizational groups withthe particular functions for which they are responsible. Theserequirements are not intended to encroach on the manufactur-ers right to establish, and from time to time to alter, whateverform of organization the m

    37、anufacturer considers appropriatefor its work. Persons performing quality control functions shallhave a sufficiently well-defined responsibility and the authorityand the organizational freedom to identify quality controlproblems and to initiate, recommend, and provide solutions.S3.4 Review of Qualit

    38、y Assurance SystemThe manufac-turer shall ensure and demonstrate the continuous effectivenessof the quality assurance system.S3.5 Drawings, Design Calculations, and SpecificationControlThe manufacturers quality assurance system shallinclude provisions to ensure that the latest applicable drawings,de

    39、sign calculations, specifications, and instructions, includingall authorized changes, are used for manufacture, examination,inspection, and testing.S3.6 Purchase ControlThe manufacturer shall ensure thatall purchased material and services conform to specifiedrequirements and that all purchase orders

    40、 give full details of thematerial and services ordered.S3.7 Material ControlThe manufacturer shall include asystem for material control that ensures the material received isproperly identified and that any required documentation ispresent, identified to the material, and verifies compliance tothe sp

    41、ecified requirements. The material control system shallensure that only the intended material is used in manufacture.The manufacturer shall maintain control of material during themanufacturing process by a system that identified inspectionstatus of material throughout all stages of manufacture.S3.8

    42、Manufacturing ControlThe manufacturer shall en-sure that manufacturing operations are carried out undercontrolled conditions utilizing documented work instructions.The manufacturer shall provide for inspection, where appro-priate, for each operation that affects quality or shall arrange anappropriat

    43、e monitoring operation.S3.9 Quality Control PlanThe manufacturers qualitycontrol plan shall describe the fabrication operations, includingexaminations and inspections.S3.10 WeldingThe quality control system shall includeprovisions for ensuring that welding conforms to specifiedrequirements. Welders

    44、shall be qualified to the appropriatestandards and the qualification records shall be made availableto the inspection authority if required.S3.11 Nondestructive ExaminationProvisions shall bemade to utilize non-destructive examination, as necessary, toensure that material and components comply with

    45、the specifiedrequirements. Non-destructive examinations shall be autho-rized by their employer and/or qualified by a recognizednational body, and their authorizations/qualification recordsshall be made available to the inspection authority if required.S3.12 Non-Conforming ItemsThe manufacturer shall

    46、 es-tablish procedures for controlling items not in conformancewith the specified requirements.S3.13 Heat TreatmentThe manufacturer shall providecontrols to ensure that all required heat treatments have beenapplied. Means should be provided by which heat treatmentrequirements can be verified.S3.14 I

    47、nspection StatusThe manufacturer shall maintain asystem for identifying the inspection status of material duringall stages of manufacture and shall be able to distinguishbetween inspected and non-inspected material.S3.15 Calibration of Measurement and Test EquipmentThe manufacturer shall provide, co

    48、ntrol, calibrate, and main-tain inspection, measuring and test equipment to be used inverifying conformance to the specified requirements. Suchcalibration shall be traceable to a national standard andcalibration records shall be maintained.S3.16 Records MaintenanceThe manufacturer shall havea system

    49、 for the maintenance of inspection records, radio-graphs, and manufacturers data reports that describe theachievement of the required quality and the effective operationof the quality system.S3.17 Sample FormsThe forms used in the quality controlsystem and any detailed procedures for their use shall beavailable for review. The written description of the qualityassurance system shall make reference to these forms.S3.18 Inspection AuthorityThe manufacturer shall makeavailable to the inspection authority at the manufacturers planta current copy


    注意事项

    本文(ASTM F1792-1997(2010) Standard Specification for Special Requirements for Valves Used in Gaseous Oxygen Service《气态氧供气阀门特殊要求的标准规范》.pdf)为本站会员(proposalcash356)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开