SY/T 6725.2-2009 石油钻机用电气设备规范 第2部分：控制系统
时间:2024-05-21 22:06:59 来源: 标准资料网 作者：标准资料网 阅读：9838
基本信息
| 标准名称： | 石油钻机用电气设备规范 第2部分：控制系统 |
| 英文名称： | Criterion for electrical equipment for oil drilling rig Part 2: Control system |
| 发布部门： | 国家能源局 |
| 发布日期： | 2009-12-31 |
| 实施日期： | 2010-05-01 |
| 首发日期： | |
| 作废日期： | |
| 主管部门： | 全国石油钻采设备和工具标准化技术委员会 |
| 归口单位： | 全国石油钻采设备和工具标准化技术委员会 |
| 起草单位： | 天水电气传动研究所 |
| 出版社： | 石油工业出版社 |
| 出版日期： | 2010-05-01 |
适用范围
本部分规定了石油钻机交、直流电传动控制系统的使用条件及设计、制造、安装和试验的基本技术要求。本部分适用于陆地、沙漠和海上（固定式与可移动式平台）的石油和天然气钻井与修井用石油钻机、修井机中的发电控制系统及绞车、钻井泵、转盘/顶驱、自动送钻的交、直流电传动控制系统和辅助供电、辅助电传动系统以及自动化系统涉及的外围电气设备等。
前言
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目录
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引用标准
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所属分类： 石油 石油勘探 开发 集输设备 石油勘探 开发 集输设备综合 石油及相关技术 石油和天然气工业设备
【英文标准名称】:StandardTestMethodofVariablesSamplingofMetallicandInorganicCoatings
【原文标准名称】:金属涂层和无机物涂层的不同抽样的标准试验方法
【标准号】:ASTMB762-1990(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:1990
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:B08.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Coatingthickness;Destructivetesting--coatings;Inorganiccoatings;Metalliccoatings;Nondestructiveevaluation(NDE)--metallic/inorganiccoatings;Samplingelectrodepositedcoatings;Variablessampling
【摘要】:Samplinginspectionpermitstheestimationoftheoverallqualityofagroupofproductarticlesthroughtheinspectionofarelativelysmallnumberofproductarticlesdrawnfromthegroup.Thespecificationofasamplingplanprovidespurchasersandsellersameansofidentifyingtheminimumqualitylevelthatisconsideredtobesatisfactory.Becausesamplingplansyieldestimatesofthequalityofaproduct,theresultsoftheinspectionaresubjecttoerror.Throughtheselectionofasamplingplan,thepotentialerrorisknownandcontrolled.Samplinginspectionisusedwhenadecisionmustbemadeaboutwhattodowithaquantityofarticles.Thisquantitymaybeashipmentfromasupplier,articlesthatarereadyforasubsequentmanufacturingoperation,orarticlesreadyforshipmenttoacustomer.Insamplinginspection,arelativelysmallnumberofarticles(thesample)isselectedrandomlyfromalargernumberofarticles(theinspectionlot);thesampleisinspectedforconformancetotherequirementsplacedonthearticles.Basedontheresults,adecisionismadewhetherornotthelotconformstotherequirements.Sinceonlyaportionofaproductionlotisinspected,thequalityoftheuninspectedarticlesisnotknown.Thepossibilityexiststhatsomeoftheuninspectedarticlesarenonconforming.Therefore,basictoanysamplinginspectionplanisthewillingnessofthebuyertoacceptlotsthatcontainsomenonconformingarticles.Thenumberofnonconformingarticlesinacceptedlotsiscontrolledbythesizeofthesampleandthecriteriaofacceptancethatareplacedonthesample.Acceptancesamplingplansareusedforthefollowingreasons:Whenthecostofinspectionishighandtheconsequencesofacceptinganonconformingarticlearenotserious.When100%inspectionisfatiguingandboringand,therefore,likelytoresultinerrors.Wheninspectionrequiresadestructivetest,samplinginspectionmustbeused.Inacceptancesamplingbyvariables,thecoatingcharacteristicofeacharticleinthesampleismeasured.Usingthearithmeticmeanofthesevalues,thestandarddeviationoftheprocess,andthefactorkthatisfoundintheTables,anumberiscalculated(see9.3).Ifthisnumberequalsorexceedsthespecifiedminimum,theinspectionlotconformstotherequirements.Ifitisless,thelotdoesnotconform.Ifthestandarddeviationoftheprocessisnotknown,thestandarddeviationofthesampleiscalculatedandused.Theuseofasamplingplaninvolvesthebalancingofthecostsofinspectionagainsttheconsequencesofacceptinganundesirablenumberofnonconformingarticles.Thereisalwaysariskthatarandomsamplewillnotdescribecorrectlythecharacteristicsofthelotfromwhichitisdrawn,andthatanunacceptablelotwillbeacceptedoranacceptablelotwillberejected.Thelargerthesample,thesmallerthisriskbutthelargerthecostofinspection.Tounderstandtherisks,considerthatifeveryarticleinaninspectionlotconformstoitsrequirements,everyarticleinthesamplewillconformalso.Suchlotswillbeaccepted(Note1).Ifonlyafewarticlesinaninspectionlotarenonconforming,thesampleprobablywillindicatethatthelotisacceptable;butthereisasmallprobabilitythatthesamplewillindicatethatthelotisunacceptable.Thelargertheproportionofnonconformingarticlesinaninspectionlot,themorelikelyitwillbethatthesamplewillindicatethatthelotisunacceptable.Ifeveryarticleinaninspectionlotisnonconforming,asamplewillalwaysindicatethatthelotisunacceptable.Note18212;Throughoutthismethod,itisassumedthatnomistakesaremadeinsampling,measurement,andcalculation.The.......
【中国标准分类号】:A29
【国际标准分类号】:25_220_99
【页数】:10P.;A4
【正文语种】:英语
Product Code:SAE J2203
Title:SAE 17.6 Cubic Inch Spark Plug Rating Engine
Issuing Committee:Ignition Standards Committee
Scope:This SAE Standard defines the standard engine to be used in determining spark plug preignition ratings. The engine is known as the SAE 17.6 Cubic Inch Spark Plug Rating Engine.