ASTM D7453-2009(2015) 2222 Standard Practice for Sampling of Petroleum Products for Analysis by Process Stream Analyzers and for Process Stream Analyzer System Validation《采用工艺流分析仪进.pdf
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1、Designation: D7453 09 (Reapproved 2015)Standard Practice forSampling of Petroleum Products for Analysis by ProcessStream Analyzers and for Process Stream Analyzer SystemValidation1This standard is issued under the fixed designation D7453; the number immediately following the designation indicates th
2、e year oforiginal adoption 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.INTRODUCTIONThe primary focus of sampling petroleum product is
3、 the timely presentation of the sample for (1)analysis by online analyzers, (2) validation of an analyzer system and (3) collecting a compositesample for batch physical property determination. Sediment, free water, rust, and other contaminantsfound in the sample may be removed in the sample conditio
4、ning system to protect the hardware andanalytical systems. If a sample is being collected for later analysis, the sample receiver must not alteror degrade the physical make up of the sample in any way. If a sample is being feed to an analyzeror sampled for latter determination of water or particulat
5、e contamination then filtering is not an option.1. Scope1.1 This practice covers the performance requirements forsample systems employed to deliver process stream samples(1) to analyzer system for analyses or (2) for analyzervalidation or (3) for composite sample systems. It also outlinesthe selecti
6、on and operation of line or batch sampling equipmentintended for analyzer flow proportioned average property valuesystem validation. Sample handling, mixing, and conditioningprocedures are required to ensure that a representative sampleof the liquid petroleum product is collected from the samplingso
7、urce.1.2 Applicable FluidsThis practice is applicable to singleliquid phase petroleum products whose vapor pressure atsampling and sample storage conditions is less than or equal to110 kPa (16.0 psi), and, with a D86 final boiling point less thanor equal to 400 C (752 F).1.2.1 Specialized sample han
8、dling may be necessary tomaintain sample integrity of more volatile materials at hightemperatures or extended residence time in the receiver. Suchhandling requirements are not within the scope of this practice.Users should consult the analytical methods to be performed onthe sample for special sampl
9、e storage or conditioning require-ments.1.3 Some or all of the processes outlined in this practicemay be applicable to other liquids. Applying this practice toother liquids will require the consideration of additionalmethods and practices. It is the responsibility of the user of thisstandard to iden
10、tify any and all applicable safety and samplingconsiderations and establish appropriate procedures to handlethese additional considerations.1.4 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.5 This standard does not purport
11、to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D3764 P
12、ractice for Validation of the Performance of ProcessStream Analyzer SystemsD6122 Practice for Validation of the Performance of Multi-variate Online, At-Line, and Laboratory Infrared Spectro-photometer Based Analyzer SystemsD6624 Practice for Determining a Flow-Proportioned Aver-age Property Value (F
13、PAPV) for a Collected Batch ofProcess Stream Material Using Stream Analyzer Data1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts, Liquid Fuels, and Lubricants and is the direct responsibility of Subcom-mittee D02.25 on Performance Assessment and Validation of Proce
14、ss StreamAnalyzer Systems.Current edition approved April 1, 2015. Published May 2015. Originallyapproved in 2009. Last previous edition approved in 2009 as D7453 09. DOI:10.1520/D7453-09R15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servi
15、ceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D7278 Guide for Prediction ofAnalyzer Sample System LagTi
16、mes3. Terminology3.1 Definitions:3.1.1 analyzer unit response time, ntime interval betweenthe introduction of a step change in property characteristic atthe inlet of the analyzer unit and when the analyzer outputindicates a value corresponding to 99.5 % of the subsequentchange in analyzer results.3.
17、1.2 automatic sampler, ndevice used to repetitivelyextract an grab and collect a representative sample of a batchor process stream.3.1.3 automatic sampling system, nsystem consisting of asample probe, sample fast cycle loop, sample supply linestream conditioning, an automatic sampler and an associat
18、edcontroller, a flow measuring device, and sample holding,mixing and handling capabilities.3.1.4 batch, nterm referring to a volume or parcel beingtransferred.3.1.5 flow proportional sampler, nsampler designed toautomatically adjust the sampling rate to be proportional to theflow rate of the stream.
19、3.1.6 grab, nvolume of sample extracted from a batch bya single actuation of the sample extractor.3.1.7 lag time, ntime required for material to travel frompoint A to point B in the total analyzer system (points A and Bare user-defined).3.1.8 line sample, nprocess material that can be safelywithdraw
20、n from a sample port and associated facilities locatedanywhere in the total analyzer system without significantlyaltering the property of interest.3.1.9 primary test method (PTM), nASTM or other estab-lished standard test method that produces results accepted asthe reference measure of a property.3.
21、1.10 sample conditioning unit lag time, n time requiredfor material to flow from the sample conditioning unit inlet tothe analyzer unit inlet.3.1.11 sample fast cycle loop, na system that continuallyand rapidly transports a representative sample of processmaterial from the sample probe past the samp
22、le supply line andreturns the remaining material to the process.3.1.11.1 sample fast loop lag time, ntime required formaterial to transport from the product takeoff point of thesample loop to the sample conditioning unit inlet.3.1.12 total analyzer system response time, ntime intervalbetween the whe
23、n a step change in property characteristicarrives at the sample loop inlet and when the analyzer outputindicates a value corresponding to 99.5 % of the subsequentchange in analyzer results.3.1.12.1 DiscussionThe total analyzer system responsetime is the sum of the sample fast loop lag time, the samp
24、leconditioning unit lag time, and the analyzer unit response time.3.1.13 validation, nstatistically quantified judgment thatthe analyzer system or subsystem being assessed can producepredicted PTM results with acceptable precision and biasperformance when compared to actual results from a primarytes
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