ASTM_G_127_-_15.pdf

Designation:G12715Standard Guide for theSelection of Cleaning Agents for Oxygen-Enriched Systems1This standard is issued under the fixed designation G127;the number immediately following the designation indicates the 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.1.Scope1.1 The purpose of this guide is to establish a procedure toselect cleaning agents,both solvents and water-baseddetergents,for oxygen-enriched systems.This includeslaboratory-scale tests for cleaning effectiveness,materialscompatibility,and oxygen compatibility.1.2 The effectiveness of a particular cleaning agent dependsupon the method by which it is used,the nature and type of thecontaminants,and the characteristics of the article beingcleaned,such as size,shape,and material.Final evaluation ofthe cleaning agent should include testing of actual products andproduction processes.1.3 Different cleaning agents may be required for differentcleaning activities,such as aqueous ultrasonic cleaning,spraycleaning,hand wiping,and flushing of oxygen lines in fieldapplications.1.4 This standard does not purport 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:2D471 Test Method for Rubber PropertyEffect of LiquidsD543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD1193 Specification for Reagent WaterD1460 Test Method for Rubber PropertyChange inLength During Liquid ImmersionD2512 Test Method for Compatibility of Materials withLiquid Oxygen(Impact Sensitivity Threshold and Pass-Fail Techniques)D2863 Test Method for Measuring the Minimum OxygenConcentration to Support Candle-Like Combustion ofPlastics(Oxygen Index)D4809 Test Method for Heat of Combustion of LiquidHydrocarbon Fuels by Bomb Calorimeter(PrecisionMethod)F483 Practice for Total Immersion Corrosion Test for Air-craft Maintenance ChemicalsG5 Reference Test Method for Making PotentiodynamicAnodic Polarization MeasurementsG31 Guide for Laboratory Immersion Corrosion Testing ofMetalsG59 Test Method for Conducting Potentiodynamic Polariza-tion Resistance MeasurementsG63 Guide for Evaluating Nonmetallic Materials for Oxy-gen ServiceG72 Test Method for Autogenous Ignition Temperature ofLiquids and Solids in a High-Pressure Oxygen-EnrichedEnvironmentG74 Test Method for Ignition Sensitivity of NonmetallicMaterials and Components by Gaseous Fluid ImpactG86 Test Method for Determining Ignition Sensitivity ofMaterials to Mechanical Impact in Ambient Liquid Oxy-gen and Pressurized Liquid and Gaseous Oxygen Envi-ronmentsG93 Practice for Cleaning Methods and Cleanliness Levelsfor Material and Equipment Used in Oxygen-EnrichedEnvironmentsG94 Guide for Evaluating Metals for Oxygen ServiceG121 Practice for Preparation of Contaminated Test Cou-pons for the Evaluation of Cleaning AgentsG122 Test Method for Evaluating the Effectiveness ofCleaning Agents2.2 CGA Document:CGA Pamphlet G-4.1 Cleaning Equipment for Oxygen Ser-vice2.3 Other ASTM Documents:MNL36 Safe Use of Oxygen and Oxygen Systems:Hand-book for Design,Operation,and Maintenance23.Significance and Use3.1 The purpose of this guide is to provide information thatmay be considered when selecting and qualifying a cleaningagent for oxygen-enriched systems.1This guide is under the jurisdiction ofASTM Committee G04 on Compatibilityand Sensitivity of Materials in Oxygen Enriched Atmospheres and is the directresponsibility of Subcommittee G04.02 on Recommended Practices.Current edition approved Oct.1,2015.Published October 2015.Originallyapproved in 1995.Last previous edition approved in 2008 as G127 95(2008).DOI:10.1520/G0127-15.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2 Insufficient cleanliness can result in the ignition ofcontaminants or components by a variety of mechanisms.Therefore,an acceptable level of contamination for eachcondition of use in oxygen-enriched service should be defined.The acceptable level of contamination may depend on variousfactors,such as:3.2.1 The nature and type of the contaminants,3.2.2 The location and degree of contamination,3.2.3 The type of substrate material,3.2.4 The configuration and end use of the equipment or partto be cleaned,and3.2.5 The operating parameters of the oxygen-enrichedsystem(pressure,temperature,phase,concentration,fluidvelocity,etc.).4.Selection of Cleaning Agent4.1 Before a