ASTM_G_88_-_13.pdf

Designation:G8813Standard Guide forDesigning Systems for Oxygen Service1This standard is issued under the fixed designation G88;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide applies to the design of systems for oxygenor oxygen-enriched service but is not a comprehensive docu-ment.Specifically,this guide addresses system factors thataffect the avoidance of ignition and fire.It does not thoroughlyaddress the selection of materials of construction for whichGuides G63 and G94 are available,nor does it covermechanical,economic or other design considerations for whichwell-known practices are available.This guide also does notaddress issues concerning the toxicity of nonmetals in breath-ing gas or medical gas systems.NOTE1The American Society for Testing and Materials takes noposition respecting the validity of any evaluation methods asserted inconnection with any item mentioned in this guide.Users of this guide areexpressly advised that determination of the validity of any such evaluationmethods and data and the risk of use of such evaluation methods and dataare entirely their own responsibility.1.2 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 requirements prior to use.1.3 This standard guide is organized as follows:Section TitleSectionReferenced Documents2ASTM Standards2.1ASTM Adjuncts2.2ASTM Manuals2.3NFPA Documents2.4CGA Documents2.5EIGA Documents2.6Terminology3Significance and Use4Purpose of G884.1Section TitleSectionRole of G884.2Use of G884.3Factors Affecting the Design for anOxygen or Oxygen-Enriched System5General5.1Factors Recognized as CausingFires5.2Temperature5.2.1Spontaneous Ignition5.2.2Pressure5.2.3Concentration5.2.4Contamination5.2.5Particle Impact5.2.6Heat of Compression5.2.7Friction and Galling5.2.8Resonance5.2.9Static Electric Discharge5.2.10Electrical Arc5.2.11Flow Friction5.2.12Mechanical Impact5.2.13Kindling Chain5.2.14Other Ignition Mechanisms5.2.15Test Methods6System Design Method7Overview7.1Final Design7.2Avoid Unnecessarily Elevated Tem-peratures7.3Avoid Unnecessarily Elevated Pres-sures7.4Design for System Cleanness7.5Avoid Particle Impacts7.6Minimize Heat of Compression7.7Avoid Friction and Galling7.8Avoid Corrosion7.9Avoid Resonance7.10Use Proven Hardware7.11Design to Manage Fires7.12Anticipate Indirect Oxygen Exposure7.13Minimize Available Fuel/Oxygen7.14Avoid Potentially Exothermic Mate-rial Combinations7.15Anticipate Common Failure Mecha-nism Consequences7.16Avoid High Surface-Area-to-Volume(S/V)Conditionswhere Practical7.171This 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.1,2013.Published November 2013.Originallyapproved in 1984.Last previous edition approved in 2005 as G88 05.DOI:10.1520/G0088-13.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Section TitleSectionAvoid Unnecessarily-ElevatedOxygen Concentrations7.18Anticipate Permutations fromIntended System Design7.19Avoid Designs and FailureScenarios that can IntroducePotential Flow Friction IgnitionHazards7.20Use Only the Most Compatible ofPractical Materialsand Designs7.21Provide Thorough Safety Trainingfor All PersonnelWorking with Oxygen or Oxygen-EnrichedComponents or Systems,includingDesign,Cleaning,Assembly,Operations,andMaintenance as Applicable toPersonnel7.22Miscellaneous7.23Examples8Key Words9References2.Referenced Documents2.1 ASTM Standards:2G63 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 ImpactG93 Practice for Cleaning Methods and Cleanliness Levelsfor Material and Equipment Used in Oxygen-EnrichedEnvironmentsG94 Guide for Evaluating Metals for Oxygen ServiceG128 Guide for Control of Hazards and Risks in OxygenEnriched SystemsG175 Test Method for Evaluating the Ignition Sensitivityand Fault Tolerance of Oxygen Pressure Regulators Usedfor Medical and Emergency ApplicationsNOTE2The latest versions of these referenced documents should beconsulted.2.2 ASTM Adjuncts:3ADJG0088 Oxygen Safety Videotape and Separate2.3 ASTM Manual:Manual 36 Safe Use of Oxygen and Oxygen Systems:Guidelines for Oxygen System Design,MaterialsSelection,Operations,Storage,and Transportation2.4 NFPA