This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. Designation: G88 - 21 INTERNATIONAL Standard Guide for Designing Systems for Oxygen Service1 This standard is issued under the fixed designation G88; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. 1. Scope Section Title Section 1.1 This guide applies to the design of systems for oxygen Role of G88 4.2 Use of G88 4.3 or oxygen-enriched service but is not a comprehensive docu- Factors Affecting the Design for an Oxygen or Oxygen- 5 ment. Specifically, this guide addresses system factors that Enriched System affect the avoidance of ignition and fire. It does not thoroughly General 5.1 address the selection of materials of construction for which Factors Recognized as Causing 5.2 Guides G63 and G94 are available, nor does it cover Fires Temperature 5.2.1 mechanical, economic or other design considerations for which Spontaneous Ignition 5.2.2 well-known practices are available.This guidealsodoes not Pressure 5.2.3 address issues concerning the toxicity of nonmetals in breath- Concentration 5.2.4 Contamination 5.2.5 ing gas or medical gas systems. Particle Impact 5.2.6 NoTE 1The American Society for Testing and Materials takes no Heat of Compression 5.2.7 position respecting the validity of any evaluation methods asserted in Friction and Galling 5.2.8 connection with any item mentioned in this guide. Users of this guide are Resonance 5.2.9 expressly advised that determination of the validity of any such evaluation Static Electric Discharge 5.2.10 methods and data and the risk of use of such evaluation methods and data Electrical Arc 5.2.11 Flow Friction 5.2.12 are entirely their own responsibility. Mechanical Impact 5.2.13 1.2 This standard does not purport to address all of the Kindling Chain 5.2.14 safety concerns, if any, associated with its use. It is the Other Ignition Mechanisms 5.2.15 Test Methods 6 responsibilityof the userof thisstandardto establishappro- System Design Method priatesafety,health,and environmentalpracticesanddeter Overview 7.1 mine the applicability of regulatory limitations prior to use. Final Design 7.2 Avoid Unnecessarily ElevatedTem 7.3 1.3 This standard guide is organized as follows: peratures Section Title Section Avoid Unnecessarily Elevated Pres- 7.4 Referenced Documents sures ASTM Standards 2.1 Design for System Cleanness 7.5 ASTM Adjuncts 2.2 Avoid Particle Impacts 7.6 ASTM Manuals 2.3 Minimize Heat of Compression 7.7 NFPA Documents 2.4 Avoid Friction and Galling 7.8 CGA Documents 2.5 Avoid Corrosion 7.9 2.6 Avoid Resonance 7.10 EIGA Documents Terminology 3 Use Proven Hardware 7.11 Significance and Use 4 Design to Manage Fires 7.12 Purpose of G88 4.1 Anticipate Indirect Oxygen Exposure 7.13 Minimize Available Fuel/Oxygen 7.14 Avoid Potentially Exothermic Mate- 7.15 rial Combinations I This guide is under the jurisdiction of ASTM Committee G04 on Compatibility Anticipate Common Failure Mecha 7.16 and Sensitivity of Materials in Oxygen Enriched Atmospheres and is the direct nism Consequences responsibility of Subcommittee G04.02 on Recommended Practices. Avoid High Surface-Area-to-Volume 7.17 Current edition approved Oct. 1, 2021. Published November 2021. Originally (S/V) Conditions approved in 1984. Last previous edition approved in 2013 as G88 - 13e1. DOI: where Practical 10.1520/G0088-21 Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States 1 3 - 21 Section Title Sectio