ASTM G175-03
Standard Test Method for Evaluating the Ignition Sensitivity and Fault Tolerance of Oxygen Regulators Used for Medical and Emergency Applications
- Standard No.
- ASTM G175-03
- Release Date
- 2003
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM G175-03(2011)
- Latest
- ASTM G175-13(2021)
- Scope
This test method comprises two phases and is used to evaluate the ignition sensitivity and fault tolerance of oxygen regulators used for medical and emergency applications.
Phase 1: Oxygen Pressure Shock Test8212;The objective of this test phase is to determine whether the heat from oxygen pressure shocks will result in burnout or visible heat damage to the internal parts of the regulator. Phase 1 is performed according to ISO 10524, Section 11.8.1.
4.2.1 The criteria for an acceptable test are specified in ISO 10524, Section 11.8.1.
4.2.2 The pass/fail criteria for a regulator are specified in ISO 10524, Section 11.8.1.
Phase 2: Regulator Inlet Promoted Ignition Test8212;The objective of this test phase is to determine if an ignition event upstream of the regulator inlet filter will result in sustained combustion and burnout of the regulator.
4.3.1 The criterion for an acceptable test is either, (1) failure of the regulator, which is defined as the breach of the pressurized regulator component (burnout) and ejection of molten or burning metal or any internal parts from the regulator, or (2) if the regulator does not fail, consumption of at least 90 % of the ignition pill as determined by visual inspection or mass determination. Failure of the regulator at the seal ring does not constitute an acceptable test.
4.3.2 Momentary (less than 1 s) ejection of flame through normal vent paths, with sparks that look similar to those from metal applied to a grinding wheel, is acceptable.
1.1 This standard describes a test method for evaluating the ignition sensitivity and fault tolerance of oxygen regulators used for medical and emergency applications.
1.2 For the purpose of this standard, a pressure regulator is a device, also called a pressure-reducing valve, that is intended for medical or emergency purposes and that is used to convert a medical or emergency gas pressure from a high, variable pressure to a lower, more constant working pressure [21 CFR 868.2700 (a)].
1.3 This standard applies only to oxygen regulators used for medical and emergency applications that are designed and fitted with CGA 540 inlet connections or CGA 870 pin-index adapters (CGA V-1).
1.4 This standard provides an evaluation tool for determining the fault tolerance of oxygen regulators used for medical and emergency applications. A fault tolerant regulator is defined as (1) having a low probability of ignition as evaluated by rapid pressurization testing, and (2) having a low consequence of ignition as evaluated by forced ignition testing.
1.5 This standard is not a design standard; however, it can be used to aid designers in designing and evaluating the safe performance and fault tolerance capability of oxygen regulators used for medical and emergency applications (G 128).
Note 18212;It is essential that a risk assessment be carried out on breathing gas systems, especially concerning oxygen compatibility (refer to ASTM G 63 and G 94) and toxic product formation due to ignition or decomposition of nonmetallic materials as weighed against the risk of flammability (refer to ISO 15001.2). See Appendix X1 and X2.1 for details.
1.6 This standard is also used to aid those responsible for purchasing or using oxygen regulators used for medical and emergency applications in ensuring that selected regulators are tolerant of the ignition mechanisms that are normally active in oxygen systems.
1.7 This standard does not purport to address the ignition sensitivity and fault tolerance of an oxygen regulator caused by contamination during field maintenance or use. Regulator designers and manufacturers should provi......
ASTM G175-03 Referenced Document
- ASTM G128 Standard Guide for Control of Hazards and Risks in Oxygen Enriched Systems
- ASTM G63 Standard Guide for Evaluating Nonmetallic Materials for Oxygen Service
- ASTM G88 Standard Guide for Designing Systems for Oxygen Service
- ASTM G93 Standard Practice for Cleaning Methods and Cleanliness Levels for Material and Equipment Used in Oxygen-Enriched Environments
- ASTM G94 Standard Guide for Evaluating Metals for Oxygen Service
- ISO 10524 Pressure regulators and pressure regulators with flow-metering devices for medical gas systems; Technical Corrigendum 1
- ISO 15001 Anaesthetic and respiratory equipment - Compatibility with oxygen
ASTM G175-03 history
- 2021 ASTM G175-13(2021) Standard Test Method for Evaluating the Ignition Sensitivity and Fault Tolerance of Oxygen Pressure Regulators Used for Medical and Emergency Applications
- 2013 ASTM G175-13 Standard Test Method for Evaluating the Ignition Sensitivity and Fault Tolerance of Oxygen Pressure Regulators Used for Medical and Emergency Applications
- 2003 ASTM G175-03(2011) Standard Test Method for Evaluating the Ignition Sensitivity and Fault Tolerance of Oxygen Regulators Used for Medical and Emergency Applications
- 2003 ASTM G175-03 Standard Test Method for Evaluating the Ignition Sensitivity and Fault Tolerance of Oxygen Regulators Used for Medical and Emergency Applications
