ASTM G127-95(2000)

Standard Guide for the Selection of Cleaning Agents for Oxygen Systems

SIGNIFICANCE AND USE
The purpose of this guide is to provide information that may be considered when selecting and qualifying a cleaning agent for an oxygen system.
Insufficient cleanliness can result in the ignition of contaminants or components by a variety of mechanisms. Therefore, an acceptable level of contamination for each condition of use in oxygen service should be defined. The acceptable level of contamination may depend on various factors, 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 part to be cleaned, and
3.2.5 The operating parameters of the oxygen system (pressure, temperature, phase, concentration, fluid velocity, etc.).
SCOPE
1.1 The purpose of this guide is to establish a procedure to select cleaning agents, both solvents and water-based detergents, for oxygen service. This includes of laboratory-scale tests for cleaning effectiveness, materials compatibility and oxygen compatibility.  
1.2 The effectiveness of a particular cleaning agent depends upon the method by which it is used, the nature and type of the contaminants, and the characteristics of the article being cleaned, such as size, shape, and material. Final evaluation of the cleaning agent should include testing of actual products and production processes.  
1.3  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Dec-1999
• ICS: 71.100.40 - Surface active agents
• Technical Committee: G04 - Compatibility and Sensitivity of Materials in Oxygen Enriched Atmospheres
• Drafting Committee: G04.02 - Recommended Practices

Relations

• Replaces: ASTM G127-95 - Standard Guide for the Selection of Cleaning Agents for Oxygen Systems
• Effective Date: 01-Jan-2000
• Replaced By: ASTM G127-95(2008) - Standard Guide for the Selection of Cleaning Agents for Oxygen Systems
• Effective Date: 01-Apr-2008
• Referred By: ASTM G121-18 - Standard Practice for Preparation of Contaminated Test Coupons for the Evaluation of Cleaning Agents
• Effective Date: 01-Jan-2000
• Referred By: ASTM F310-07(2020) - Standard Practice for Sampling Cryogenic Aerospace Fluids
• Effective Date: 01-Jan-2000
• Referred By: ASTM G120-15(2023) - Standard Practice for Determination of Soluble Residual Contamination by Soxhlet Extraction
• Effective Date: 01-Jan-2000
• Referred By: ASTM G93/G93M-19 - Standard Guide for Cleanliness Levels and Cleaning Methods for Materials and Equipment Used in Oxygen-Enriched Environments
• Effective Date: 01-Jan-2000
• Referred By: ASTM G122-20 - Standard Test Method for Evaluating the Effectiveness of Cleaning Agents and Processes
• Effective Date: 01-Jan-2000

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:G127–95 (Reapproved 2000)
Standard Guide for the
Selection of Cleaning Agents for Oxygen Systems
This standard is issued under the fixed designation G 127; 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 D 2934 Practice for Rubber Seals—Compatibility with Ser-
vice Fluids
1.1 The purpose of this guide is to establish a procedure to
D 4809 Test Method for Heat of Combustion of Liquid
select cleaning agents, both solvents and water-based deter-
Hydrocarbon Fuels by Bomb Calorimeter (Intermediate
gents, for oxygen service. This includes of laboratory-scale
Precision Method)
tests for cleaning effectiveness, materials compatibility and
G 5 Reference Test Method for Making Potentiostatic and
oxygen compatibility.
Potentiodynamic Anodic Polarization Measurements
1.2 The effectiveness of a particular cleaning agent depends
G 31 Practice for Laboratory Immersion Corrosion Testing
upon the method by which it is used, the nature and type of the
of Metals
contaminants, and the characteristics of the article being
G 59 Practice for Conducting Potentiodynamic Polarization
cleaned, such as size, shape, and material. Final evaluation of
Resistance Measurements
thecleaningagentshouldincludetestingofactualproductsand
G 63 Guide for Evaluating Nonmetallic Materials for Oxy-
production processes.
gen Service
1.3 This standard does not purport to address all of the
G 72 Test Method for Autogenous Ignition Temperature of
safety concerns, if any, associated with its use. It is the
Liquids and Solids in a High-Pressure Oxygen-Enriched
responsibility of the user of this standard to establish appro-
Environment
priate safety and health practices and determine the applica-
G 74 Test Method for Ignition Sensitivity of Materials to
bility of regulatory limitations prior to use.
Gaseous Fluid Impact
2. Referenced Documents
G 93 Practice for Cleaning Methods for Material and
Equipment Used in Oxygen-Enriched Environments
2.1 ASTM Standards:
G 94 Guide for Evaluating Metals for Oxygen Service
D 471 Test Method for Rubber Property—Effect of Liq-
G 121 Practice for Preparation of Contaminated Test Cou-
uids
pons for the Evaluation of Cleaning Agents
D 543 Test Method for Resistance of Plastics to Chemical
G 122 Test Method to Evaluate the Effectiveness of Clean-
Reagents
ing Agents
D 1193 Specification for Reagent Water
2.2 CGA Document:
D 1460 Test Method for Rubber Property—Change in
CGA Pamphlet G-4.1 Cleaning Equipment for Oxygen
Length During Liquid Immersion
Service
D 2512 Test Method for Compatibility of Materials with
Liquid Oxygen (Impact Sensitivity Threshold and Pass-
3. Significance and Use
Fail Techniques)
3.1 The purpose of this guide is to provide information that
D 2863 Test Method for Measuring the Minimum Oxygen
may be considered when selecting and qualifying a cleaning
Concentration to Support Candle-like Combustion of Plas-
agent for an oxygen system.
tics (Oxygen Index)
3.2 Insufficient cleanliness can result in the ignition of
contaminants or components by a variety of mechanisms.
This guide is under the jurisdiction of ASTM Committee G4 on Compatibility
Therefore, an acceptable level of contamination for each
and Sensitivity of Materials in Oxygen Enriched Atmospheres and is the direct
responsibility of Subcommittee G04.02 on Recommended Practices.
Current edition approved June 15, 1995. Published May 1996.
Annual Book of ASTM Standards, Vol 09.01.
3 7
Annual Book of ASTM Standards, Vol 08.01. Annual Book of ASTM Standards, Vol 09.02.
4 8
Annual Book of ASTM Standards, Vol 11.01. Annual Book of ASTM Standards, Vol 05.03.
5 9
Annual Book of ASTM Standards, Vol 15.03. Annual Book of ASTM Standards, Vol 03.02.
6 10
Annual Book of ASTM Standards, Vol 08.02. Annual Book of ASTM Standards, Vol 14.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
G127
condition of use in oxygen service should be defined. The 5.3.2.1 Ethylene Propylene Rubber (EPDM),
R R
acceptable level of contamination may depend on various
5.3.2.2 Perfluoroelastomer (Kalrez , Chemraz ),
R
factors, such as:
5.3.2.3 PCTFE, Polychlorotrifluoroethylene (Kel-F ),
3.2.1 The nature and type of the contaminants,
5.3.2.4 Chloroprene Rubber (Neoprene),
3.2.2 The location and degree of contamination,
5.3.2.5 Polyamid Polymer (Nylon),
3.2.3 The type of substrate material,
R
5.3.2.6 PTFE, Polytetrafluoroethylene (Teflon ), and
3.2.4 Theconfigurationandenduseoftheequipmentorpart
R
5.3.2.7 Fluoroelastomer (Viton A, Fluorel).
to be cleaned, and
3.2.5 The operating parameters of the oxygen system (pres-
6. Cleaning Effectiveness Tests
sure, temperature, phase, concentration, fluid velocity, etc.).
6.1 Selection of Test Contaminants:
4. Selection of Cleaning Agent
6.1.1 Numerous contaminants encountered in oxygen sys-
4.1 Before a specific cleaning agent is selected for testing,
tems that could result from manufacturing, assembly, fabrica-
the following attributes should be considered.
tion, and construction processes are listed in Practice G 93.
4.1.1 Toxicity,
Typical contaminants include:
4.1.2 Carcinogenicity,
6.1.1.1 Hydrocarbon oils and greases,
4.1.3 Recyclability,
6.1.1.2 Fluorinated fluids and greases,
4.1.4 Waste disposal,
6.1.1.3 Inks,
4.1.5 Ozone depletion,
6.1.1.4 Machine cutting oils,
4.1.6 Inertness (flammability and combustibility),
6.1.1.5 Carbon deposits,
4.1.7 Corrosivity and compatibility with metallic and non-
6.1.1.6 Silicone oils and greases,
metallic engineering materials,
4.1.8 Availability and technical support from supplier, 6.1.1.7 Phosphate esters,
4.1.9 Cost effectiveness, and
6.1.1.8 Waxes,
4.1.10 Compliance with local, state and federal regulations.
6.1.1.9 Dye penetrants,
4.2 Itisdesirablethatthecleaningagentcouldbeappliedby
6.1.1.10 Chlorotrifluoroethylene based oils and greases.
a variety of methods, such as wiping, immersion, spraying, etc.
6.1.2 Among typical contaminants, hydrocarbons are the
Consequently, the cleaning agent manufacturer’s instructions
prime candidates for the test protocol.When dealing with other
for applying the cleaner shall be considered.
contaminants, the user should attempt to classify the type of
contamination expected on the equipment to be cleaned.
5. Selection of Substrate Materials
6.1.3 As a preliminary test, a mixture of common cutting
5.1 Substrate materials used for cleaning effectiveness and
oils may be used as a contaminant. It may be carried in a
compatibilitytestsshouldberepresentativeofthoseusedinthe
suitable volatile solvent as a means to introduce it into a
end application.
system. In addition, vacuum pump oil, or a compressor oil are
5.2 Metallic Materials:
suggested as contaminants for the evaluation program. In a
5.2.1 Metallic materials commonly used in oxygen systems
more refined test at later stages, fluorinated oils/greases, dye
are listed in Guide G 94.
penetrants, or a mixture of as many contaminants as necessary
5.2.2 Alloys representative of numerous applications in
may be prepared in a suitable solvent. Eventually, actual
oxygen systems and suitable for inclusion in a test protocol are
contaminants encountered on an engineering component or
as follows:
system for oxygen service shall be evaluated for removal
5.2.2.1 304 stainless steel,
efficiency.
5.2.2.2 Aluminum alloy 6061 (or 5051),
6.2 Test Methods:
5.2.2.3 Carbon steel 1018,
6.2.1 A suggested starting level of contamination is 1000
5.2.2.4 Admiralty brass CDA 443,
mg/m . This is a hydrocarbon level that is consistent with
5.2.2.5 Monel 400,
contamination levels associated with final cleaning and it is
5.2.2.6 4130X low alloy steel,
twice the acceptable level specified for oxygen service in CGA
5.2.2.7 Inconel 718,
pamphlet G.4.1. Heavily contaminated surfaces with levels in
5.2.2.8 Copper,
excess of 1000 mg/m must be precleaned using more aggres-
5.2.2.9 Tin-bronze, and
sive cleaning agents with mechanical scrubbing (Practice
5.2.2.10 Cobalt alloy 188.
G 93). Precleaning is not a cleaning step with which this guide
5.3 Nonmetallic Materials:
is concerned.
5.3.1 Nonmetallic materials commonly used in oxygen
service are discussed in Guide G 63. 6.2.2 Contaminants may be applied to the specimens by any
of the means specified in Practice G 121.
5.3.2 Nonmetallic materials representative of numerous ap-
plications in oxygen systems and suitable for inclusion in a test
6.2.3 The cleaning
...