ASTM-G93 2011

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G93-03(2011) Standard Practice for Cleaning Methods and Cleanliness Levels for Material and Equipment Used in Oxygen-Enriched Environments

Published By	Publication Date	Number of Pages
ASTM	2011	22

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Categories: 71.040.20 - Laboratory ware and related apparatus, ASTM

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Description

ASTM G93-03-Reapproved2011

Historical Standard: Standard Practice for Cleaning Methods and Cleanliness Levels for Material and Equipment Used in Oxygen-Enriched Environments

ASTM G93

Scope

1.1 This practice covers the selection of methods and apparatus for cleaning materials and equipment intended for service in oxygen-enriched environments. Contamination problems encountered in the use of enriched air, mixtures of oxygen with other gases, or any other oxidizing gas may be solved by the same cleaning procedures applicable to most metallic and nonmetallic materials and equipment. Cleaning examples for some specific materials, components, and equipment, and the cleaning methods for particular applications, are given in the appendices.

1.2 This practice includes levels of cleanliness used for various applications and the methods used to obtain and verify these levels.

1.3 This practice applies to chemical-, solvent-, and aqueous-based processes.

1.4 This practice describes nonmandatory material for choosing the required levels of cleanliness for systems exposed to oxygen or oxygen-enriched atmospheres.

1.5 This practice proposes a practical range of cleanliness levels that will satisfy most system needs, but it does not deal in quantitative detail with the many conditions that might demand greater cleanliness or that might allow greater contamination levels to exist. Furthermore, it does not propose specific ways to measure or monitor these levels from among the available methods.

1.6 The values stated in both inch-pound and SI units are to be regarded separately as the standard unit. The values given in parentheses are for information only.

1.7 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. Federal, state and local safety and disposal regulations concerning the particular hazardous materials, reagents, operations, and equipment being used should be reviewed by the user. The user is encouraged to obtain the Material Safety Data Sheet (MSDS) from the manufacturer for any material incorporated into a cleaning process. Specific cautions are given in Section 8.

Keywords

cleaning; contamination control; oxygen; oxygen-enriched environments; oxygen service; oxygen systems; Cleaning agents/processes; Contamination–systems (materials/applications); Environmental monitoring; Environmental organic compounds; Environments (gaseous); Inorganic contaminants; Mechanical cleaning; Nonmetallic materials; Oxygen-enriched systems/environments; Particulates; Thermal cleaning effects; Chemical cleaning; Cleaning agents/processes; Contamination–systems (materials/applications); Environmental monitoring; Environmental organic compounds; Environments (gaseous); Inorganic contaminants; Mechanical cleaning; Nonmetallic materials; Oxygen-enriched systems/environments; Particulates; Thermal cleaning effects; Chemical cleaning

ICS Code

ICS Number Code 71.040.20 (Laboratory ware and related apparatus)

DOI: 10.1520/G0093-03R11

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology Summary of Practice Significance and Use TABLE 1
3	Interferences Conditioning Cleaning Methods
5	TABLE 2
6	TABLE 3
7	TABLE 4
8	TABLE 5
9	Cleaning Procedures Cleanliness Requirements
11	Inspection TABLE 6
14	Packaging and Package Marking Maintaining Cleanliness During Assembly Ordering Information Keywords
15	X1. EXAMPLE NUMBER 1—CLEANING OF CARBON STEEL PIPING X1.1 X2. EXAMPLE NUMBER 2—CLEANING COPPER, BRASS, OR STAINLESS STEEL X2.1 TABLE X1.1
16	X3. EXAMPLE NUMBER 3—REMOVING SILICONE COMPOUNDS AND GREASES FROM GLASS, PORCELAIN, AND OTHER CERAMICS X3.1 X3.2 X3.3 X3.4 X3.5 X3.6 X4. EXAMPLE NUMBER 4—REMOVING SILICONE COMPOUNDS AND GREASE FROM TIN, ALUMINUM, AND ZINC ALLOYS X4.1 X4.2 X4.3 X4.4 X4.5 X4.6 X5. EXAMPLE NUMBER 5—REMOVING SILICONE COMPOUNDS AND GREASES FROM STEEL, IRON, IRON ALLOYS, COPPER, AND COPPER ALLOYS X5.1 X5.2 X5.3 X5.4 X5.5 X5.6 X6. EXAMPLE NUMBER 6—CLEANING OF MACHINED BRASS BAR STOCK REGULATOR BODY (FREE CUTTING BRASS CDA-360) FOR 4500 PSIG GASEOUS OXYGEN SERVICE X6.1 X7. EXAMPLE NUMBER 7—CLEANING OF AUSTENITIC, FERRITIC, MARTENSITIC AND PRECIPITATION HARDENED STAINLESS STEELS X7.1
17	X8. EXAMPLE NUMBER 8—FIELD REMOVAL OF AEROCOAT AR-7 COATING USING A HIGH-PRESSURE WATER BLAST SYSTEM X8.1 Conditions X8.2 Cleaning Procedure X8.3 Safety Precautions
18	X9. EXAMPLE NUMBER 9—CLEANING OF HIGH PRESSURE GASEOUS STORAGE VESSELS (UNLINED VESSELS) X9.1 Scope X9.2 Mechanical Cleaning X9.3 Final Closure Weld X9.4 Preliminary Sealing X9.5 Post-Weld Heat Treatment (PWHT) X9.6 Hydrostatic Testing X9.7 General X9.8 Degreasing X9.9 Preliminary Rinse X9.10 Pickling X9.11 Intermediate Rinse X9.12 Citric Acid Flush
19	X9.13 Final Rinse and Passivation Surface Treatment X9.14 Examination Number 1 X9.15 Examination Number 2 X9.16 Sealing X9.17 Drying X9.18 Pressurizing X10. EXAMPLE NUMBER 10—CLEANING OF HIGH PRESSURE GASEOUS STORAGE VESSELS (STAINLESS STEEL LINED VESSELS) X10.1 Scope X10.2 Mechanical Cleaning
20	X10.3 Preliminary Sealing X10.4 Postweld Heat Treatment X10.5 Liner Completion X10.6 Hydrostatic Testing X10.7 Penetrant Inspection X10.8 General X10.9 Preliminary Rinse X10.10 Passivation X10.11 Intermediate Rinse X10.12 Degreasing X10.13 Intermediate Rinse X10.14 Final Rinse X10.15 Examination Number 1
21	X10.16 Examination Number 2 X10.17 Sealing X10.18 Drying X10.19 Pressurizing X11. CLEANING OF CONVOLUTED STAINLESS STEEL HOSES X11.1 X11.2 X11.3
22	REFERENCES TABLE X11.1

Additional information

Standard Title	G93-03(2011) Standard Practice for Cleaning Methods and Cleanliness Levels for Material and Equipment Used in Oxygen-Enriched Environments
Published Code	ASTM
Publication Date	2011
Pages Count	22
ICS Codes	71.040.20 - Laboratory ware and related apparatus