ASTM D3612-01

Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography

SCOPE
1.1 This test method covers three procedures for extraction and measurement of gases dissolved in electrical insulating oil having a viscosity of 20 cSt (100 SUS) or less at 40oC (104oF), and the identification and determination of the individual component gases extracted. Other methods have been used to perform this analysis.
1.2 The individual component gases that may be identified and determined include: Hydrogen-H2 Oxygen-O2 Nitrogen-N2 Carbon monoxide-CO Carbon dioxide-CO2 Methane-CH4 Ethane-C2H6 Ethylene-C2H4 Acetylene-C2H2 Propane-C3H8 Propylene-C3H6
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.  For specific precautionary statements see 6.1.8.

General Information

• Status: Historical
• Publication Date: 09-Feb-2001
• ICS: 29.040.10 - Insulating oils
• Technical Committee: D27 - Electrical Insulating Liquids and Gases
• Drafting Committee: D27.03 - Analytical Tests

Relations

• Replaces: ASTM D3612-96 - Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
• Effective Date: 10-Feb-2001
• Replaced By: ASTM D3612-02 - Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
• Effective Date: 10-Oct-2002
• Referred By: ASTM D7150-13(2020) - Standard Test Method for the Determination of Gassing Characteristics of Insulating Liquids Under Thermal Stress
• Effective Date: 10-Feb-2001
• Referred By: ASTM D5837-15 - Standard Test Method for Furanic Compounds in Electrical Insulating Liquids by High-Performance Liquid Chromatography (HPLC)
• Effective Date: 10-Feb-2001
• Referred By: ASTM D3284-05(2019) - Standard Practice for Combustible Gases in the Gas Space of Electrical Apparatus Using Portable Meters
• Effective Date: 10-Feb-2001
• Referred By: ASTM D8086-20 - Standard Test Method for Determination of Methanol and Ethanol in Electrical Insulating Liquids of Petroleum Origin by Headspace (HS)-Gas Chromatography (GC) Using Mass Spectrometry (MS) or Flame Ionization Detection (FID)
• Effective Date: 10-Feb-2001
• Referred By: ASTM E800-20 - Standard Guide for Measurement of Gases Present or Generated During Fires
• Effective Date: 10-Feb-2001
• Referred By: ASTM D117-22 - Standard Guide for Sampling, Test Methods, and Specifications for Electrical Insulating Liquids
• Effective Date: 10-Feb-2001
• Referred By: ASTM D923-15 - Standard Practices for Sampling Electrical Insulating Liquids
• Effective Date: 10-Feb-2001
• Referred By: ASTM D5282-05(2020) - Standard Test Methods for Compatibility of Construction Material with Silicone Fluid Used for Electrical Insulation
• Effective Date: 10-Feb-2001

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 3612 – 01
Standard Test Method for
Analysis of Gases Dissolved in Electrical Insulating Oil by
1
Gas Chromatography
This standard is issued under the fixed designation D 3612; 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 4051 Practice for Preparation of Low-Pressure Gas
3
Blends
1.1 This test method covers three procedures for extraction
4
E 260 Practice for Packed Column Gas Chromatography
and measurement of gases dissolved in electrical insulating oil
2.2 IEEE Standard:
having a viscosity of 20 cSt (100 SUS) or less at 40°C (104°F),
C 57.104 Guide for the Interpretation of Gases Generated in
and the identification and determination of the individual
5
Oil-Immersed Transformers
component gases extracted. Other methods have been used to
2.3 IEC Standard:
perform this analysis.
Publication No. 567 Guide for the Sampling of Gases and
1.2 The individual component gases that may be identified
of Oil from Oil-Filled Electrical Equipment and for the
and determined include:
6
Analysis of Free and Dissolved Gases
Hydrogen—H
2
Oxygen—O
2
3. Terminology
Nitrogen—N
2
Carbon monoxide—CO
3.1 Definitions of Terms Specific to This Standard:
Carbon dioxide—CO
2
3.1.1 gas content of oil by volume—in Method A, the total
Methane—CH
4
Ethane—C H
2 6 volume of gases, corrected to 760 torr (101.325 kPa) and 0°C,
Ethylene—C H
2 4
contained in a given volume of oil, expressed as a percentage.
Acetylene—C H
2 2
In Methods B and C, the sum of the individual gas concentra-
Propane—C H
3 8
Propylene—C H
3 6 tions corrected to 760 torr (101.325 kPa) and 0°C, expressed in
percent or parts per million.
1.3 This standard does not purport to address all of the
3.1.2 headspace—a volume of gas phase in contact with a
safety concerns, if any, associated with its use. It is the
volume of oil in a closed vessel. The vessel is a headspace vial
responsibility of the user of this standard to establish appro-
of 20-mL nominal capacity.
priate safety and health practices and determine the applica-
3.1.2.1 Discussion—Other vessel volumes may also be
bility of regulatory limitations prior to use. For specific
used, but the analytical performance may be somewhat differ-
precautionary statements see 6.1.8.
ent than that specified in Method C.
2. Referenced Documents
3.1.3 parts per million (ppm) by volume of (specific gas) in
oil—the volume of that gas corrected to 760 torr (101.325 kPa)
2.1 ASTM Standards:
6
and 0°C, contained in 10 volume of oil.
D 2140 Test Method for Carbon-Type Composition of In-
2
3.1.4 sparging, v—agitating the liquid sample using a gas to
sulating Oils of Petroleum Origin
strip other gases free.
D 2300 Test Method for Gassing of Insulating Oils Under
2
3.1.5 volume concentration of (specific gas) in the gas
Electrical Stress and Ionization Modified Pirelli Method
sample—the volume of the specific gas contained in a given
D 2779 Test Method for Estimation of Solubility of Gases
3
volume of the gas sample at the same temperature and pressure
in Petroleum Liquids
(as the measured total volume), expressed either as a percent-
D 2780 Test Method for Solubility of Fixed Gases in
3
age or in parts per million.
Liquids
D 3613 Test Methods of Sampling Electrical Insulating Oils
4. Summary of Test Method
2
for Gas Analysis and Determination of Water Content
4.1 Method A—Dissolved gases are extracted from a sample
of oil by introduction of the oil sample into a pre-evacuated
1
This test method is under the jurisdiction of ASTM Committee D27 on known volume. The evolved gases are compressed to atmo-
Electrical Insulating Liquids and Gases and is the direct responsibility of Subcom-
spheric pressure and the total volume measured.
mittee D27.03 on Analytical Tests.
Current edition approved Feb. 10, 2001. Published April 2001. Originally
4
published as D 3612 – 77. Last previous edition D 3612 – 96. Annual Book of ASTM Standards, Vol 14.02.
2 5
Annual Book of ASTM Standards, Vol 10.03. Available from IEEE, 345 E. 47th St., New York, NY 10017.
3 6
Annual Book of ASTM Standards, Vol 05.02. Available from IEC.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 3612
4.2 Method B—Dissolved gases are extracted from a sample 5. Significance and Use
of oil by sparging the oil with the carrier gas on a stripper
5.1 Oil and oil-immersed electrical insulatio
...