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ASTM D6802-02(2010)

(Test Method)

Test Method for Determination of the Relative Content Of Dissolved Decay Products in Mineral Insulating Oils by Spectrophotometry (Withdrawn 2019)

Test Method for Determination of the Relative Content Of Dissolved Decay Products in Mineral Insulating Oils by Spectrophotometry (Withdrawn 2019)

SIGNIFICANCE AND USE
The content of dissolved decay products in insulating oils is made up of a variety of compounds, such as peroxides, aldehydes, ketones, and organic acids. Each of them is partially adsorbed on the large surface of paper insulation leading to the premature aging of power transformers. The relative assessment of byproduct formation, therefore, can be used as an indicator of the aging of the mineral oil.
SCOPE
1.1 This test method characterizes by spectrophotometry the relative level of dissolved decay products in mineral insulating oils of petroleum origin. While new oil is almost transparent to a monochromatic beam of light in the visible spectrum, the increasing concentration of dissolved decay products shift the absorbance curve to longer wavelengths.
1.2 This test method is applicable to compare the extent of dissolved decay products for oils in service. It can assess the effectiveness of used or stored oil purification during the reclamation process, as well.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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 to determine the applicability of regulatory limitations prior to use.
WITHDRAWN RATIONALE
This test method characterizes by spectrophotometry the relative level of dissolved decay products in mineral insulating oils of petroleum origin. While new oil is almost transparent to a monochromatic beam of light in the visible spectrum, the increasing concentration of dissolved decay products shift the absorbance curve to longer wavelengths.
Formerly under the jurisdiction of Committee D27 on Electrical Insulating Liquids and Gases, this test method was withdrawn in January 2019 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

Status
Withdrawn
Publication Date
14-Jun-2010
Withdrawal Date
27-Jan-2019
ICS
71.040.50 - Physicochemical methods of analysis
Technical Committee
D27 - Electrical Insulating Liquids and Gases
Drafting Committee
D27.03 - Analytical Tests
Current Stage
Ref Project

Relations

Replaces
ASTM D6802-02 - Test Method for Determination of the Relative Content Of Dissolved Decay Products in Mineral Insulating Oils by Spectrophotometry
Effective Date
15-Jun-2010

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ASTM D6802-02(2010) - Test Method for Determination of the Relative Content Of Dissolved Decay Products in Mineral Insulating Oils by Spectrophotometry (Withdrawn 2019)ASTM D6802-02(2010) - Test Method for Determination of the Relative Content Of Dissolved Decay Products in Mineral Insulating Oils by Spectrophotometry (Withdrawn 2019)
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ASTM D6802-02(2010) - Test Method for Determination of the Relative Content Of Dissolved Decay Products in Mineral Insulating Oils by Spectrophotometry (Withdrawn 2019)
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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: D6802 − 02 (Reapproved 2010)
Test Method for
Determination of the Relative Content Of Dissolved Decay
Products in Mineral Insulating Oils by Spectrophotometry
This standard is issued under the fixed designation D6802; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 aged oil, n—an oil that no longer complies with the
standard specifications for mineral insulating oils used in
1.1 Thistestmethodcharacterizesbyspectrophotometrythe
electrical apparatus according to D3487.
relative level of dissolved decay products in mineral insulating
oilsofpetroleumorigin.Whilenewoilisalmosttransparentto
4. Summary of Test Method
a monochromatic beam of light in the visible spectrum, the
increasing concentration of dissolved decay products shift the
4.1 A test specimen of mineral insulating oil is placed in a
absorbance curve to longer wavelengths.
10-mm path length glass cuvette, which is installed in an
UV-VIS scanning spectrophotometer. The instrument is first
1.2 This test method is applicable to compare the extent of
zeroed with spectral grade heptane. The absorbance curve of
dissolved decay products for oils in service. It can assess the
oilisthenrecordedfrom360to600nm.Integrationofthearea
effectiveness of used or stored oil purification during the
under this curve indicates the numeric value of the dissolved
reclamation process, as well.
decay products in the oil sample. Because of the high sensi-
1.3 The values stated in SI units are to be regarded as
tivity of spectral analysis, the deterioration of oil purity can be
standard. No other units of measurement are included in this
assessed in the early stages of the decay process.
standard.
5. Significance and Use
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.1 The content of dissolved decay products in insulating
responsibility of the user of this standard to establish appro-
oils is made up of a variety of compounds, such as peroxides,
priate safety and health practices and to determine the
aldehydes,ketones,andorganicacids.Eachofthemispartially
applicability of regulatory limitations prior to use.
adsorbed on the large surface of paper insulation leading to the
premature aging of power transformers. The relative assess-
2. Referenced Documents
ment of byproduct formation, therefore, can be used as an
indicator of the aging of the mineral oil.
2.1 ASTM Standards:
D923Practices for Sampling Electrical Insulating Liquids
6. Interferences
D1524Test Method for Visual Examination of Used Elec-
trical Insulating Oils of Petroleum Origin in the Field
6.1 The condition of the oil specimen should be clear
D3487Specification for Mineral Insulating Oil Used in
according to the requirement of Test Method D1524.
Electrical Apparatus
6.2 The oil specimen, therefore, should be filtered through
50-µm filter paper.
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
7. Apparatus
7.1 Recording UV-Visible Automated Spectrophotometer,
capable of scanning the range between 360 and 600 nm is
This test method is under the jurisdiction of Committee D27 on Electrical
required. The software should permit the calculation of area
Insulating Liquids and Gasesand is the direct responsibility of Subcommittee
D27.03 on Analytical Tests. under the absorbance curve of the oil specimen.
Current edition approved June 15, 2010. Published August 2010. Originally
approved in 2002. Last previous edition approved in 2002 as D6802–02. DOI:
8. Reagents and Materials
10.1520/D6802-02R10.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
8.1 Absorption Cuvettes—To determine the absorbance
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
curve of a mineral insulating oil, two matched glass cuvettes
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. having a path length of 1-cm 6 0.01-cm should be used.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6802 − 02 (2010)
8.2 Cuvette Filling Device—Adisposable plastic dropper of 13.3 Comparison of this area to the area of typical new oil,
2-mL capacity is recommended; however, any other suitable which is usually less than 25Abs. × nm, represents the relative
pipette may be used. content of dissolved decay products.
8.3 Petroleum Spirits, of 60–80°C boiling range.
14. Precision and Bias
8.4 Heptane, spectral grade.
14.1 Precision—The precision of this test method has not
been investigated through an interlaboratory test program.
9. Sampling
14.1.1 Repe
...

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ASTM
ASTM D7515-19(2023)(Test Method)
Standard Test Method for Purity of 1,3-Propanediol (Gas Chromatographic Method)

SIGNIFICANCE AND USE
4.1 Knowledge of an approved method is required to establish whether the product meets the requirements of its specifications. The use of glycols in the reference sample is not intended to suggest the presence of glycol (EG, PG and DPG) impurities, but to demonstrate and quantify the separation of commonly used Engine Coolant glycols from PDO.
SCOPE
1.1 This test method describes the gas chromatographic determination of purity for 1,3-propanediol (PDO). This test method was originally developed to determine the purity of 1,3-propanediol used for the application as the freeze point depressant base fluid in formulated PDO engine coolants. Use of the method for purity of PDO for other applications may be viable.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.2.1 Exception—Inch-pound units (psi) are used in Table 1, Pressure Program, Options A and B.  
1.3 Review the current Material Safety Data Sheets (MSDS) for detailed information concerning toxicity, first aid procedures, and safety precautions.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

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