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Uganda proposed standards for Lubricants, industrial oils and related products

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Uganda proposed standards for Lubricants, industrial oils and related products

Uganda National Bureau of Standards proposed following:

1) DUS 2051:2018 Standard Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation in a Spark-Ignition Internal Combustion Engine Fuelled with Gasoline and Operated Under Low-Temperature, Light-Duty Conditions:

Uganda Standard covers and is commonly referred to as the Sequence VG test, and it has been correlated with vehicles used in stop-and-go service prior to 1996, particularly with regard to sludge and varnish formation. It is one of the test methods required to evaluate oils intended to satisfy the API SL performance category.

2) DUS 2050:2018 Standard Test Method for Evaluation of Rust Preventive Characteristics of Automotive Engine Oils:

Uganda Standard covers an estimation of the amount of engine oil volatilized at 371°C (700°F). This test method can also be used to estimate the amount of oil volatilized at any temperature between 126°C and 371°C, if so desired.

This test method is limited to samples having an initial boiling point (IBP) greater than 126°C (259°F) or the first calibration point and to samples containing lubricant base oils with end points less than 615°C (1139°F) or the last n-paraffins in the calibration mixture. By using some instruments and columns, it is possible to extend the useful range of the test method.

The test method uses the principles of simulated distillation methodology and may be applied to both lubricant oil base stocks and finished lubricants containing additive packages. These additive packages generally contain high molecular weight, nonvolatile components that do not elute from the chromatographic column under the test conditions.

The calculation procedure used in this test method assumes that all of the sample elutes from the column and is detected with uniform response. This assumption is not true for samples with nonvolatile additives, and application of this test method under such conditions will yield results higher than expected. For this reason, results by this test method are reported as area percent of oil.

3) DUS 2049:2018 Standard Test Method for Estimation of Engine Oil Volatility by Capillary Gas Chromatography:

Uganda Standard covers the test method for the estimation of the amount of engine oil volatilized at 371°C (700°F). This test method can also be used to estimate the amount of oil volatilized at any temperature between 126°C and 371°C, if so desired.

This test method is limited to samples having an initial boiling point (IBP) greater than 126°C (259°F) or the first calibration point and to samples containing lubricant base oils with end points less than 615°C (1139°F) or the last n-paraffins in the calibration mixture. By using some instruments and columns, it is possible to extend the useful range of the test method.

This test method uses the principles of simulated distillation methodology. This test method may be applied to both lubricant oil base stocks and finished lubricants containing additive packages. These additive packages generally contain high molecular weight, nonvolatile components that do not elute from the chromatographic column under the test conditions. The calculation procedure used in this test method assumes that all of the sample elutes from the column and is detected with uniform response. This assumption is not true for samples with nonvolatile additives, and application of this test method under such conditions will yield results higher than expected. For this reason, results by this test method are reported as area percent of oil.

4) DUS 2048 Standard test method for determination of high temperature deposits by thermos oxidation engine oil simulation test:

Uganda Standard covers the test method for the procedure to determine the amount of deposits formed by automotive engine oils utilizing the thermo-oxidation engine oil simulation test (TEOST).

5) DUS 2047:2018 Standard test method for high temperature foaming characteristics of lubricating oils:

Uganda Standard covers the procedure for determining the foaming characteristics of lubricating oils (specifically transmission fluid and motor oil) at 150°C.

6) DUS 2046:2018 Standard test method for evaporation loss of lubricating oils by the Noack method:

Uganda Standard covers four procedures for determining the evaporation loss of lubricating oils (particularly engine oils). Procedure A uses the Noack evaporative tester equipment; Procedure B uses the automated non-Woods metal Noack evaporative apparatus; Procedure C uses Selby-Noack volatility test equipment, and Procedure D uses the Noack S2 test equipment. The test method relates to one set of operating conditions but may be readily adapted to other conditions when required.

Noack results determined using Procedures A and C provide equivalent results and Procedures B and D provide equivalent results. However, A/C compared to B/D show consistent differences. Procedure A/C give slightly lower results versus Procedure B/D on formulated engine oils, while Procedure A/C give higher results versus Procedure B/D on base stocks.

7) DUS 2045:2018 Standard test method for determination of additive elements in lubricating oils by inductively coupled plasma atomic emission spectrometry:

Uganda Standard covers the test method for the quantitative determination of barium, boron, calcium, copper, magnesium, molybdenum, phosphorus, sulfur, and zinc in unused lubricating oils and additive packages. 

The precision statements are valid for dilutions in which the mass % sample in solvent is held constant in the range of 1 to 5 mass % oil. The precision tables define the concentration ranges covered in the interlaboratory study. However, both lower and higher concentrations can be determined by this test method. The low concentration limits are dependent on the sensitivity of the ICP instrument and the dilution factor. The high concentration limits are determined by the product of the maximum concentration defined by the linear calibration curve and the sample dilution factor. 

Sulfur can be determined if the instrument can operate at a wavelength of 180 nm. The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

8) DUS 2044:2018 Standard test method for determination of yield stress and apparent viscosity of used engine oils at low temperature:

Uganda Standard covers the test method for the measurement of the yield stress and viscosity of engine oils after cooling at controlled rates over a period exceeding 45h to a final test temperature between -10°C and -40°C. The precision is stated for test temperatures from -40°C to -15°C. The viscosity measurements are made at a shear stress of 525 Pa over a shear rate of 0.4 s-1 to 15 s-1. This test method is suitable for measurement of viscosities ranging from 4000 mPas to >400000 mPas, and is suitable for yield stress measurements of 7 Pa to >350 Pa. This test method is applicable for used diesel oils. The applicability and precision to other used or unused engine oils or to petroleum products other than engine oils has not been determined.

9) DUS 2043:2018 Standard Test Method for Measuring Viscosity of New and Used Engine Oils at High Shear Rate and High Temperature by Tapered Bearing Simulator Viscometer at 150°C:

Uganda Standard covers the test method for the laboratory determination of the viscosity of engine oils at 150°C and 1.0·106 s−1 using a viscometer having a slightly tapered rotor and stator called the Tapered Bearing Simulator (TBS) Viscometer.

10) FDUS 2041:2018, Standard Test Method for Foaming Characteristics of Lubricating Oils:

Uganda Standard covers the test method for the determination of the foaming characteristics of lubricating oils at 24°C and 93.5°C. Means of empirically rating the foaming tendency and the stability of the foam are described.

Products covered: Automotive Engine Oils

HS code: 3403

Proposed date of adoption: December, 2018

Proposed date of entry into force: NA

Final date for comments: 13-12-2018

If the Proposal/Notification/Regulation will affect your International Business please send us your representation with facts and figures , so that these can be taken up suitably.

 


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