Low Sulphur Heavy Stock (LSHS) is a residual fuel processed from crude oil. This fuel is used mainly in applications similar to furnace oils.The difference between LSHS and Furnace oil is Higher Pour Point, High calorific Value and Low Sulphur Content. As this fuel has higher pour point than that of FO it requires special handling arrangements. LSHS is handled hot at all stages and is always maintained above 70OC.
Chem-TechTM fuel Quality monitoring programs monitors the fuels for possible contaminants like water, Used Lubes, Asphalt and other possible adulterants. Testing Furnace oil ensures conformance to regulatory specifications.
Chem-TechTM tests this residual fuel to National specifications to check the quality of fuels used in Burners, Boilers and Heavy Duty Engines etc.
Chem-TechTM LSHS Fuel Testing Facility conducts the following tests as per internationally accepted ASTM & ISO Test Standards.
Click to get list of Tests conducted by the laboratory on Low Sulphur Heavy Stock:Test List Test Methods
Density is fundamental characteristic of any petroleum product. It is the measurement of weight per volume of the sample.
It is measured by:
Methods Adopted by Chem-Tech for Density Determination:
Kinematic Viscosity is a measurement of the resistance of the oil to flow through a capillary tube of the viscometer. It is the most fundamental property of a lubricant. Viscosity of lubricants is measured in case of fresh oils to check the Grade of the oil . in case of used oils it gives idea about change in physical properties due to oxidation, dilution or any external contamination. It is the most fundamental property for testing of any lubricant or petroleum product.
Methods Adopted by Chem-Tech for Viscosity Determination:
Water or Moisture is the most common contaminant in any lubricant or petroleum product. Monitoring the level water in sample is of prime importance to avoid malfunctioning of the equipment or machine.
Water content in petroleum products can be determined by following 4 test methods:
Methods Adopted by Chem-Tech for Water / Moisture Content Determination:
Flash Point is the lowest temperature at which the vapours of the petroleum product catches fire momentarily in presence of air when an ignition source is applied to the sample.
Flash point are normally conducted by three methods:
Methods Adopted by Chem-Tech for Flash Point Determination:
Conradson Carbon Residue Test covers the determination of the amount of carbon residue left after evaporation and pyrolysis of an oil. This test is intended to provide some indication of relative coke-forming properties of Lubricant.
Methods adopted by Chem-Tech for Determination of Conradson Carbon Residue:
This test determines the total sediments present in petroleum . This is a Chem-Tech Laboratories validated method, It is modification of ASTM D 893 for determination of Total Insoluble content in Toluene. It is a centrifugal method for determination of Insoluble content.
It determines wear metals, dirt dust and debris present in petroleum products & Lubricants.
This test method covers the determination of ash in the range 0.001–0.180 mass %, from distillate and residual fuels, gas turbine fuels, crude oils, lubricating oils, waxes, and other petroleum products, in which any ash-forming materials present are normally considered to be undesirable impurities or contaminants . The test method is limited to petroleum products which are free from added ash-forming additives, including certain phosphorus compounds and Organo Metallic Additives.
Ash can result from oil or water-soluble metallic compounds or from extraneous solids such as dirt and rust.
Methods adopted by Chem-Tech for Determination of Ash Content:
Gross Calorific Value is determination of amount energy generated when fuels are burned in presence of Oxygen Environment. It is the amount of heat released during the combustion process for a specific amount of Fuel.
Methods adopted by Chem-Tech for Determination of Toluene Insoluble Content: