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Quality of Day to Day Use Petroleum Products in India

Updated on April 22, 2020
shreekrishna sharma profile image

The Author is having experience in Fertilizer industry for 20 years and 19 years in Refinery Quality Control Laboratory.

Petroleum Quality is Important

In our daily life, we are depending on vehicles for transportation of persons, commodities, cargos etc. which requires energy and most of it is met by fossil fuels manufactured by refineries. It is better to understand the quality of petroleum products in use and the precautions to be taken while handling these products at our level.

Quality of the product is very essential for the proper functioning of the vehicles under the use and to avoid unexpected breakdowns, leading not only to inconvenience but also loss of time, money and manpower for frequent visits to service centres. In view of this, it is better to have some knowledge about petroleum product and its functioning.

What is Petroleum Refining?

Refining is the process, where crude material is used as raw material and high-value products are obtained under strict quality control processes. For petroleum refining, the raw material used is crude oil which is a mixture of hydrocarbons normally found beneath the surface of the earth. The main suppliers to India are Iran, Iraq, Saudi Arabia, Kuwait, UAE and so on. The capacity of the refinery is indicated in million metric tonnes (MMT) per year, which means that it processes that much huge quantity of crude oil per year.

Refinery
Refinery

Role of Quality Control in Refineries

As the quality of end products should meet the specifications stipulated by the governing agencies as well as the vehicle manufacturing companies, strict quality control is required at the refineries where the products are delivered. Quality control laboratory tests the final products as well as the raw materials and the intermediate products so as to meet the quality of the end product.

How Quality is Achieved?

The laboratory follows the specified method for testing the various parameters by the specifications related to the particular products. It is equipped with sophisticated instruments which are well maintained and calibrated with frequent interval. Chemists are well trained and have knowledge of the working of instruments and the day to day maintenance. Laboratory follows standards such as Bureau of Indian Standards (BIS), Institute of Petroleum (IP), American Society for Testing and Materials (ASTM) and

International Organization for Standardization (ISO) for testing the products. Laboratories are also accredited by National Accreditation Board for Testing and Calibration (NABL), which is the accreditation body in India in the implementation of ISO 17025 (General requirements for the competence of testing and calibration laboratories). This standard gives the confidence to the customers the technical competence of the quality control laboratory.

Domestic Petroleum Products in Use

1. Liquefied Petroleum Gas (LPG)

LPG is the common fuel used mainly for household cooking and in some automobile, is a colorless gas and is a mixture of commercial propane and butane normally in the ratio 25:75. The density is around 0.520 to 0.58 gm/cc at 15°C which indicates that it is heavier than air but much lighter than water. Ethyl mercaptan is doped to the product which gives a pungent smell to identify any leakage during use. Observation of any leak should be handled carefully by isolating the main valve of the cylinder. As a safety measure, it is always better to turn off the valve while not in use. The product should meet the specifications of IS 4576 standard.

2. Naphtha

Naphtha is one of the products from refinery which is directly not used by the common man as fuel in our day to day requirement. It is a highly inflammable liquid mainly used as solvent, diluents and in industries such as fertilizers, and to produce petrol in the refinery.

3. Motor Gasoline (MG)

Commonly known as petrol, which is manufactured using naphtha as the raw material. This is commonly used in 2-stroke and 4-stroke automobile engines such as two-wheelers and four-wheelers. The product is highly volatile and required most care while handling. The density varies in the range of 720 to 775 kg/m3. One of the major parameters in the quality is the research octane number (RON), which is determined using octane engine in the laboratory. At present, the minimum requirement is 91 . The engines are tuned to have optimum output for this quality. Multifunctional additives are doped at the refinery level. This acts as antioxidant, reduction in intake valve deposit, combustion chamber deposits as well decreases the CO and HC emissions. Marketing companies such as HPCL, IOC, BPCL are doping the fuel with additional multifunctional additives and markets as premium grade petrol. As per the requirements of the Government of India, ethanol blending is also done by marketing companies to the extent of 10% by volume. This reduces the exhaust emission and gives boost to the sugar industries where molasses is used as raw material for the production of ethanol. An orange dye is added to distinguish the product from other colourless petroleum products such as naphtha. The product meets the requirement of IS 2796 standard.

BS-VI specification is in force from April 2020, to reduce the emissions. The sulphur content is reduced from 50 ppm to 10 ppm in comparison with BS-IV specification.

Research Octane Engine for the determination of RON in petrol
Research Octane Engine for the determination of RON in petrol

4. Superior Kerosene Oil (SKO)

Generally known as kerosene, SKO is mainly used for lighting the lamps and stoves for cooking purpose. Earlier it was also used by the Indian Railways for their lamps at signalling units. Public distribution system provides kerosene with blue dye so as to distinguish with open market kerosene which is colourless. As per non-smoking kitchen concept of the Indian government, kerosene usage for cooking use is abandoned and replaced by LPG by ‘Ujjwala Yojana’. This product has to meet the IS 1459 standard.

However, one of the fractions from kerosene is used in the manufacture of linear alkylbenzene, which is used in the manufacture of detergents.

5. Aviation Turbine Fuel (ATF)

Also known as jet fuel, ATF is used in jet engines (Aeroplanes), it is one of the most stringent quality control requirement product. The production, quality control, storage and despatch are governed by Directorate General of Civil Aviation (DGCA), Directorate General of Aeronautical Quality Assurance (DGAQA) and Centre for Military Airworthiness Certification (CEMILAC) for defence purpose. The product has to meet the IS 1571 standard.

6. Automotive Diesel Fuel (ADF)

Commonly known as diesel, ADF is widely used for the automotive purpose such as trucks, cars, railway engines, electric generators and so on. The density varies in the range of 810 to 845 kg/m3. Cetane number is one of the characteristic parameters of the product, which is determined using the standard engine at the laboratory and the minimum requirement is 51. The product has to meet the IS 1460 standard.

BS-VI specification is in force from April 2020, to reduce the emissions. The sulphur content is reduced from 50 ppm to 10 ppm in comparison with BS-IV specification.

Cetane Engine for the determination of Cetane number in ADF
Cetane Engine for the determination of Cetane number in ADF | Source

Quality Assurance by Customer

While the quality of the product is very much essential for the smooth functioning of vehicles, quantity also has to be assured for the price paid.

LPG cylinder indicates the tare weight and the quantity of LPG filled. By weighing the cylinder the quantity may be assured.

Petrol/diesel retail outlet is equipped with measuring cylinders and hydrometers to check the density. Quality certificate issued by the refinery will be available with them which may be cross-checked with the quality of the product. To check the quantity, all the outlets should have 5.0 litre measuring cans (with the certification of calibration).

Filter paper test may be carried out to check the purity of petrol by placing a few drops on it. On evaporation, if there is no residue, it may be assured of quality.

It is always better to fill the tank during cooler morning hours, as the price is paid for the volume and it increases with the increase in ambient temperature.

Petroleum Conservation Research Association (PCRA)

PCRA has given guidelines for the conservation of petroleum products, which may be followed. Fossil fuel is non-renewable and it is need of the hour to save petroleum products from inappropriate uses.

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2020 SHREEKRISHNA SHARMA HALEMANE

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    • shreekrishna sharma profile imageAUTHOR

      SHREEKRISHNA SHARMA HALEMANE 

      11 months ago from MANGALORE

      Thank you Geeta K

    • shreekrishna sharma profile imageAUTHOR

      SHREEKRISHNA SHARMA HALEMANE 

      11 months ago from MANGALORE

      Thank you Sowspeaks. It was my intention that even a layman should have some knowledge about the petroleum products which are in use daily

    • Sowrabha Mahesh profile image

      sowspeaks 

      11 months ago from Bengaluru

      Wonderful article .... your article was scholarly and gave an insight into a vital commodity which we know nothing of. Any layman will benefit from the knowledge that you have shared. What I especially appreciate are the small tips that you have shared for the consumers benefit. Thank you !

    • profile image

      Geeta K 

      11 months ago

      Thank you for this wonderful article. An insight into aspects of Petroleum Refining and by products in a crisp and condensed manner.

    • shreekrishna sharma profile imageAUTHOR

      SHREEKRISHNA SHARMA HALEMANE 

      11 months ago from MANGALORE

      Thank you Sneha

    • Sneha Bhat profile image

      Sneha Bhat 

      11 months ago from India

      Thank you Sir for this good article :)

    • shreekrishna sharma profile imageAUTHOR

      SHREEKRISHNA SHARMA HALEMANE 

      11 months ago from MANGALORE

      Thank you

    • profile image

      Srikrishna P 

      11 months ago

      Very good article...

    • profile image

      Prashanth Nayak 

      11 months ago

      Very nice Sir..

    • shreekrishna sharma profile imageAUTHOR

      SHREEKRISHNA SHARMA HALEMANE 

      11 months ago from MANGALORE

      @ Shashank, We are comparing the reading on the dispenser and the measuring can. Both will be at the same temperature.

    • profile image

      Shashank 

      11 months ago

      Good to know the quality aspects. Looking at this I feel mineral waters are sold at very high price compared to petrol. One question is that how valid the 5ltr measuring can test in outlets, if volume changes based on ambient temperature?

    • profile image

      Venkatakrishna 

      11 months ago

      Very nice article

    • jnanesh profile image

      Jnanesh Sharma H 

      11 months ago from South India

      Thank you, Mr Gopalakrishna Bhat, for commenting on my article

    • profile image

      Gopalakrishna Bhat S K 

      11 months ago

      Very good ,useful information.

    • profile image

      K. Sathyanarayana 

      11 months ago

      Explained useful things very simply. Understandable to every one.

    • profile image

      Krishnaprakasha 

      11 months ago

      This is an informative article. For a layman, it is a valuable tip to fill the tank during cooler morning hours. In my knowledge, in Kerala SKO is not totally abandoned as PDS is distributing it in limited quantities.

    • profile image

      G. Manivannan 

      11 months ago

      Sir, Very happy and proud to see a nice article from my Senior.

    • profile image

      Vinay Serrao 

      11 months ago

      Very Good informative article Sharma Sir.

    • profile image

      Rashmi H 

      11 months ago

      Rightly said

    • profile image

      Gopal Bolumbu 

      11 months ago

      Very good article. Well informative. Let me know, whether Tar is an end product of this process ?

    • profile image

      Jayarama Bhat M 

      11 months ago

      Very nice article by Sri Srikrishna Sharma who is indeed well experienced in QC of fuels which we use daily. Very informative for all especially those having no knowledge in this field. Informationadded regarding tests when in doubt about adultaration which will be useful for many.Expecting many more such articles from you.-Jayarama Bhat M

    • profile image

      Ramakrishna Bhat A 

      11 months ago

      Nice informative Article. Thanks.

    • profile image

      Raviprakash 

      11 months ago

      Very informative. Well written using simple style.

    • profile image

      Ramya H 

      11 months ago

      Indeed a very informative article. We usually focus only on quality of our lifestyle, and miss details on the fuel quality impact on the vehicle we run. The awareness has been missing and as mentioned, we end up landing in service center's.

    • hmkrishna profile image

      Halemane Muralikrishna 

      11 months ago from South India

      Wonderful article Mr Shreekrishna Sharma, it was giving a lot of knowledge regarding petroleum products and its technical details. I really feel bad that how ignorant we are regarding the items we use daily. It is a valuable article for children and adults alike to enhance their knowledge. Most important of all your highlights on BS-VI quality standards in India added value for everyone who is reading on this.

    • jnanesh profile image

      Jnanesh Sharma H 

      11 months ago from South India

      Wow, Mr Sharma, nice article. You have nicely explained about the natural gases, refining and PCRA. You have written something new for me. I loved your explanation also. Well written.

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