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New Delhi, Feb 19: India will switch to the world's cleanest petrol and diesel from April 1 as it leapfrogs straight to Euro-VI emission compliant fuels from Euro-IV grades now - a feat achieved in just three years and not seen in any of the large economies around the globe.

India will join the select league of nations using petrol and diesel containing just 10 parts per million of sulphur as it looks to cut vehicular emissions that are said to be one of the reasons for the choking pollution in major cities.

Sanjiv Singh, Chairman of Indian Oil Corp (IOC) - the firm that controls roughly half of the country's fuel market, said almost all refineries began producing ultra-low sulphur BS-VI (equivalent to Euro-VI grade) petrol and diesel by the end of 2019 and oil companies have now undertaken the tedious task of replacing every drop of fuel in the country with the new one.

"We are absolutely on track for supplying BS-VI fuel from April 1. Almost all refineries have begun supplying BS-VI fuel and the same has reached storage depots across the country," he said.

From storage depots, the fuel has started travelling to petrol pumps and in the next few weeks all of them will only have BS-VI grade petrol and diesel, he said. "We are 100 per cent confident that fuel that will flow from nozzles at all the petrol pumps in the country on April 1 will be BS-VI emission compliant fuel."

India adopted Euro-III equivalent (or Bharat Stage-III) fuel with a sulphur content of 350 ppm in 2010 and then took seven years to move to BS-IV that had a sulphur content of 50 ppm. From BS-IV to BS-VI it took just three years.

"It was a conscious decision to leapfrog to BS-VI as first upgrading to BS-V and then shifting to BS-VI would have prolonged the journey to 4 to 6 years. Besides, oil refineries, as well as automobile manufacturers, would have had to make investments twice - first to producing BS-V grade fuel and engines and then BS-VI ones," he said.

State-owned oil refineries spent about Rs 35,000 crore to upgrade plants that could produce ultra-low sulphur fuel. This investment is on top of Rs 60,000 crore they spent on refinery upgrades in the previous switchovers.

BS-VI has a sulphur content of just 10 ppm and emission standards are as good as CNG.

Originally, Delhi and its adjoining towns were to have BS-VI fuel supplies by April 2019 and the rest of the country was to get same supplies from April 2020.

But oil marketing companies switched over to supply of BS-VI grade fuels in the national capital territory of Delhi on April 1, 2018.

The supply of BS-VI fuels was further extended to four contiguous districts of Rajasthan and eight of Uttar Pradesh in the National Capital Region (NCR) on April 1, 2019, together with the city of Agra.

BS-VI grade fuels were made available in 7 districts of Haryana from October 1, 2019.

Singh said the new fuel will result in a reduction in NOx in BS-VI compliant vehicles by 25 per cent in petrol cars and by 70 per cent in diesel cars.

The switchover, he said, is a tedious task as every drop of old, higher-sulphur content fuel has to be flushed out in depots, pipelines and tanks before being replaced by BS-VI.

"We are confident of disruption-free switchover to BS-VI supplies across the country," he said. "What we will be supplying is the best quality available anywhere in the world. You don't have any better fuel that is supplied in any part of the world. Perhaps our BS-VI fuel will be better than equivalent fuel in some parts of the US and Europe."

India adopted a fuel upgradation programme in the early 1990s. Low lead gasoline (petrol) was introduced in 1994 in Delhi, Mumbai, Kolkata and Chennai. On February 1, 2000, unleaded gasoline was mandated nationwide.

Similarly, BS-2000 (Euro-I equivalent, BS-1) vehicle emission norms were introduced for new vehicles from April 2000. BS-II (Euro-II equivalent) emission norms for new cars were introduced in Delhi from 2000 and extended to the other metro cities in 2001.

Benzene limits have been reduced progressively from 5 per cent in 2000 to 1 per cent nationwide. Lead content in gasoline was removed in phases and only unleaded gasoline is being produced and sold from February 1, 2000.

The octane number of gasoline signifies the improved performance of the engine. Loss in octane number due to phasing out of lead was made up by installing new facilities in the refinery and changes in refinery operation. RON (Research Octane Number) of gasoline for BS-2000 spec was increased to 88. This has over time been increased to 91.

Singh said sulphur reduction will reduce Particulate Matter (PM) emissions even in the in-use older generation diesel vehicles.

Domestic flights resumed operations on a truncated schedule on Monday with the first aircraft departing from the Delhi Airport for Pune, more than two months after a nationwide lockdown was announced to combat COVID-19.

The first flight to take off was an IndiGo aircraft to Pune, flying passengers stranded in the national capital since the lockdown was announced on March 24.

Passengers were screened at the airport with electronic thermometers, and revised protocol for air travel that included santisation of luggage through ultra-violent scanners, and maintaining physical distancing.

Only asymptomatic passengers were allowed to enter the airport.

Passengers were also seen wearing face masks and face shields given to them at the embarkation point by the airline to minimise the chances of infection while onboard.

The first flight arrived at Delhi Airport from Ahmedabad – a SpiceJet aircraft – at around 8:00 am.

BJD Lok Sabha member Anubhav Mohanty was among those who took the Air Vistara flight to Bhubaneshwar that departed Delhi airport at 6:50 am.

The first flight to take off from Mumbai was an IndiGo aircraft that departed for Patna at 6:45 am, while passengers from Lucknow were the first to reach the financial capital on an IndiGo aircraft that touched down at 8:20 am.

The food & beverage and retail outlets, which were closed for the past 63 days, opened at Terminal 3 of Delhi’s Indira Gandhi International (IGI) Airport.

The flight services resumed after a day of long and hard negotiations between the Centre and the states on Sunday.

All states finally agreed to accept at least some flights but announced different quarantine and self-isolation rules for arriving passengers to address apprehension about infections being brought in from other cities.

The Centre had issued guidelines for all modes of domestic travel that advised all asymptomatic passengers to self-monitor their health parameters for 14 days on completion of the journey and report to health authorities if they displayed any symptoms for COVID-19.

However, the Centre had allowed state governments to prescribe their own health protocols for disembarking passengers which led to differential guidelines across the country.

New Delhi, Jul 14: India's COVID-19 tally has reached 9,36,181 as 29,429 new coronavirus cases were reported in the last 24 hours, informed the Union Ministry of Health and Family Welfare on Wednesday.

The death toll went up to 24,309, including 582 fatalities in the last 24 hours.

Out of the total cases, 3,19,840 are currently active and 5,92,032 are cured/discharged/migrated.

As per the Ministry, Maharashtra -- the worst-affected state from the infection -- has a total of 2,67,665 COVID-19 cases and 10,695 fatalities. While Tamil Nadu has a tally of 1,47,324 cases and 2,099 deaths due to COVID-19.

Delhi has reported a total of 1,15,346 cases and 3,446 deaths due to COVID-19.

As per the information provided by the Indian Council of Medical Research (ICMR) 3,20,161 samples have been tested for COVID-19 till July 14, of these 1,24,12,664 samples were tested on Tuesday.