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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.

New Delhi, Feb 22: China is delaying grant of clearance to India's proposal to send an Indian Air Force flight to carry relief material for people affected by coronavirus in the neighbouring country and bring back Indians from its city of Wuhan, official sources said Saturday.

India was to send a C-17 military transport aircraft to Wuhan, the epicentre of the coronavirus outbreak, on February 20 but the plane could not take off as permission was not granted for the flight.

"China is deliberately delaying grant of clearance for the evacuation flight," a high-level source said.

The aircraft was to carry a large consignment of medical supplies to China and bring back more Indians from Wuhan.

Sources said the Chinese side continued to maintain that there was no delay in granting permission for the flight to go, but "inexplicably" the clearance has not been given.

In a letter to President Xi Jinping earlier this month, Prime Minister Narendra Modi conveyed India's solidarity to the people and government of China in meeting the challenge of the coronavirus outbreak and offered to provide assistance to the country.

India then put together relief supplies in pursuance of Modi's commitment as a token of India's solidarity, particularly in the 70th year of the anniversary of diplomatic relations between the two countries.

"These supplies have been offered even as India faces tremendous shortage itself, given our ethos of helping others in their hour of need," said a source aware of the issue.

The items being supplied are gloves, surgical masks, feeding pumps and defibrillators based on the requirements as indicated by the Chinese side.

India's national carrier Air India has already evacuated around 640 Indians from Wuhan in two separate flights.

According to estimates, over 100 Indians are still living in Wuhan. A sizeable number of countries have evacuated their citizens from China and restricted movement of people and goods to and from the country in view of the massive outbreak of coronavirus there.

Indian nationals in Wuhan continue their long wait for the flight. The delay is causing them and their family members in India tremendous mental anguish, said the sources.

They said relief and evacuation flights from other countries including by France are allowed to operate by China but the permission has not come through in India's case.

"Are they not interested in Indian aid provided as our token of support? Why are they creating roadblock in evacuating our nationals from Wuhan and putting them under hardship and mental agony?" said a person aware of the issue.

New Delhi, Jun 15: A total of 1,15,519 samples of COVID-19 have been tested in the last 24 hours taking the total samples tested to 57,74,133 in the country, the Indian Council of Medical Research (ICMR) said.

"Total sample tested 57,74,133 and samples tested in the last 24 hours is 1,15,519," said ICMR.

With an increase of 11,502 cases in the past 24 hours, the COVID-19 count in India reached 3,32,424 on Monday, according to the Union Health and Family Welfare Ministry.

The COVID-19 count includes 1,53,106 active cases while 1,69,798 patients have been cured and discharged or migrated so far, and the toll due to COVID-19 has now reached 9,520.