Delhi: DRDO Installs Two Oxygen Plants Which Can Generate 1,000 Litres Of Oxygen Per Minute One of the oxygen plants. In a major boost to the National Capital of Delhiâs fight against the coronavirus pandemic, the Defence Research and Development Organisation (DRDO) has installed two oxygen plants in the capital with each of them generating around 1,000 litres of the life-saving gas per minute. The oxygen plants have been installed at AIIMS and Safdarjung Hospital in New Delhi, reports India Today. The life-saving oxygen gas has been the most sought-after commodity in Delhi, with rising Covid-19 cases in the city. In the view of the deteriorating situation, the Delhi government has also requested the Centre to deploy the Indian Army to handle the crisis.