Iran said on Sunday it would definitely resume some sensitive nuclear fuel activities on Monday after the European Union failed to meet Tehran’s deadline to submit proposals to break a diplomatic impasse.
‘‘As we did not receive the EU proposal, naturally we will definitely resume work at the Isfahan plant tomorrow,’’ a senior Iranian nuclear official said on condition of anonymity.
The Islamic Republic issued a Sunday deadline for the EU to submit its plans for the economic and political incentives it would provide in return for Iran’s indefinite suspension of uranium enrichment, nuclear fuel reprocessing and related activities.
But the British Foreign Office said the EU, represented by Britain, France and Germany, had informed Iran that ‘‘full and detailed proposals’’ would be delivered in a week.
The conversion plant near the central city of Isfahan takes processed uranium ore, mined in Iran’s central desert, and turns it into uranium hexafluoride gas. This gas can be pumped into centrifuges that spin at supersonic speed to enrich uranium.
Enriched uranium is used in nuclear power plants, but if highly enriched, can be used in atomic weaponry.
The EU and the United States suspect Iran is trying to build a nuclear arsenal and say that if Iran restarts uranium conversion or enrichment, they will ask the UN Security Council to impose sanctions on the Islamic republic.
Tehran insists its programme is peaceful and that it only wants nuclear power to generate electricity.