IAEA floats atom fuel supply plan to ease bomb risk

* ElBaradei outlines IAEA-run nuclear fuel bank plan

* Industrialised, developing nations split over idea

* Developing states fear renouncing energy sovereignty

By Mark Heinrich

VIENNA, May 21 (Reuters) - The U.N. nuclear watchdog has floated a plan for an international uranium fuel supply bank to stem the spread of nuclear weapons know-how, but the idea faces resistance among developing nations.

The International Atomic Energy Agency and industrialised nations see multilateral uranium-enrichment centres as the key to slaking rising demand for nuclear energy without developing nations building proliferation-prone plants on their own soil.

An IAEA-supervised fuel repository would provide enriched uranium from industrialised nations' stocks if recipients meet qualifications like an impeccable non-proliferation record.

U.S. President Barack Obama gave the concept a key lift in an April speech on his vision of nuclear disarmament when he said a fuel bank would give any country the benefits of peaceful nuclear power if they renounced nuclear weapons.