NO ARAK "ADVANCES"

The IAEA report also listed other measures Iran had agreed to take under the six-month accord with the six world powers - the United States, France, Britain, Germany, China and Russia.

Those included an undertaking that Iran would not build any more enrichment sites during this time, a step meant to buy time for negotiations on a final settlement of Tehran's decade-old nuclear stand-off with the powers.

Enriched uranium can have both military and civilian purposes. Iran denies Western allegations that it has been seeking to develop the capability to make nuclear bombs, saying it wants only to generate electricity from enrichment.

The IAEA report also said Iran was, as of January 20, not "conducting any further advances" to its activities at the Arak heavy water research reactor, a plant under construction that could yield plutonium as an alternative fuel for atomic bombs once it is operational. Iran denies any such goal.

In a January 18 letter to the Vienna-based IAEA, Iran had enclosed information on centrifuge assembly workshops, storage facilities and centrifuge rotor production workshops, the report added.

"The Agency and Iran have also agreed on arrangements for increased access by agency inspectors to the nuclear facilities at Natanz and Fordow, including in relation to weekends and holidays in Iran," the IAEA said.