MILAN, Sept 5 (Reuters) - Italy is not directly impacted by the halt of Russian gas flows coming through the Nord Stream 1 pipeline, the Chief Executive of Italy's gas grid operator Snam said on Monday.

The impact of Nord Stream's halt is "very indirect, since almost all Russian supplies to Italy arrive via the pipeline that crosses Ukraine", Stefano Venier told Italy's Rai News 24 on the sidelines of an international gas conference in Milan.

On Friday evening, Russia's Gazprom scrapped a Saturday deadline to resume gas supply down its main Nord Stream 1 to Europe and did not give a new timeframe for re-opening, stoking fears about shortages and gas rationing in the European Union this winter.

Venier said that Italy only needed to add 1.2 billion cubic metres of gas to reach its 90% target on storage ahead of this winter.

"If we manage to fill up (gas storage) a bit more it will certainly be an additional contribution, not only to security for the winter but also to have more flexibility in responding to the volatility of supply from Russia," Venier said at the Gastech conference.

Snam expected to get the greenlight from the government and local authorities to start work to moor a new floating LNG terminal in Piombino, Tuscany, by the end of October, he said.

The setting up of new regasification terminals is part of Italy's efforts to reduce the country's dependence on Russian gas. State-controlled Snam plans to have the Piombino terminal ready by spring next year. (Reporting by Elvira Pollina and Francesca Landini, additional reporting by Marwa Rashad; writing by Francesca Landini, editing by Federico Maccioni and Emelia Sithole-Matarise)