Romania delays effort to divert Danube water to nuclear reactor as shutdown looms

Romania delayed plans to sink four rock-filled barges into the Danube until Friday citing unsafe conditions, as the race tightens to divert water from the drought-hit river to its only working nuclear reactor and buy a few more days of operation amid low electricity supplies.

Record low water levels on the Danube, used to cool reactor turbines, have already forced the shutdown of one reactor, and authorities have taken unprecedented measures to keep the country’s only other reactor running...