(ANSA) - BELGRADE, AUG 11 - Romania may shut down a second reactor at the Cernavodă nuclear power plant due to the Danube river's continued decline. The site may be shut down within the next 48 hours due to the gradual decline in the river's water level, making it increasingly difficult for the cooling pumps to operate safely, international media reported, citing local sources. The plant's first reactor had to be turned off at the end of July. (ANSA).