Reuters: China will face safety issues and environmental hazards involving nuclear waste disposal if the nuclear power sector is expanded too fast, the country’s nuclear safety chief said on Monday. China, the world’s second-largest user of fuel and electricity after the United States, plans to quadruple its nuclear power capacity in the next decade to about 40 gigawatts, fast-tracking from an embryonic stage in the last three decades when a total of less than 10 GW was built. “At the …