Japan Thursday shut down its second nuclear power plant in six weeks.

The shutdown poses another setback for Japan's nuclear power industry, which provides more than one-fourth of the electricity in this energy-poor country and was slated to expand.The Ministry of International Trade and Industry said it decided to close the No. 2 Takahama Nuclear Power Plant in western Japan after inspectors found that about 10 anti-vibration fittings were missing or improperly installed.