China will remain unaffected by radioactivity released from Japan's quake-hit nuclear power plant over the next three days, according to China's National Nuclear Emergency Coordination Committee Friday.

The committee said in a statement that radioactive materials from the crippled Fukushima Daiichi Nuclear Power Plant would disperse to Pacific waters east and south of the nuclear power plant in the coming three days and would not impact China.

The statement was made on the basis of the latest weather analysis as of 4 p.m. on Friday, conducted by a Beijing-based emergency response center affiliated with the World Meteorological Organization and the International Atomic Energy Agency.

Furthermore, the State Oceanic Administration detected no abnormal radiation in waters off the Chinese coast and concluded that China's waters will not be affected by radioactive leakage in the next three days as the currents off the coast of Fukushima slowly flow east.

Meanwhile, the Ministry of Environmental Protection said that air monitoring across the country continues to show normal radiation levels, according to the statement.

The accident has not yet had any impact on China's environment or the Chinese public's health, the statement said. [ As of Thursday, no radioactive contamination had been detected on 31 Chinese nationals who have returned from Japan since March 11, sources with the Beijing Centers for Diseases Control and Prevention (CDC) told Xinhua Friday.

According to CDC vice director Lou Yun, radiation screening doors were set up at the Beijing International Airport to check every Chinese passenger arriving from Japan.

Lou advised passengers from Japan to immediately bathe as well as change and wash their clothes.

No radioactive materials were found in Beijing that might have floated from Japan, Lou added.

Meanwhile, China's top quality watchdog said that alarmingly high levels of radiation had been detected on two Japanese nationals upon their arrival in east China's Wuxi City from Tokyo on Wednesday.

According to the General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ), one of the two Japanese nationals came from Nagano Prefecture, about 350 km from the Fukushima Prefecture, and the other from Saitama Prefecture, about 200 km from Fukushima, where the radiation-leaking Daiichi nuclear power plant is located.

The AQSIQ said the case was reported to the local environmental and health departments.

The Fukushima Daiichi Nuclear Power Plant in Japan was crippled by a 9.0-magnitude earthquake and ensuing tsunami on March 11.