An official with the General Administration of Quality Supervision, Inspection and Quarantine said the authorities would inspect and test each item to find and solve any hidden problems and make emergency plans.

The items include boilers, pressure containers and pipelines, elevators, cranes, passenger ropeways and other large pieces of equipment and machinery to be used in or near the game venues.

He said inspectors would keep close watch over all these items before and during the games.

The inspection process was going smoothly in the Olympic venues in Shanghai, Tianjin, Shenyang, Qingdao and Qinhuangdao. Local quality inspection authorities had organized emergency and rescue drills at venues in Beijing, Tianjin and Hebei Province.

With the approach of the long-awaited event, Chinese authorities have geared up to intensify security preparations.

Passengers riding the Beijing subway and major bus routes will undergo strict security checks starting at the end of June ahead of the Olympics, Beijing police said earlier this month.

"Security is a top priority of the Beijing Olympics. It guarantees a successful Olympic Games and has a great deal to do with social stability and the national image," said Zhou Yongkang,a member of the Standing Committee of the Communist Party of China Central Committee Political Bureau on Sunday.

Zhou also urged intensified anti-terrorist efforts before and during the Games.

Beijing now has a 150,000-strong security guard contingent plus 290,000 volunteers doing patrols.

During the event, security guards who are directly assigned to the Games would number at least 80,000, according to Ma Zhenchuan, director of the Olympic security command.