On 12 August 2015, the 186,368-core Tianhe-1, felt the impact of the powerful Tianjin explosions and went offline for some time. Xinhua reports that "the office building of Chinese supercomputer Tianhe-1, one of the world's fastest supercomputers, suffered damage". Sources at Tianhe-1 told Xinhua the computer is not damaged, but they have shut down some of its operations as a precaution. Operation resumed on 17 August 2015.