For the purposes of this Chapter, the following definitions apply:
‘Union industry’ means the Union producers as a whole of the like or directly competitive products operating within the territory of the Union, or those Union producers whose collective output of the like or directly competitive product constitutes a major proportion of the total Union production of those products;
‘serious injury’ means a significant overall impairment in the position of the Union industry;
‘threat of serious injury’ means serious injury that is clearly imminent;
‘disturbances’ means disorders in a sector or industry;
‘threat of disturbances’ means disturbances that are clearly imminent.