4.7 Working Schedule,Annual Working Time and Operating Rate

4.7.1 A continuous working schedule shall be used for the medium slab rolling plant.

4.7.2 The annual effective working time of the medium slab rolling mill shall not be less than 6,500h/a.

4.7.3 The annual effective working time of the steel plate heat treatment line shall not be less than 7,000h/a.

4.7.4 The load factor of the medium slab rolling mill shall not be lower than 85%.