Surfaces should be mechanically cleared of loose paint and deposits before blast cleaning so as to minimise the risks from large pieces of debris. 进行喷砂清洗之前，应当采用机械方法清除表面的松散油漆和沉积物，以便尽量减少大块碎片的危险。
Blast cleaning may be allowed on the outside of equipment containing flammable materials only if adequate precautions are taken to avoid overheating of the metal by the blast. 只有在采取了预防措施以避免喷砂引起的金属过热后，才允许在含有易燃物质的设备外部进行喷砂清洗。
