Surfaces should be mechanically cleared of loose paint and deposits before blast cleaning so as to minimise the risks from large pieces of debris. 進(jìn)行噴砂清洗之前，應當采用機械方法清除表面的松散油漆和沉積物，以便盡量減少大塊碎片的危險。
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. 只有在采取了預防措施以避免噴砂引起的金屬過(guò)熱后，才允許在含有易燃物質(zhì)的設備外部進(jìn)行噴砂清洗。
