為了在(zai)(zai)(zai)操作(zuo)中盡量(liang)削減(jian)人(ren)活動發生(sheng)的污染(ran)，人(ren)員在(zai)(zai)(zai)進(jin)入(ru)無(wu)(wu)(wu)(wu)塵(chen)區(qu)(qu)之(zhi)前，有必要(yao)替換無(wu)(wu)(wu)(wu)塵(chen)服并(bing)洗手(shou)、消(xiao)毒(du)、過(guo)風淋。這些措施(shi)即;人(ren)員凈(jing)(jing)(jing)化。人(ren)員凈(jing)(jing)(jing)化用房(fang)中替換無(wu)(wu)(wu)(wu)塵(chen)服的房(fang)間(jian)應予送(song)風，并(bing)對(dui)進(jin)口(kou)側等其他房(fang)間(jian)堅(jian)持(chi)(chi)正壓(ya)(ya)(ya)，對(dui)廁所、淋浴(yu)堅(jian)持(chi)(chi)少(shao)量(liang)正壓(ya)(ya)(ya)，而廁所、淋浴(yu)應堅(jian)持(chi)(chi)負(fu)壓(ya)(ya)(ya)。各(ge)種物(wu)(wu)件在(zai)(zai)(zai)送(song)入(ru)無(wu)(wu)(wu)(wu)塵(chen)區(qu)(qu)前有必要(yao)通(tong)過(guo)凈(jing)(jing)(jing)化處(chu)理，簡稱;物(wu)(wu)凈(jing)(jing)(jing)。物(wu)(wu)料凈(jing)(jing)(jing)化道路與人(ren)凈(jing)(jing)(jing)道路應分(fen)(fen)隔，如果(guo)物(wu)(wu)料與人(ren)員只能(neng)在(zai)(zai)(zai)同一處(chu)進(jin)入(ru)無(wu)(wu)(wu)(wu)塵(chen)車間(jian)，也(ye)有必要(yao)分(fen)(fen)門(men)而入(ru)，物(wu)(wu)料先(xian)通(tong)過(guo)粗凈(jing)(jing)(jing)化處(chu)理。在(zai)(zai)(zai)體系(xi)規劃(hua)上，物(wu)(wu)凈(jing)(jing)(jing)用房(fang)的粗凈(jing)(jing)(jing)化和精(jing)凈(jing)(jing)(jing)化階段由于會吹落很多生(sheng)微粒，所以相對(dui)無(wu)(wu)(wu)(wu)塵(chen)區(qu)(qu)應堅(jian)持(chi)(chi)負(fu)壓(ya)(ya)(ya)或(huo)零壓(ya)(ya)(ya)，如果(guo)污染(ran)危(wei)險性大(da)則對(dui)進(jin)口(kou)方向也(ye)要(yao)堅(jian)持(chi)(chi)負(fu)壓(ya)(ya)(ya)。