Mayeso oletsa a Dolomite - EN149

Dolomite blocking testndi mayeso osankha mu Euro EN 149:2001+A1:2009.

Chigobacho chimawonekera ku fumbi la dolomite ndi kukula kwa 0.7 ~ 12μm ndipo ndende ya fumbi imafika ku 400±100mg/m3. Ndiye fumbi umasefedwa kudzera chigoba pa yoyerekeza kupuma mlingo wa malita 2 pa nthawi. Kuyesedwa kumapitilizidwa mpaka kudzikundikira kwa fumbi pa nthawi ya unit kufika 833mg · h/m3 kapena kukana pachimake kufika pamtengo womwe watchulidwa.

Thekusefera ndi kukana kupuma kwa chigobakenako anayesedwa.

Masks onse omwe amayesa kuyesa kutsekereza kwa dolomite amatha kutsimikizira kuti kukana kupuma kwa masks pakugwiritsa ntchito kwenikweni kumakwera pang'onopang'ono chifukwa cha kutsekeka kwa fumbi, motero kupatsa ogwiritsa ntchito kumva bwino kwambiri komanso nthawi yayitali yogwiritsira ntchito mankhwala.