1. Dav siv nyob rau hauv kev tshawb nrhiav roj, refining, tshuaj, offshore roj platforms, Flammable thiab explosive atmospheres xws li roj tankers;
2. Muaj feem xyuam rau Cheeb Tsam 1 thiab Cheeb Tsam 2 ntawm ib puag ncig roj tawg;
3. Muaj feem xyuam rau IIA, IIB, IIC explosive gas ib puag ncig;
4. Muaj feem xyuam rau cov pab pawg kub yog T1 ~ T3;
5. Raws li lub tsev tsim khoom, lub tsev khaws khoom yuav raug siv los ua cua sov rau lub caij ntuj no lossis ua kom qhov kub thiab txias.