1.Widely siv nyob rau hauv kev tshawb nrhiav roj av, roj refining, tshuaj lom neeg, tub rog thiab lwm qhov chaw txaus ntshai thiab offshore roj platforms, roj tankers thiab lwm qhov chaw rau kev teeb pom kev zoo thiab teeb pom kev zoo;
2. 2 rau cov pa cua tawg;
3. Muaj feem xyuam rau IIA, IIB, II C explosive gas atmospheres;
4. Haum rau combustible plua plav ib puag ncig 21, 22;
5. Muaj feem xyuam rau cov kev tiv thaiv ntawm siab, av noo, muaj corrosive gases nyob rau hauv qhov chaw;
6. Teeb pom kev zoo rau kev txuag hluav taws xob thiab kev saib xyuas
ntawm qhov chaw nyuaj hloov.