Tuʻunga ʻo e tohi fakamoʻoni ʻo e fakaʻauha au

ʻOku ʻi ai ha ngaahi fie maʻu kehekehe ki he fakafaʻahinga ʻo e cranes ʻoku tupu mei he ngaahi ʻatakai kehekehe ʻoku velangofua mo fakafepaki. ʻOku kau e ngaahi fie maʻu ko ʻení ki ha faʻahinga lalahi ʻe tolu:

Faʻahinga Tuʻú	Fakafaʻahinga ʻo e kasa	Ngaahi kasa fakafofonga	Siʻisiʻi taha Ignition fakatupu ivi
ʻI he malumalu ʻo ʻeku	I	Methane	0.280mJ
Ngaahi meʻa ʻi tuʻa ʻi he ʻaʻaku	IIA	Kasa	0.180mJ
	IIB	Ethylene	0.060mJ
	IIC	Fakapaaki ʻo e	0.019mJ

1. Kalasi ʻoku ou fakamoʻoniʻi cranes, vahe ko Exd I;

2. Kalasi II-fakamoʻoni cranes, vahe ko Exd IIB T4 pe Exd IIC T4;

3. Fakamoʻoniʻi ʻo e efu cranes, vahe ko e DIP A21 ta T4;

ʻI he kalasi II, cranes e fakamoʻoni ʻo e fakaʻauha ko e flameproof “d” mo e intrinsically malu “i” ʻOku fakafaʻahinga ki IIA, IIB, mo e tuʻunga IIC. ʻOku feʻunga ʻa e Cranes mo ha faʻahinga IIB ki he ngaahi ʻatakai IIA, ka cranes ʻoku feʻunga ʻa e IIC ki he ngaahi ʻatakai IIA mo IIB fakatouʻosi.