Ukuqhuma-Ubungqina beNqanaba loKuqhushumba-Ubungqina beCrane

Iimfuno ezahlukeneyo zokuhlelwa kobungqina bokudubula kweekhreyini zivela kwiindawo ezahlukeneyo ezinokutsha neziqhumayo.. Ezi mfuno ziwela kwiindidi ezintathu eziphambili:

Udidi lwemeko	Ukuhlelwa kwegesi	Iigesi ezimele	Ubuncinci beNtlantsi yokuLawula amandla
Ngaphantsi koMgodi	I	IMethane	0.280mJ
Iifektri eziNgaphandle koMgodi	IIA	Ipropane	0.180mJ
	IIB	Ethylene	0.060mJ
	IIC	Ihydrogen	0.019mJ

1. Iikhreyini zeKlasi yoku-I ezikhusela uqhushumbo, echongwe njenge Exd I;

2. Iikhreyini zeKlasi yesi-II yemizi-mveliso-ubungqina bokudubula, echongwe njenge Exd IIB T4 okanye Exd IIC T4;

3. Iikhreyini ezikwaziyo ukuqhuma uthuli, echongwe njenge DIP A21 TA T4;

Ngaphakathi kwiKlasi yesi-II, iikhreyini ezikwaziyo ukudubula zibekwe ngokwahlulwe njengezinto ezingatshiyo “d” kwaye ukhuselekile ngaphakathi “i” zihlelwe zibe IIA, IIB, kunye namanqanaba e-IIC. IiCranes ezinomlinganiselo we-IIB zifanelekile kwiindawo ze-IIA, ngelixa iikhreyini ezikalwe kwi-IIC zifanelekile kuzo zombini iindawo ze-IIA kunye ne-IIB.