Isizathu esithe ngqo sokunyuka kobushushu be-PCB kungenxa yobukho bezixhobo zokuchitha amandla esekethe, izixhobo zombane zinemigangatho eyahlukeneyo yokuchitha amandla, kwaye ubushushu bobushushu buhluka ngokuchithwa kwamandla.

Iziganeko ezi-2 zokunyuka kobushushu kwi-PCB:

(1) ukunyuka kwamaqondo obushushu okanye ukunyuka kwamaqondo obushushu kwindawo enkulu;

(2) ukunyuka kwexesha elifutshane okanye ixesha elide lobushushu.

Kuhlalutyo lwamandla e-PCB ashushu, le miba ilandelayo ihlahlelwa ngokubanzi:

1. Ukusetyenziswa kwamandla ombane

(1) ukuhlalutya ukusetyenziswa kwamandla ngokweyunithi yendawo nganye;

(2) ukuhlalutya ukuhanjiswa kwamandla kwi-PCB.

2. Ubume bePCB

(1) ubungakanani bePCB;

(2) izixhobo.

3. Ukufakwa kwePCB

(1) indlela yokufakela (njengofakelo oluthe nkqo kunye nofakelo oluthe tye);

(2) imeko yokutywina kunye nomgama ukusuka kwindlu.

4. Imitha yokushisa

(1) i-radiation coefficient yomgangatho we-PCB;

(2) umahluko weqondo lobushushu phakathi kwePCB kunye nomgangatho osecaleni kunye nobushushu bazo obupheleleyo;

5. Ukuqhuba kobushushu

(1) fakela irediyetha;

(2) ukuqhuba ezinye izakhiwo zokufakela.

6. I-Thermal convection

(1) ukuhanjiswa kwendalo;

(2) ukupholisa ngenkani.

Uhlalutyo lwe-PCB lwale miba ingasentla yindlela esebenzayo yokusombulula ukunyuka kobushushu be-PCB, rhoqo kwimveliso kunye nenkqubo le miba inxulumene kwaye ixhomekeke, izinto ezininzi kufuneka zihlalutywe ngokweyona meko, kuphela kwimeko yokwenyani kunokuba ngaphezulu. ibalwe ngokuchanekileyo okanye ukunyuka kobushushu obuqikelelwayo kunye neeparamitha zamandla.