Sababta tooska ah ee heerkulka PCB kor u kaca waxaa sabab u ah aaladaha korantada ee korantada, aaladaha elektiroonigga ah waxay leeyihiin heerar kala duwan oo ah ku-tuurista awoodda, iyo xoojinta kuleylka ayaa ku kala duwan korantada.

2 Ifaf ahaan heerkulka kor u kaca PCB:

(1) Kordhinta heerkulka maxalliga ah ama heerkulka aagga weyn;

(2) heerkulka muddada-gaaban ama muddada-dheer.

Falanqaynta awoodda kuleylka ee PCB, dhinacyada soo socda guud ahaan waa la falanqeeyaa:

1. Isticmaalka korantada korantada

(1) Falanqeeyaan koronta korantada halkii aag halbeega;

(2) Falanqee korantada ku-qaybin PCB.

2. Qaab dhismeedka PCB

(1) Cabbirka PCB;

(2) Qalabka.

3. Rakibaadda PCB

(1) Qaabka rakibaadda (sida rakibaadda toosan iyo rakibidda toosan);

(2) Xaaladda xijaab iyo masaafada guryaha.

4. Shucaaca kuleylka kuleylka

(1) Shucaaca shucaaca ee dusha sare ee PCB;

(2) Farqiga heerkulka u dhexeeya PCB iyo dusha ku xigta iyo heerkulka ay dhameystiraan;

5. Qulqulka kuleylka

(1) Ku rakib hiitarka;

(2) falay qaab dhismeedka kale ee rakibaadda.

6. Qanacsaadka kuleylka

(1) Khasnad dabiici ah;

(2) Khasnadda qaboojinta qasabka ah.

Falanqaynta PCB ee qodobbada kor ku xusan waa hab wax ku ool ah oo lagu xalliyo heerkulka PCB kor u kaca, inta badan qodobbadaas waa in lagu eedeeyaa xaalada dhabta ah, kaliya xaalad gaar ah ayaa si sax ah loo xisaabin karaa ama lagu qiyaasi karaa heerka heerkulka si sax ah loo xisaabiyo iyo xaashiyaha korantada.