Nws yog tsuas yog siv rau kev tshawb pom ntawm cathodic tiv thaiv tsis. Nws yog ib qho khoom siv tseem ceeb hauv kev tswj kav kav dej thiab kev saib xyuas. Nws yog teem raws kab raws li qhov kev xeem muaj nuj nqi. Cov pawg xeem tuaj yeem siv los ntsuas qhov muaj peev xwm, tam sim no, thiab kev ua haujlwm rwb thaiv tsev ntawm cov raj xa dej, nrog rau kev kuaj pom cov dej ntws tawm ntawm cov txheej npog thiab kev sim ntawm AC thiab DC cuam tshuam. Cov pawg xeem yog ib qho khoom siv tshwj xeeb uas siv rau kev tiv thaiv cathodic ntawm cov kav dej uas muaj peev xwm soj ntsuam kev soj ntsuam los ntsuas kev tiv thaiv cov kav dej.
Cathodic tiv thaiv kev xeem pawg yuav tsum tau teeb tsa los txiav txim siab txoj hauj lwm, tam sim no thiab tsis kam ntawm cov qauv. Vim li no, tsis muaj lwm yam kev ntsuas zoo dua. Rau cov kav dej muaj peev xwm kuaj pawg, 1 txog 2km yog txaus. Feem ntau, ib lub raj xa dej ntsuas tam sim no yog xav tau rau txhua 5 ntsuas pawg. Nyob rau hauv cov cheeb tsam uas ua tau zoo nyob rau hauv cov nroog thiab cov nroog, qhov kev ncua deb ntawm cov peev txheej ntsuas yog li ntawm ib nrab ib mais. Ntawm qhov tsis sib xws, nws yog qhov yuav tsum tau teeb tsa hauv av hluav taws xob rwb thaiv tsev ntsuas pawg ntawm cov khoom siv hluav taws xob faus. Ntawm qhov kev sib tshuam nrog DC traction system, ntsuas pawg yuav tsum tau teeb tsa. Yog tias tsim nyog (xws li nyob rau ntawm qhov chaw siab-ohm taag), qhov ntsuas qhov ntsuas tau ruaj khov rau kev ntsuas lub peev xwm ntawm cov qauv yuav tsum tau teeb tsa.