<prompt> Translate the following text to SwahiliIn general, the amount of structural steel for a typical FGD retrofit system is equal to or less than the steel requirements for a SCR retrofit of the same size.  <response>: Kwa ujumla, kiasi cha chuma cha muundo kwa mfumo wa kawaida wa FGD ni sawa au chini ya mahitaji ya chuma kwa ajili ya SCR ya ukubwa huo. 