<prompt> Translate the following text to SwahiliBy comparison, the conservative estimate of the amount of steel required for a full FGD system is less than or equal to that required for an SCR retrofit.  <response>: Kwa kulinganisha, makadirio ya kihafidhina ya kiasi cha chuma kinachohitajika kwa mfumo kamili wa FGD ni chini ya au sawa na kile kinachohitajika kwa upgrading ya SCR. 