<prompt> Translate the following text to EnglishKwa ujumla, mahitaji ya crane kwa ajili ya retrofits teknolojia FGD ni eneo maalum, ingawa mahitaji haya ni kwa ujumla chini ya mahitaji ya retrofits SCR.  <response>: Crane requirements for FGD technology retrofits are generally site specific, although these requirements are generally less demanding than requirements for SCR retrofits. 