<prompt> Translate the following text to EnglishSehemu ya kwanza ya makala hii inazungumzia juu ya mahitaji ya vifaa vya kawaida au kawaida constrained mvua FGD, hasa LSFO, vifaa vya retrofit.  <response>: The chapter focuses on the resources needed for typical or normally constrained wet FGD, specifically LSFO, retrofit installations. 