Industrial Engineering Services S.r.l. has recently assisted AVA HUEP ( www.ava-huep.com/en/) in completing the plant layout providing structural analysis and detailed drawings of frames that support two big continuous mixers installed in ENEL Grazia Deledda Power Plant Sardinia. The design and structural calculation has been made using Inventor ad Robot softwares. The plant provides the conditioning of fly ashes coming from fluidized bed unit 2.