Perform The Replacement Of The Inverse Osmosis Membranes Of Ten Frames Of The Osmosis Process Of The Itam Of The Llobregat. It Also Includes The Supply And Replacement Of Fungible Materials And Auxiliary Pieces Of The Racks That Are The Subject Of The Contract, Which Is Necessary To Renew Due To Their Poor Conservation And To Take Advantage Of The Scheduled Stop Of This Facility. In Short, The Work To Be Performed Are: Assembly Of The Membranes Provided By Atl. Supply And Assembly Of The Fungible Material And/Or Auxiliary Elements. Rental Of Auxiliary Media. Supply Of Water, Light, Etc. If Necessary. Partial Tests And Operation Of The Racks.