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Tenders Are Invited For The Object Of This Contract Is The Implementation Of A System To Monitor The Evolution Of The Structural Resistance Of The Pipe Of The Ptll - Cota 250 Artery, In Real Time, By Means Of The Optical Fiber Acoustic Monitoring System (In Forward Afo).The Works Basically Consist Of:-Study Of Implementation Of The Afo System With Field Visits.-Installation Of The Optical Fiber Of 8 Fibers Inside The Pipe Through The Man Mouths, Boxes Or Key Chambers.-Installation Of Auxiliary Elements To Fix The Fo And Connection Boxes, As Well As Tubes In The Elbows To Protect The Fiber From Possible Breaks Or Strips.-Installation Of The Software Unit That Will Capture And Will Analyze The Acoustic Signals Of The Afo System.-Tests In Service After Each Phase Of Installation And Once All Parts Have Been Completed.