1. Department of Industrial Engineering, University of Florence, Via di Santa Marta 3, Firenze 50139, Italye-mail: bianchini@vega.de.unifi.it
2. GE Oil & Gas, Via Felice Matteucci 10, Firenze 50127, Italye-mail: francesco.cangioli@ge.com
3. Department of Industrial Engineering, University of Florence, Via di Santa Marta 3, Firenze 50139, Italye-mail: susanna.papini@unifi.it
4. Department of Industrial Engineering, University of Florence, Via di Santa Marta 3, Firenze 50139, Italye-mail: andrea.rindi@unifi.it
5. Department of Industrial Engineering, University of Florence, Via di Santa Marta 3, Firenze 50139, Italye-mail: ennio.carnevale@unifi.it
6. CNR-ICCOM, National Research Council of Italy, Via Madonna del Piano 10, Sesto Fiorentino 50019, Italye-mail: lorenzo.ferrari@iccom.cnr.it