Supporto alla Sostenibilità del business di Prysmian Cavi & Sistemi.

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  • Contesto. I cavi energia di Media Tensione, MT, sono oggi costituiti principalmente da materiali isolanti reticolati, in Polietilene, XLPE, o in gomma, EPR; la reticolazione dei materiali isolanti ne rende difficile la riciclabilità a fine vita. Prysmian ha sviluppato un nuovo tipo di cavi energia per Media Tensione, costituiti da materiali termoplastici, non reticolati, ipoteticamente più semplici da riciclare a fine vita.
  • Obiettivi. Prysmian ha affidato a R&D innovAction l’incarico di valutare:
    1. l’effettiva riciclabilità di questi nuovi cavi MT, costituiti da materiali completamente termoplastici,
    2. la stima della riduzione dell’impatto ambientale in termini di minori emissioni di CO2, ovvero del miglioramento della Carbon Foot Print di prodotto.
  • Attività e Risultati. Dopo una prima fase di caratterizzazione dei materiali in laboratorio, è stata individuata una società che opera nell’ambito del riciclo di cavi dove è stato effettuato un test pilota di recupero dei materiali non metallici da uno spezzone di cavo full size.

Con questi materiali opportunamente rigenerati, sono stati prodotti manufatti in plastica di diverse dimensioni:
A. pallets in plastica, un prodotto in forte espansione per la maggior durata e la completa riciclabilità a fine vita, rispetto ai pallet in legno, più difficili da smaltire; sia la processabilità che le caratteristiche prestazionali di questi pallet sono perfettamente conformi allo standard qualitativo di riferimento;

B. Piccoli componenti in plastica (rondelle, bulloni, ecc.)

In questo modo è stata dimostrata la completa riciclabilità a livello industriale dei nuovi cavi MT energia termoplastici di Prysmian, sia del prodotto al momento del suo smaltimento a fine vita che degli eventuali scarti industriali derivanti dalla sua fabbricazione. Questo comporta un miglioramento dell’impatto ambientale di questi nuovi cavi rispetto a quelli convenzionali in XLPE in quanto consente il totale recupero di materia, senza dover ricorrere alla discarica (“Zero Landfill”) e a supporto della Sostenibilità del Business come indicato nelle direttive della Green Public Procurement della Comunità Europea.

La valutazione del ciclo di vita, Life Cycle Assesment, LCA, di questo nuovo tipo di cavi evidenzia un impatto ambientale decisamente ridotto rispetto ai cavi convenzionali in XLPE grazie a: > l’utilizzo di materiali a ridotta emissione di CO2 per la loro produzione, > una notevole riduzione dei consumi energetici durante le varie fasi produttive del cavo, > la completa riciclabilità, questi fatti contribuiscono notevolmente alla riduzione complessiva delle emissioni di CO2 equivalenti, con un notevole miglioramento della Carbon Foot Print di questi nuovi cavi rispetto a quelli convenzionali.