Green hydrogen production is one of solution to mitigate climate change. Despite its potential, the technologies employed are not completely known and their maintenance strategies require further investigation. This thesis addresses these challenges for an alkaline electrolyzer type, proposing a comprehensive framework for condition monitoring and maintenance plan optimization. The establishment of key performance indicators, KPIs, related to the degradation and operational efficiency will serve as the foundation of a condition monitoring system directly related to real-time data detection in the system. In addition, the thesis explores advanced monitoring technologies, able to detect sign of early degradation in equipment. Furthermore, the work includes a Failure Mode Effects Analysis (FMEA) of alkaline electrolyzer and its Balance of Plant (BoP), by identifying potential failure modes and their effects, evaluating their impacts, frequency and detectability, and prioritizing them by Risk Priority Numbers (RPNs evaluation). By focusing on critical components and processes, the FMEA highlights pieces of equipment and areas where maintenance efforts should be concentrated to prevent failures and extent the lifespan of the system. In conclusion, this thesis provides a high level framework to enhance the maintenance and reliability of alkaline electrolyzers in green hydrogen production.
La produzione di idrogeno verde è una delle scelte per mitigare il cambiamento climatico. Nonostante il suo potenziale, le tecnologie impiegate non sono completamente conosciute e le strategie di manutenzione richiedono ulteriori indagini. Questa tesi affronta queste sfide per l’elettrolizzatore alcalino, proponendo un quadro completo per il monitoraggio delle condizioni e l'ottimizzazione del piano di manutenzione. L’efficienza operativa e la degradazione dell’elettrolizzatore vengono descritti tramite i key performance indicator (KPIs), che serviranno per monitorare le condizioni, utilizzando direttamente rilevazioni di dati on-line, sul sito ed in tempo reale. Inoltre, la tesi esplora tecnologie di monitoraggio avanzate in grado di rilevare segni di degradazione precoce delle apparecchiature. Inoltre, il lavoro include l’approccio Failure Mode Effect Analysis (FMEA) dell'elettrolizzatore alcalino e del suo Balance of Plant (BoP). Questa ci porta ad identificare i potenziali failure mode ed i loro effetti, valutando l’impatto, la frequenza e la rilevabilità, e prioritizzandoli utilizzando i Risk Priority Number (RPNs). Saranno quindi evidenziati componenti critici e aree in cui la manutenzione dovrebbe essere investigata e pianificata, in modo da prevenire guasti e prolungare la durata dell’impianto. In conclusione, questa tesi fornisce un quadro di alto livello per migliorare la manutenzione e l'affidabilità degli elettrolizzatori alcalini nella produzione di idrogeno verde.
Failure mode effect analysis, FMEA: identifying degradation factors for maintenance of alkaline electrolyzers
Sirianni, Giada
2023/2024
Abstract
Green hydrogen production is one of solution to mitigate climate change. Despite its potential, the technologies employed are not completely known and their maintenance strategies require further investigation. This thesis addresses these challenges for an alkaline electrolyzer type, proposing a comprehensive framework for condition monitoring and maintenance plan optimization. The establishment of key performance indicators, KPIs, related to the degradation and operational efficiency will serve as the foundation of a condition monitoring system directly related to real-time data detection in the system. In addition, the thesis explores advanced monitoring technologies, able to detect sign of early degradation in equipment. Furthermore, the work includes a Failure Mode Effects Analysis (FMEA) of alkaline electrolyzer and its Balance of Plant (BoP), by identifying potential failure modes and their effects, evaluating their impacts, frequency and detectability, and prioritizing them by Risk Priority Numbers (RPNs evaluation). By focusing on critical components and processes, the FMEA highlights pieces of equipment and areas where maintenance efforts should be concentrated to prevent failures and extent the lifespan of the system. In conclusion, this thesis provides a high level framework to enhance the maintenance and reliability of alkaline electrolyzers in green hydrogen production.File | Dimensione | Formato | |
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Descrizione: Failure mode effect analysis, FMEA: identifying degradation factors for maintenance of alkaline electrolyzers; MSc Thesis Giada Sirianni
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https://hdl.handle.net/10589/222747