This paper deals with a large steam driven boiler feed pump which is normally refurbished at 50,000 hours run time but because of projected decommissioning of Huntly this was not done i.e. no funds for major maintenance. The pump in question has now done 78,000 hours and is basically worn out. Changing load demands caused by very low hydro storage meant that every available machine at Huntly was required to run, including this worn out pump with high vibration. This paper discusses the problems encountered including the mitigations put in place to keep this pump running and keep NZs lights on.
Worn out with high vibration but must run13:35-14:10
Simon Hurricks / Predictive Maintenance Engineer - Genesis Energy