Beating boiler failure
Design and manufacturing requirements for shell boilers are covered by BS2790:1992 and water tube boilers by BS1113:1992, while the recommendations for treatment of water for steam and hot water boilers are detailed in BS2486:1997. So, if boilers are built to the standard and their water treatment carried out likewise, why do they still fail?
Unreasonable engineering
So how do you fancy a bit of unreasonable engineering? How about building a variable speed electric motor, rated at 2.5MW for pumping operations 3,000 metres down on the sea bed? Oh, and, for good measure, let's have it driven by an 11kV supply 30km away, and plan for a design life of 15 years, with minimum time between interventions of five years.