Specialised Operations Services

Plant: 350 MW PF-fuelled B&W Reheat Boiler
Query: Forced-cool Shutdown for Penthouse Tube Leak
Explanation of Query: We were recently forced to undertake another Forced-cool Shutdown, due to a pendant superheater leak near the SH header (located in the Penthouse zone of the Boiler). This is becoming a frequent event. Despite our best efforts, the process took several days to cool the “high-zone” boiler steam and water pipework, to attain a level which allowed for limited and short-term access to the Penthouse, and for the repairs to be undertaken. Is there a better and faster way to cool this pipework?

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