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  1. Charliebos

    thread794-210028 Hi MJCronin,

    MJCronin, Thank you for your response. The site has a 12 years old 150,000 lb, 390 psig, 660F, "D" tube boiler. The startup process required the auxiliary boiler to cycle the flame ON's and OFF's until it meets the specified steam conditions. This cause thermal and fatigue stresses to the...
  2. Charliebos

    thread794-210028 Hi MJCronin,

    thread794-210028 Hi MJCronin, What was your outcome on the auxiliary design? We have a similar situation; I am investigating to find method and/or process to keep the existing 150K "D" tube boiler at hot standby and minimize the cycling of the flame on's and off's during startup. charlie

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