• ISA77.13, Turbine Steam By-Pass Systems


    After review of the current ANSI/ISA-77.13.01,Fossil Fuel Power Plant Steam Turbine Bypass System, standard at the meeting in early June 2013, ISA77.13 members decided that a revision is necessary. To accomplish this task and solicit new input, the committee is seeking additional members.

    The standard establishes the minimum requirements for design specifications to implement steam turbine bypass systems and hardware configurations for drum and once-through, fossil fuel power plant boilers. The standard's scope covers the design requirements and operator interface for steam turbine bypass systems for drum and once-through steam generators and combined cycle plants. Hardware configurations are suggested to obtain the minimum design requirements to obtain a safe and operable system, and both fixed percentage bypass and variable pressure systems are covered. The standard applies to boilers with steam capacities of 200,000 lb/hr (25 kg/s) or greater.

    If you are interested in contributing to this revision, or for more information, please contact

    Eliana Brazda
    ISA Standards Administrator
    ebrazda@isa.org
    (919) 990-9228

    The initial work and review of the standard will be handled through email, teleconference, and web meetings, with a face-to-face meeting most likely in conjunction with the 2014 Power Industry Division Symposium.

    Jeff Schleis
    Chair

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