• ISA Insights
    July 2013

    Seeking new members for steam turbine bypass system standard revision

    ISA77.13 standards committee members have determined that a revision of ANSI/ISA-77.13.01-1999 (R2008),Fossil Fuel Power Plant Steam Turbine Bypass System, is needed. To accomplish this task and solicit new input, the committee is seeking new members to participate. 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 participating in the revision of ANSI/ISA-77.13.01, please contact Eliana Brazda. 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.