Design Bases Specification Example 1:
At the West Bend Nuclear Plant, residual heat will be removed
under normal conditions by using the High Pressure Core Spray
System when vessel pressure is above 700 psig, Low Pressure
Core Spray when system pressure is 700 psig or below, and
transferred through the Residual Heat Removal System to the
Essential Service Water System and ultimately through the
cooling towers to atmosphere.
Design Bases Specification Example 2:
At the West Bend Nuclear Plant, the Auxiliary Feedwater
System is used to remove residual heat from the reactor core
in conjunction with the Reactor Coolant System and the Main
Steam System when the Main Feedwater System is unavailable.
Design Bases Specification Example 3:
At the West Bend Nuclear Plant, the AFW system will be
designed with sufficient redundancy of components so that
under accident conditions the safety function can be
performed assuming a single active component failure. (This
may be coincident with the loss of offsite power for certain
events.) Branch Technical Position ASB 10-1 46 as it relates
to AFW pump drive and power supply diversity shall be used in
meeting these criteria.
Design Bases Specification Example 4:
At the West Bend Nuclear Plant, the AFW system will be
designed to include the capability to isolate components,
subsystems, or piping if required so that the system safety
function will be maintained.
Design Bases Specification Example 5:
At the West Bend Nuclear Plant, the AFW system will include
design provisions to permit appropriate functional testing of
the AFW components to assure operability and performance of
active components during normal, shutdown, and accident
conditions.
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Specifications Description