PWRs were originally designed to serve as nuclear marine propulsion for nuclear submarines and were used in the original design of the second commercial power plant at Shippingport Atomic Power Station.
PWR pada awalnya dirancang untuk melayani propulsi kelautan sebagai nuklir untuk kapal selam nuklir dan digunakan dalam desain asli dari pembangkit listrik komersial kedua di Shippingport Atomic Power Station.