1. 1) USNRC, Reactor Safety Study : An Assessment of Accident Risks in U.S. Commercial Nuclear Power Plants, WASH-1400 (NUREG 75/014), (1975).
2. 2) P. D. Smith. et al., NUREG/CR-2015, (1981-1882).
3. 3) Commonwealth Edison, Zion PSA, (1981).
4. 4) K. Abe, et al., NUCSAFE 88, (1988).