Study of Thorium-Plutonium Fuel for Possible Operating Cycle Extension in PWRs

Table 2

Key safety parameters, their limits, and the calculated values for the Th-MOX and the reference UOX core. No limit is specified for moderator temperature coefficient in Ringhals 3.

Parameter	Limit	UOX-ref	Th-MOX
Max MDC; [(Δ𝑘/𝑘)/(g/cm^3)]	0.50	0.41	0.34
Max MTC [pcm/K]	—	−1.3	−4.0
Max ITC [pcm/K]	0.0	−4.4	−7.9
Min DTC [pcm/K]	−4.00	−3.72	−4.53
Max DTC [pcm/K]	−1.70	−2.10	−2.36
Min DPC [pcm/% power]	−21.0	−15.5	−21.5
Max DPC [pcm/% power]	−6.5	−9.8	−14.6
Min 𝛽eff EOC [pcm]	430	502	350
Max 𝛽eff BOC [pcm]	720	647	370