Development of PYMUS+ Code for Quantitative Evaluation of Nuclear Material Accounting (NMA) System

Table 3

Process and measurement model in intercomparative study (2).

Process Point	Nuclear Material	Number of Measurements	ID (Measurement Approach)	Measurement Uncertainty
				Random Uncertainty ()	Systematic Uncertainty ()
Input (UO2 Powder)	240,000 kg U/year	12,000	11(Bulk)	0.0658	0.0439
		400	12(Sampling)	0.0531	0
		400	13(DA)	0.0433	0.0571
Inventory (1) (Dirty Scrap)	7,200 kg U	1,800	21(Bulk)	0.25	0.167
		60	22(Sampling)	1.81	0
		60	23(DA)	2.74	0.896
Inventory (2) (Grinder Sludge)	4,000 kg U	800	21(Bulk)	0.25	0.167
		48	32(Sampling)	4.18	0.444
		48	23(DA)	2.74	0.896
Output (1) (Sintered UO2 pellets)	238,800 kg U/year	47,760	41(Bulk)	0.0877	0.0175
		240	42(Sampling)	0	0
		240	43(DA)	0.0568	0.0341
Output (2) ( Solid Waste)	1,200 Kg U/year	2,770	53(NDA)	5.77	4.62