Accuracy and Uncertainty Analysis of PSBT Benchmark Exercises Using a Subchannel Code MATRA

Table 4

Uncertainty parameters.

Parameter	Accuracy	pdf
Operating parameters;
(i) Pressure	±1%	Normal
(ii) Channel flow rate	±1.5%	Normal
(iii) Bundle power	±1%	Normal
(iv) Channel inlet temperature	±1^°C	Flat
Modeling parameters;
(i) Bundle friction factor	±10%	Flat
(ii) Spacer grid loss factor	±10%	Flat
(iii) Turbulent mixing parameter	±10%	Normal