Risk-Based Allowed Outage Time and Surveillance Test Interval Extensions for Angra 1

Table 9

AFWS results.

	r	R (yr^−1)	ΔCDF (yr^−1)	CDF1 (yr^−1)	f (yr^−1)	d (yr)
(1)	5.8𝐸−06	5.1𝐸−06	3.0𝐸−04	3.4𝐸−04	0.88	1.92𝐸−02
(2)	5.0𝐸−06	4.4𝐸−06	2.63𝐸−04	3.03𝐸−04	0.88	1.92𝐸−02
(3)	4.6𝐸−06	4.1𝐸−06	2.42𝐸−04	2.82𝐸−04	0.88	1.92𝐸−02
(4)			1.0𝐸−06<1.4𝐸−06<1.0𝐸−05	4.15𝐸−05

(1) Analysis of the AOT extension.
(2) Analysis of the test of the redundant motor-operated pump.
(3)Analysis of the test of the redundant motor-operated pump and the turbine-driven pump.
(4) Analysis of the STI extension.