power pool which contained one 5 GWe SPS and for the other half of the day, each would operate as if it contained only conventional generators. The calculation of LOLP (and consequently n.) for each X X/ of these two power pools took this shift into account explicitly. Two different sets of values for 5t„ have been £m calculated for each of the 30 GWe power pools. In one set of numbers the demand for electric power in the power pool being considered was higher than in the other. For the other set of numbers, the demand for electric power in the power pool being considered is lower than in the other . These sets of <5t »s (Table A.4) apply to each of the £m GWe power pools independently. LOLP. for each of the two power consuming elements of the composite power pool was calculated independently with various assumed values of n„ for both the L and H sets of fit. 's. The L set x xm assumed that this pool contained n. conventional generators and the H set assumed that the pool contained the n„ conventional generators plus a 5 GWe SPS. These two LOLPs were averaged to give the LOLP for each of the component power pools containing n. conventional generators for that particular maintenance interval. The values of n^ which gave approximately the design LOLP (for one SPS) are entered in Table A,8 in the two columns labelled "No Maintenance Required". If each of the component 30 GWe power pools contained only one SPS ground station; each of these stations would have to be shut down for 3 maintenance intervals each year. During these intervals
RkJQdWJsaXNoZXIy MTU5NjU0Mg==