Rasool et al. _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Table 5 . Effect of change in failure rate (μ2) on the reliability of the Repulping/Slushing and stock preparation unit Time (hrs.) System Subsystem II μ2 = 0.01 μ2 = 0.02 μ2 = 0.03 μ2 = 0.04 μ2 = 0.01 μ2 = 0.02 μ2 = 0.03 μ2 = 0.04 10 0.078866 0.071361 0.06457 0.058426 0.904837 0.818731 0.740818 0.67032 20 0.00622 0.005092 0.004169 0.003414 0.818731 0.67032 0.548812 0.449329 30 0.000491 0.000363 0.000269 0.000199 0.740818 0.548812 0.40657 0.301194 40 3.87E-05 2.59E-05 1.74E-05 1.17E-05 0.67032 0.449329 0.301194 0.201897 50 3.05E-06 1.85E-06 1.12E-06 6.81E-07 0.606531 0.367879 0.22313 0.135335
Table 6 . Effect of change in failure rate (μ 3 ) on the reliability of the Deflaking and stock preparation unit Time (hrs.) System Subsystem III μ3 = 0.05 μ3 = 0.06 μ3 = 0.07 μ3 = 0.08 μ3 = 0.05 μ3 = 0.06 μ3 = 0.07
μ3 = 0.08 0.090718 0.00823 0.000747 6.77E-05 6.14E-06
10 20 30 40 50
0.096328 0.009279 0.000894 8.61E-05 8.29E-06
0.071361 0.005092 0.000363 2.59E-05 1.85E-06
0.066537 0.004427 0.000295 1.96E-05 1.3E-06
0.039164 0.001534 6.01E-05 2.35E-06 9.21E-08
0.22313 0.049787 0.011109 0.002479 0.000553
0.165299 0.027324 0.004517 0.000747 0.000123
0.122456 0.014996 0.001836 0.000225 2.75E-05
Table 7 . Effect of change in failure rate (μ 4 ) on the reliability of the Storage and Mixing Chest and stock preparation unit Time (hrs.) System Subsystem IV μ4 = 0.001 μ4 = 0.011 μ4 = 0.021 μ4 = 0.031 μ4 = 0.001 μ4 = 0.011 μ4 = 0.021 μ4 = 0.031 10 0.078866 0.071361 0.06457 0.058426 0.99005 0.895834 0.810584 0.733447 20 0.00622 0.005092 0.004169 0.003414 0.980199 0.802519 0.657047 0.537944 30 0.000491 0.000363 0.000269 0.000199 0.970446 0.718924 0.532592 0.394554 40 3.87E-05 2.59E-05 1.74E-05 1.17E-05 0.960789 0.644036 0.431711 0.289384 50 3.05E-06 1.85E-06 1.12E-06 6.81E-07 0.951229 0.57695 0.349938 0.212248 Table 8 . Effect of change in failure rate (μ 5 ) on the reliability of the Paper Machine and stock preparation unit Time (hrs.) System Subsystem V μ5 = 0.02 μ5 = 0.03 μ5 = 0.04 μ5 = 0.05 μ5 = 0.02 μ5 = 0.03 μ5 = 0.04 μ5 = 0.05 10 0.078866 0.071361 0.06457 0.058426 0.99005 0.895834 0.810584 0.733447 20 0.00622 0.005092 0.004169 0.003414 0.980199 0.802519 0.657047 0.537944 30 0.000491 0.000363 0.000269 0.000199 0.970446 0.718924 0.532592 0.394554 40 3.87E-05 2.59E-05 1.74E-05 1.17E-05 0.960789 0.644036 0.431711 0.289384 50 3.05E-06 1.85E-06 1.12E-06 6.81E-07 0.951229 0.57695 0.349938 0.212248 From Table 9, it is identified that with the passes of time the probability of restoration to operative state of any subsystem and stock preparation unit increases. It is revealed that any failure in subsystem Deflaking takes maximum time in its restoration.
_____________________________________________________________________________________________ 14 Braz. J. Biom. ǡǤ 43 ǡǦͶ͵ʹǡʹͲʹͷǤ
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