Table 3: Optimal maintenance policies with NRRW when wr=0.2.

β A y Optimal
policy		 NFRRW NPRRW
cr cr
30 50 70 30 50 70
2 0.1 0.25wr   τ* 1.5914 2.5278 3.2843 2.6396 3.8669 4.8616
C(τ*) 18.2483 23.8669 28.4061 24.5379 31.9012 37.8696
0.50wr   τ* 1.5741 2.5146 3.2732 2.3131 3.4538 4.3771
C(τ*) 18.4445 24.0873 28.6391 22.8788 29.7227 35.2624
0.25 0.25wr   τ* 1.5343 2.4841 3.2476 2.6045 3.8398 4.8388
C(τ*) 18.8055 24.5048 29.0858 25.2268 32.6387 38.6326
0.50wr   τ* 1.5166 2.4707 3.2364 2.2749 3.4244 4.3523
C(τ*) 18.9997 24.7244 29.3183 23.5495 30.4466 36.0141
0.5 0.25wr   τ* 1.4366 2.4102 3.1858 2.5452 3.7944 4.8005
C(τ*) 19.7193 25.5615 30.2148 26.3710 33.8660 39.9032
0.50wr   τ* 1.4183 2.3966 3.1744 2.2104 3.3751 4.3109
C(τ*) 19.9100 25.7795 30.4464 24.6621 31.6506 37.2655
2.3 0.1 0.25wr   τ* 0.8747 1.4951 1.9812 1.5668 2.3475 2.9621
C(τ*) 20.6594 28.0983 34.2712 28.9908 39.1016 47.5210
0.50wr   τ* 0.8482 1.4726 1.9606 1.3400 2.0745 2.6515
C(τ*) 20.9317 28.4391 34.6533 26.8014 36.1430 43.9047
0.25 0.25wr   τ* 0.7916 1.4250 1.9175 1.5031 2.2913 2.9097
C(τ*) 21.4365 29.0934 35.3963 30.0731 40.3622 48.8930
0.50wr   τ* 0.7647 1.4023 1.8970 1.2736 2.0165 2.5977
C(τ*) 21.7051 29.4354 35.7816 27.8312 37.3574 45.2330
0.5 0.25wr   τ* 0.6492 1.3071 1.8114 1.3976 2.1992 2.8242
C(τ*) 22.6977 30.7558 37.2894 31.9065 42.5036 51.2232
0.50wr   τ* 0.6210 1.2841 1.7907 1.1630 1.9211 2.5097
C(τ*) 22.9563 31.0981 37.6786 29.5691 39.4174 47.4874
2.7 0.1 0.25wr   τ* 0.3859 0.8051 1.1229 0.8517 1.3570 1.7429
C(τ*) 22.7527 32.2743 40.3832 33.4172 46.8262 58.2910
0.50wr   τ* 0.3513 0.7745 1.0943 0.6854 1.1672 1.5341
C(τ*) 23.0785 32.7496 40.9568 30.5971 42.9332 53.4469
0.25 0.25wr   τ* 0.2792 0.7119 1.0361 0.7632 1.2763 1.6660
C(τ*) 23.6724 33.6686 42.0844 34.9501 48.8081 60.5768
0.50wr   τ* 0.2434 0.6810 1.0075 0.5939 1.0847 1.4558
C(τ*) 23.9778 34.1430 42.6656 32.0029 44.7963 55.6147
0.5 0.25wr   τ* 0.0916 0.5533 0.8905 0.6156 1.1434 1.5400
C(τ*) 25.0248 35.9644 44.9553 37.5633 52.2355 64.5396
0.50wr   τ* 0.0529 0.5214 0.8614 0.4399 0.9482 1.3273
C(τ*) 25.2713 36.4257 45.5414 34.3655 48.0026 59.3638