Table 3.

Determining the optimal period for conducting preventive maintenance operations and total downtime D (K).

	Machine Alba 26		Machine Crupp 21
T(days)	F(K)	D B (K)	F(K)	D C (K)
1	0.0286	0.0898	0.0265	0.0895
2	0.1035	0.0525	0.0804	0.0508
3	0.2218	0.0415	0.1554	0.0382
4	0.3856	0.0376	0.2503	0.0325
5	0.5992	0.0368	0.3652	0.0296
6	0.8694	0.0377	0.5012	0.0282
7	1.2052	0.0398	0.6599	0.0278
8	1.6182	0.0428	0.8434	0.0279
9	2.1224	0.0468	1.0543	0.0284
10	2.7355	0.0516	1.2956	0.0293
11	3.4787	0.0574	1.5707	0.0306
12	4.3780	0.0643	1.8838	0.0321
13	5.4649	0.0724	2.2396	0.0339
14	6.7774	0.0818	2.6433	0.0360
15	8.3612	0.0928	3.1009	0.0383
16	10.3093	0.1059	3.6303	0.0411
17	12.5770	0.1204	4.2066	0.0439