A Study on Estimating the Next Failure Time of Compressor Equipment in an Offshore Plant

Table 4

Computational experiment results of regression model based approach.

	10		15		20		25
		MAPE	Est.	MAPE	Est.	MAPE	Est.	MAPE
1	9.323	7.01%	18.692	21.91%	29.264	37.61%	45.582	58.32%
2	9.836	1.65%	21.562	35.89%	36.439	58.25%	87.836	111.38%
3	11.632	15.09%	24.609	48.52%	38.227	62.61%	58.742	80.59%
4	6.703	39.47%	13.807	8.28%	22.950	13.74%	37.241	39.33%
5	4.897	68.52%	10.003	39.97%	17.013	16.14%	26.157	4.52%
6	10.510	4.97%	21.993	37.81%	35.793	56.61%	59.961	82.30%
7	9.318	7.06%	18.093	18.69%	27.484	31.52%	40.181	46.58%
8	6.443	43.26%	14.471	3.59%	26.705	28.71%	181.786	151.64%
9	10.946	9.03%	22.764	41.12%	36.031	57.22%	56.923	77.93%
10	9.669	3.36%	18.323	19.94%	27.370	31.12%	39.112	44.02%
11	9.845	1.57%	20.124	29.17%	31.880	45.80%	50.038	66.73%
12	6.977	35.62%	14.004	6.87%	22.399	11.32%	33.762	29.82%
13	7.267	31.65%	14.912	0.59%	23.800	17.35%	36.211	36.63%
Average	20.64%		24.03%		36.00%		63.83%
Total average	36.12%

Residual life time (unit : hour).
Failure event number.
Residual life time estimated by regression model based approach (unit : hour).