applied to tþ1 (e.g. 2009) and so on. Consistency results for each pairwise comparison
matrix are accepted because they comply with the rule CRp10 per cent (which is of
course a questionable threshold as far as it can be 5 or 20 per cent). This condition allows
continuing with the result analysis and the ranking, criticality and dynamism search in
the last three period’s assessments (Gonzalez-Prida et al., 2012a).
According to the scale defined at the beginning of the case study, critical equipment
for each period are those with the highest percentage in their results.
As noted, these matrices are obtained applying the conventional AHP in each t.
Therefore, there should be as many reciprocal matrices as there are periods under
study, hence only one matrix is obtained for each t.