|
After considering the special aspects and taking into account the complexity of the networks, a cost saving potential of up to 10 Euros per metre for some of the participants could be identified. Especially through an extension of the revision cycles of the electricity networks costs can be saved. While the average revision time span is 5 years, a yearly revision is norm at many parks. At best, the revision cycle could be extended to 10 years.
Maintenance rates of steam networks in relation to the length of the network show a range between 17 and 28 Euros per metre based on total costs and 11 and 24 Euros per metre based on influenceable costs. The cost saving potential of a maximum of 5 Euros per metre is clearly lower than that of the electricity networks.
Within a continual optimisation of water networks, the many weak spots and leakages, which lead to significant losses, are of relevant importance. Some industrial parks have systematically set up a network of water metres which has led to an improvement of the identification of weak spots and a decrease in losses. Also the installation of energy efficient pumps is becoming important, due to the ever increasing energy prices. The costs for electricity for the generation and distribution of industrial water lie between 15 and 45 Euros per thousand cubic metres, whereby the specific electricity costs were corrected by the discharge and production volume.
Respective key performance indicators have also been defined and calculated for all other areas. For example, the activities of the works fire and security services have been standardised and analysed in detail so that comparability was achieved. The standardisation of maintenance costs for buildings on the basis of standard production costs (and not based on replacement value) makes the customer specific allocation of maintenance costs possible.
|
