Multiple department involve in Maintainance Work

Hi Gurus..

We are implementing eAM for manufacturing plant. We have more than 10k maintenance assets in Plant.  We have 7 maintenance departments under plant which do maintenance work on asset.

1.       When we define asset which department we can consider as owning department as all assets are belongs to Plant not to specific maintenance department?

2.       Exa.  One breakdown happened on asset and two department ( Mechnical , Elec dept). Require to do maintenance work on asset.

·         Should we create one single work order and define two operation and assign operation to each department?

Operation 1: Mechanical Dept

Operation 2 : Elec Dept

So In this case which dept we can consider as owning dept of WO?