This article contains information about the input data for both cables and burial cables, what your options are, and an explanation for each input
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Editing the input values for the cables
Editing the input values for the cable burials
Editing the input values for the cables
Members
You will find all cables names and locations. It is also possible to edit them by clicking on each instance and add more cables by clicking + Add instances.
If you click the "Edit" button (pencil), you are able to edit the Cable length in meters. When simulating installation of cables, it will use the cable length as it's length, and disregard the end-points of the cables.
Parameters
| Input label | Mandatory | Description |
|---|---|---|
| Loadout port | x | Base where the Asset is assigned for loadout. It needs to be the same Port where the vessel for that task is |
Scheduled Maintenance (OMDesign)
Scheduled maintenance is the maintenance that is planned. Annual service, inspections, certifications, and other types of scheduled maintenance can be specified for a substation type. You can add as many SM tasks as needed by clicking + Add Scheduled Maintenance button in the left side of the modal. Once the task is filled, click Save. Each scheduled maintenance task can be specified by using the following:
| Input label | Mandatory | Description |
|---|---|---|
| Start date | x | The start date of the scheduled maintenance |
| Scheduling | x | Here it's possible to define if a scheduled maintenance should be done every defined period (e.g. every year) or on a percentages basis of the assets each year. Depending on this, the field "Asset percentage" or the field "Recurrence" mentioned below. You can use Scheduling or Recurrence, but not both at the same time |
| Asset percentage | x | Describes the percentage of the substations that will be maintained the year defined |
| Recurrence | x | The frequency of the maintenance. The number is the time between every maintenance task. If 0 is applied, this task will only be done the first year; if 1 is applied, the task is done every year; if 2 is applied, the task is done every other year; and so on |
| Production impact during work | x | The failure in the substation will stated the % lost production (% reduced production). If there are multiple substations down, the one with the highest % reduced production will set how much is lost |
| Vessel | x | Type of vessel that will be allowed to do Scheduled maintenance (CTV, SOV, Helicopter) |
| Personnel | x | The role and number of specific personnel needed to carry out the task |
| Man hours time series | x | Add simulation year (e.g. 1, 2...) and Total man hours needed for the task each defined year |
| Total man hours | x | Total Man hours needed for the task |
| Repair time | - | Total repair time for one maintenance task. This is automatically calculated dividing Total man hours by the total number of technicians in the task |
| Spare part cost (per event) | - | The cost of spare parts per event. Currency can be defined, Index and year. Also, cost time series can be saved for user library purposes |
| Consumables (per event) | - | A variety of other costs involved with the task, for each. Currency can be defined, Index and year. Also, cost time series can be saved for user library purposes |
Corrective maintenance
In the tab Corrective maintenance, the failures are defined. These failures will occur randomly when simulating and hence generate unplanned maintenance. You can add as many component tasks as needed by clicking + Add Corrective Maintenance button in the left side of the modal.
The fields represented in the following list are common regardless of the vessel assigned.
| Input label | Mandatory | Description |
|---|---|---|
| Severity | x | The prioritisation of the failure. If a critical failure occurs, the production must shut down in order to repair it and no other maintenance will be planned until that is fixed. A non-critical will not affect production, and other maintenance can be carried out. If a none consequence failure occurs, it will be repaired the next time a maintenance task is carried out at the specific turbine. Opportunistic represents unplanned failures and will not affect production |
| Distribution | x | The statistical distribution of the failure. Exponential or Weibull. If Weibull is selected, the shape parameter can be defined and an annual failure rate |
| Failure rate time series | x | Only applies to exponential distribution. Describing the percentage of the turbines that will fail in specific years |
| Annual failure rate | x | The annual frequency of the failure. The same every year. If exponential and time series is applied, this field will not be available |
| Production impact during work | x | The failure in the substation will stated the % lost production (% reduced production). If there are multiple substations down, the one with the highest % reduced production will set how much is lost |
| Vessel | x | The types of vessels needed to repair the failure |
| Spare part cost (per event) | - | The cost of spare parts needed to repair the failure. Currency can be defined, Index and year. Also, cost time series can be saved for user library purposes |
| Consumables (per event) | - | All sorts of other costs involved in repairing the failure. Currency can be defined, Index and year. Also, cost time series can be saved for user library purposes |
Weather
This is the weather data that will be used when simulating. It is selected from the input library. A weather file can be uploaded to the input library. See input library for more information. A weather data file is not needed if the Disable method is selected for the simulation. The Power law exponent for wind profile is 0.11 by default in all assets. It is used to represent the sea surface roughness for the extrapolation of wind speed in case of wind speed for more than one hub height is defined in the weather data time series. It can also be applied to all case.
| Input label | Mandatory | Description |
|---|---|---|
| Select weather from input library | x | Click here to upload your weather data |
| Apply this weather to the entire case | Click here to apply your uploaded weather file to the entire case (other assets and bases) |
Editing the input values for the cable burials
Members
You will find all burial names and locations. It is also possible to edit them by clicking on each instance and add more cables by clicking +Add instances.
Parameters
For Construction input can be found under this tab:
| Input label | Mandatory | Description |
|---|---|---|
| Loadout port | x | Base where the Asset is assigned for loadout. It needs to be the same port where the vessel for that task is |
Weather
This is the weather data that will be used in the simulation. Can use either imported weather data, or the ERA5 weather data. Please see this article on how the two different weather files selections work.
The Power law exponent for wind profile is 0.11 by default in all assets. It is used to represent the sea surface roughness for the extrapolation of wind speed in case of wind speed for more than one hub height is defined in the weather data time series. It can also be applied to all cases.
| Input label | Mandatory | Description |
|---|---|---|
| Select weather from input library OR select a weather file via the map | x | Select the weather file to be used. |
| Apply this weather to the entire case | - | Click here to apply your uploaded weather file to the entire case (other assets and bases) |