There are several input values for a jacket. Some are the same for O&M Design™ and Con Design™. These are: members, parameters and weather.
Click the link to go directly to the information you're looking for:
Parameters
| Input label | Mandatory | Description |
|---|---|---|
| Remarks | General comments field |
For Construction you will find additional fields:
| Input label | Mandatory | Description |
|---|---|---|
| Installation method | x | Regular installation or feeder concept using barge vessels |
| Loadout port | x | The base where the Asset is assigned for loadout. It needs to be the same Port where the vessel for that task is. |
Scheduled maintenance
Scheduled maintenance is the maintenance that is planned. Annual service, inspections, certifications, and other types of scheduled maintenance can be specified for a jacket 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 jackets 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 | x | The failure in the jacket will stated the % lost production (% reduced production). If there are multiple jackets 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 jacket will stated the % lost production (% reduced production) when the technicians start working on the task |
| 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 |
Component failures with CTV, SOV or helicopter
There are different fields depending on the possible transportations. Below a list of the possible information for a failure which has to be fixed with a CTV, SOV or a helicopter.
| Input label | Mandatory | Description |
|---|---|---|
| Vessel | x | The types of vessels needed to repair the failure, in this case, a CTV, SOV or helicopter |
| Man hours time series | x | Add simulation year (e.g. 1, 2...) and Total man hours needed for the task each defined year |
| Man hours | x | Total Man hours needed to repair the failure |
| Repair time | - | Total repair time for one failure. This is automatically calculated dividing Man hours by the total number of technicians in the task |
| Lead time | x | The lead time is the preparation time at the port. This could e.g. include the procurement of spare parts. Simultaneous to this, details about transit to the wind farm, connecting- and disconnecting the turbine, and transit from the wind farm will be prepared. The lead time starts when the failure happens, and it cannot be scheduled until the lead time is finished. |
| Technicians | x | The specific role and personnel number needed to repair the failure |
| Limitations | - | Weather limitations when repairing the failure. Firstly, the limitations must be defined in the weather criteria tab, making it possible to select them at the bottom in the different tasks created. Add a limitation title and define wave and wind speed criteria |
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) |