pof_future_submarine_cables {CNAIM} R Documentation

## Future Probability of Failure for Submarine Cables

### Description

This function calculates the Future annual probability of failure per kilometer for submarine cables. The function is a cubic curve that is based on the first three terms of the Taylor series for an exponential function. For more information about the probability of failure function see section 6 on page 30 in CNAIM (2017).

### Usage

```pof_future_submarine_cables(
sub_cable_type = "EHV Sub Cable",
utilisation_pct = "Default",
operating_voltage_pct = "Default",
topography = "Default",
sitution = "Default",
wind_wave = "Default",
intensity = "Default",
landlocked = "no",
sheath_test = "Default",
partial_discharge = "Default",
fault_hist = "Default",
condition_armour = "Default",
age,
reliability_factor = "Default",
simulation_end_year = 100
)
```

### Arguments

 `sub_cable_type` String. A sting that refers to the specific asset category. See See page 15, table 1 in CNAIM (2017). Options: ```sub_cable_type = c("HV Sub Cable", "EHV Sub Cable", "132kV Sub Cable")```. The deafult setting is `sub_cable_type = "EHV Sub Cable"`. `utilisation_pct` Numeric. The max percentage of utilisation under normal operating conditions. `operating_voltage_pct` Numeric. The ratio in percent of operating/design voltage. `topography` String. Describe the topography around the submarine cable. Options: ```typography = c("Low Detrimental Topography", "Medium Detrimental Topography", "High Detrimental Topography", "Very High Detrimental Topography","Default" )``` `sitution` String. Descibes how the submarine cable af fixed to the sea floor. Options: `sitution=c("Laid on bed", "Covered", "Buried", "Default")` `wind_wave` Numeric. Options: `wind_wave=c(1, 2, 3, "Default")`. Settings: `wind_wave = 1`: Sheltered sea loch, Wind <200 W/m2 `wind_wave = 2`: Wave <15kW/m, Wind 200-800 W/m2 `wind_wave = 3`: Wave <15kW/m, Wind 200-800 W/m2 `wind_wave = "Default"`: No data available `intensity` String. Combined wave and current energy factor. Options: `intensity=c("Low", "Moderate", "High", "Default")`. `landlocked` String. Options: `landlocked = c("yes","no")`. Default setting for `landlocked = "no"`. `sheath_test` String. Indicating the state of the sheath. Options: ```sheath_test = c("Pass", "Failed Minor", "Failed Major", "Default")```. See page 143, table 182 in CNAIM (2017). `partial_discharge` String. Indicating the level of partial discharge. Options: ```partial_discharge = c("Low", "Medium", "High", "Default")```. See page 144, table 183 in CNAIM (2017). `fault_hist` Numeric. The calculated fault rate for the cable per annum per kilometer. A setting of `"No historic faults recorded"` indicates no fault. See page 144, table 184 in CNAIM (2017). `condition_armour` String. Indicating the external condition of the submarine cables armour. Options: `condition_armour = c("Good","Poor","Critical","Default")` `age` Numeric. The current age in years of the cable. `reliability_factor` Numeric. `reliability_factor` shall have a value between 0.6 and 1.5. A setting of `"Default"` sets the `reliability_factor` to 1. See section 6.14 on page 69 in CNAIM (2017). `simulation_end_year` Numeric. The last year of simulating probability of failure. Default is 100.

### Value

Numeric. Current probability of failure per annum per kilometre.

### Source

DNO Common Network Asset Indices Methodology (CNAIM), Health & Criticality - Version 1.1, 2017: https://www.ofgem.gov.uk/system/files/docs/2017/05/dno_common_network_asset_indices_methodology_v1.1.pdf

### Examples

```# Current annual probability of failure for 1 km EHV Sub Cable
pof_future_submarine_cables(
sub_cable_type = "EHV Sub Cable",
utilisation_pct = "Default",
operating_voltage_pct = "Default",
topography = "Default",
sitution = "Default",
wind_wave = "Default",
intensity = "Default",
landlocked = "no",
sheath_test = "Default",
partial_discharge = "Default",
fault_hist = "Default",
condition_armour = "Default",
age = 10,
reliability_factor = "Default",
simulation_end_year = 100)
```

[Package CNAIM version 1.0.1 Index]