CNAIM (version 2.1.4)

pof_future_poles: Future Probability of Failure for Poles

Description

This function calculates the future annual probability of failure per kilometer for a poles. 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 34 in CNAIM (2021).

Usage

pof_future_poles(
  pole_asset_category = "20kV Poles",
  sub_division = "Wood",
  placement = "Default",
  altitude_m = "Default",
  distance_from_coast_km = "Default",
  corrosion_category_index = "Default",
  age,
  pole_decay = "default",
  observed_condition_inputs,
  reliability_factor = "Default",
  simulation_end_year = 100
)

Value

Numeric array. Future probability of failure per annum per kilometre for poles.

Arguments

pole_asset_category

String The type of asset category

sub_division

String. Refers to material the pole is made of.

placement

String. Specify if the asset is located outdoor or indoor.

altitude_m

Numeric. Specify the altitude location for the asset measured in meters from sea level.altitude_m is used to derive the altitude factor. See page 111, table 23 in CNAIM (2021). A setting of "Default" will set the altitude factor to 1 independent of asset_type.

distance_from_coast_km

Numeric. Specify the distance from the coast measured in kilometers. distance_from_coast_km is used to derive the distance from coast factor See page 110, table 22 in CNAIM (2021). A setting of "Default" will set the distance from coast factor to 1 independent of asset_type.

corrosion_category_index

Integer. Specify the corrosion index category, 1-5.

age

Numeric. The current age in years of the conductor.

pole_decay

Numeric Pole Decay

observed_condition_inputs

Named list observed_conditions_input conductor_samp = c("Low","Medium/Normal","High","Default"). See page 161, table 199 and 201 in CNAIM (2021).

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 73 in CNAIM (2021).

simulation_end_year

Numeric. The last year of simulating probability of failure. Default is 100.

Examples

# Future annual probability of failure for HV Poles
pof_future_poles(
pole_asset_category = "20kV Poles",
sub_division = "Wood",
placement = "Default",
altitude_m = "Default",
distance_from_coast_km = "Default",
corrosion_category_index = "Default",
age = 10,
observed_condition_inputs =
list("visual_pole_cond" =
list("Condition Criteria: Pole Top Rot Present?" = "Default"),
"pole_leaning" = list("Condition Criteria: Pole Leaning?" = "Default"),
"bird_animal_damage" =
list("Condition Criteria: Bird/Animal Damage?" = "Default"),
"top_rot"  = list("Condition Criteria: Pole Top Rot Present?" = "Default")),
pole_decay = "Default",
reliability_factor = "Default",
simulation_end_year = 100)