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#' @title Safety Consequences of Failure for Switchgears, Transformers &
#' Overhead Lines
#' @description This function calculates safety consequences of failure
#' for switchgear, transformers and overhead lines
#' (cf. section 7.4, page 80, CNAIM, 2021). Safety consequences of failure
#' is used in the derivation of consequences of failure see \code{\link{cof}}().
#' @param type_risk String. Risk that the asset presents to the
#' public by its characteristics and particular situation. Options:
#' \code{type_risk = c("Low", "Medium", "High", "Default")}
#' (cf. table 225, page 183, CNAIM, 2021).
#' A setting of \code{"Default"} equals a setting of \code{"Medium"}.
#' @param location_risk String. Proximity to areas that may affect its
#' likelihood of trespass or interference. Options:
#' \code{location_risk = c("Low", "Medium", "High", "Default")}
#' (cf. table 225, page 183, CNAIM, 2021).
#' A setting of \code{"Default"} equals a setting of \code{"Medium"}.
#' @param asset_type_scf String.
#' Options:
#' \code{asset_type_scf = c("LV Poles", "LV Circuit Breaker",
#' "LV Pillar (ID)", "LV Pillar (OD at Substation)",
#' "LV Pillar (OD not at a Substation)", "LV Board (WM)",
#' "LV UGB", "LV Board (X-type Network) (WM)", "6.6/11kV Poles",
#' "20kV Poles", "6.6/11kV CB (GM) Primary",
#' "6.6/11kV CB (GM) Secondary", "6.6/11kV Switch (GM)", "6.6/11kV RMU",
#' "6.6/11kV X-type RMU", "20kV CB (GM) Primary", "20kV CB (GM) Secondary",
#' "20kV Switch (GM)", "20kV RMU", "6.6/11kV Transformer (GM)",
#' "20kV Transformer (GM)", "33kV Pole", "66kV Pole",
#' "33kV OHL (Tower Line) Conductor", "33kV Tower", "33kV Fittings",
#' "66kV OHL (Tower Line) Conductor", "66kV Tower", "66kV Fittings",
#' "33kV CB (Air Insulated Busbars)(ID) (GM)",
#' "33kV CB (Air Insulated Busbars)(OD) (GM)",
#' "33kV CB (Gas Insulated Busbars)(ID) (GM)",
#' "33kV CB (Gas Insulated Busbars)(OD) (GM)", "33kV Switch (GM)",
#' "33kV RMU", "66kV CB (Air Insulated Busbars)(ID) (GM)",
#' "66kV CB (Air Insulated Busbars)(OD) (GM)",
#' "66kV CB (Gas Insulated Busbars)(ID) (GM)",
#' "66kV CB (Gas Insulated Busbars)(OD) (GM)", "33kV Transformer (GM)",
#' "66kV Transformer (GM)", "132kV OHL (Tower Line) Conductor",
#' "132kV Tower", "132kV Fittings",
#' "132kV CB (Air Insulated Busbars)(ID) (GM)",
#' "132kV CB (Air Insulated Busbars)(OD) (GM)",
#' "132kV CB (Gas Insulated Busbars)(ID) (GM)",
#' "132kV CB (Gas Insulated Busbars)(OD) (GM)", "132kV Transformer (GM)")
#'}
#' @return Numeric. Safety consequences of failure for
#' switchgear, transformers and overhead lines.
#' @source DNO Common Network Asset Indices Methodology (CNAIM),
#' Health & Criticality - Version 2.1, 2021:
#' \url{https://www.ofgem.gov.uk/sites/default/files/docs/2021/04/dno_common_network_asset_indices_methodology_v2.1_final_01-04-2021.pdf}
#' @export
#' @examples
#' # Safety consequences failure for a 6.6/11 kV transformer
#' s_cof_swg_tf_ohl(type_risk = "Default", location_risk = "Default",
#' asset_type_scf = "6.6/11kV Transformer (GM)")
s_cof_swg_tf_ohl <- function(type_risk = "Default",
location_risk = "Default",
asset_type_scf) {
`Asset Register Category` = NULL
# due to NSE notes in R CMD check
# Get category ------------------------------------------------------------
reference_costs_of_failure_tf <-
dplyr::filter(gb_ref$reference_costs_of_failure,
`Asset Register Category` ==
asset_type_scf)
# Reference safety cost of failure ----------------------------------------
scost <- reference_costs_of_failure_tf$`Safety - (GBP)`
# Safety Consequence factor ----------------------------------------------
safety_conseq_factor_sg_tf_oh <- gb_ref$safety_conseq_factor_sg_tf_oh
if (location_risk == "Default") location_risk <- "Medium (Default)"
if (location_risk == "Medium") location_risk <- "Medium (Default)"
if (type_risk == "Default") type_risk <- "Medium"
row_no <- which(safety_conseq_factor_sg_tf_oh$
`Safety Consequence Factor - Switchgear, Transformers & Overhead Lines...2` ==
location_risk)
col_no <- grep(type_risk, colnames(safety_conseq_factor_sg_tf_oh))
safety_consequence_factor <- safety_conseq_factor_sg_tf_oh[row_no, col_no]
# Safety consequence of failure -------------------------------------------
safety_cof <- safety_consequence_factor * scost
return(safety_cof)
}
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