The Nelson complexity index (NCI) is a measure to compare the secondary conversion capacity of a petroleum refinery with the primary distillation capacity.[1] The index provides an easy metric for quantifying and ranking the complexity of various refineries and units.[2] To calculate the index, it is necessary to use complexity factors, which compare the cost of upgrading units to the cost of crude distillation unit.[3]
- ^ "Nelson Complexity Index" (PDF). pakpas.org. Retrieved 3 November 2016.
- ^ "Nelson Index". investopedia.com. Investopedia. Retrieved 3 November 2016.
- ^ David C. Johnston; Daniel Johnston (2006). Introduction to Oil Company Financial Analysis. PennWell Books. p. 199. ISBN 9781593700447. Retrieved 3 November 2016.