The Fire Code is the "rule book" for many storage tanks containing flammable or combustible liquids in Alberta. The most current edition was published in 2019. This regulation lists a number of tank uses which are not included in its scope. Among the exclusions are tanks used exclusively for agricultural purposes and tanks used in the "upstream" oil or natural gas industries for exploration, production or transmission at AER regulated facilities. Part 4 of the Code contains the specific requirements for the storage of flammable and combustible liquids. Readers can acquire a copy of the Alberta Fire Code (2019) from Codes Canada.
National Research Council
NRC sells all construction Codes (including the Alberta and the National Fire Code) so if it's the Alberta Fire Code you want, scroll down to the section on Provincial Codes. The link to the NRC website and the order form information is here.