Minimum safety distances

[Hydrocarbon]

Also - see API RP 752 Management of Hazards Associated with Location of Process Plant, and API RP 753 Management of Hazards Associated with Location of Process Plant Portable Buildings

[Engineer 20]

Hello All
can anyone helpe me to the minimum safety distance requirements for Electrical sub (144 kV or 250 kV) and other related facilities from the gas plant or oil storage facilities
I'd also very much appreciate if you'd let me know which is the applicable code/ standard for this.
Thanks