I am aware that NFPA 58 applies to LPG installations; however, with the “dumbing-down” of many RAGAGEPs, I am always looking for the BEST DESIGN for my process safety functions. I do wish the IFC would define/quantify where remote activation stations must be, as they did decades ago.
But for now, I use NFPA 58, which states:
6.13.4 Remote Shutdown Station.
6.13.4.1 At least one remote shutdown station for internal valves in liquid service shall be installed in accordance with the following:
(1) Not less than 25 ft (7.6 m) or more than 100 ft (30 m) from the liquid transfer point
(2) Not less than 25 ft (7.6 m) from the internal valves that are being controlled
(3) Along a path of egress from the liquid transfer point
I also recommend to my clients that these devices be provided in at least two (2) travel paths in opposite directions.