We have almost 20 DI pumps installed outside (-30C/-40C in winter) and pumping RUG, diesel, etc. Never had any problems during normal operations. Problems could arise when you start pumping a hot media without insulation. I would not use a cast iron pump.
Usually tight inventory control is the first head up.
Periodic double floor (if applicable) sampling/shell visual inspection.
Plus the usual 5 years external/10 years internal inspection by API accredited inspectors.
