I must protect a structure where there are almost 20,000 liters of oil. This product is inside metal tanks (200 liters each) and plastic containers (5.000 litres each).
I am using NFPA 11 2016 edition, but I cannot identify the most appropriate risk for this case. I think it could be treated with the Pto. 5.7 Diked Areas - Outdoors, but in reality it is not outdoors.