Section 2: Construction

2. Construction (1) The storage facility shall have an even, impenetrable surface to facilitate transport and handling operations by car, fork-lift, crane or other auxiliary equipment for instance, pumps or compressed air in connection with closed systems. (2) The drainage system shall allow any precipitation to drain off a closed sewer-system enabling separation of clean water and spills or dissolved or emulated chemicals for later treatment, collection, neutralisation or separation. (3) The safety conditions set out hereunder shall be satisfied— (a) impenetrable, easy to clean surface, not reacting with spilled chemicals such as solvents or oxygen on a bituminous material; (b) safe and fixed foundations based on the total weight of containers and the content for which they are intended; (c) secondary containment in case of loss of primary containment in the form of barriers, reservoirs or tank-pits with a volume calculated in accordance with the possibility of an unwanted event and its consequences; (d) supports or racks to facilitate the lifting and internal transport of goods; (e) electric installations and equipment in accordance with regulatory requirements depending on the risk of presence of flammable dusts, gases or vapours combining explosion zones and the choice of sparkprotected equipment to avoid ignition; (f) conductive installations preventing the formation of electrostatic charges and lightning conductors and installation of swan’s neck outlets from venting-tubes and flame-arresters; (g) safety valves, bursting devices or blow-down system, explosion relief devices if necessary leading blow-out into safe direction; (h) fencing and gates provided with locks. (4) Dangerous chemicals shall always be stored in a place not open to the public. (5) Very toxic and toxic chemicals shall always be stored separately and be kept locked up. (6) If needed, the store or compartment shall also have a solid roof.