Section 11 General regulations governing the storage of hazardous chemicals and waste
The storage of hazardous chemicals and waste must comply with the following general regulations:
Liquid chemicals and waste must be stored in a manner preventing the chemicals and waste from seeping into the environment if an accident were to occur. This means that liquid chemicals must be stored in double-walled tanks, tanks placed in separate protective bunds, separate storage areas designed and built for the storage of chemicals and waste or some other storage area that prevents the chemicals from entering the environment.
The protective bund or storage area must be leak-proof, it must be able to withstand the chemicals or waste contained in it and it must have a volume equivalent at least to the largest container stored in the protective bund. Rainwater must be prevented from entering the bund.
When stored outside, liquid chemicals and waste must be placed on leak-proof and load-bearing platforms. Outside storage areas for liquid chemicals and waste must be fenced and locked or unauthorised access must be prevented in other ways.
Processing and storage areas must be equipped with absorbent material and any other necessary equipment to collect leaks.
In flood risk areas, the storage of chemicals and waste must be organised so that the chemicals and waste cannot be spread into the environment in the event of floods.
The regulations specified above do not apply to the storage of minor quantities of chemicals and waste in households.
The handling of hazardous waste is also subject to what has been regulated in the waste management regulations of the Helsinki Metropolitan Area and Kirkkonummi.
Permanent refuelling stations for fuels and other chemicals must be placed on leak-proof, load-bearing platforms that can withstand chemicals. The fuel tanks must be placed at an elevation of at least 100 mm from the surface of the platform. In addition, the refuelling station must be constructed so that the chemicals cannot enter the soil, water bodies or the sewer system in the event of an accident.
Transportable fuel tanks must be placed on leak-proof platforms unless the structure of the tank incorporates a reservoir, double bottom or double wall or the tank is located in a covered protective bund. The tank must be placed so that the fuel cannot seep into the sewer system or water bodies in the event of an accident.
Refuelling stations must be equipped with absorbent material and equipment for the collection and storage of any leaks.
These regulations do not apply to refuelling stations on boat station piers or refuelling stations for heating oil containers used in properties.
Tanks used for the storage of fuel and other chemicals must be in good condition and equipped with at least the following:
- type plate - anti-syphon device - air pipe - lockable filler opening - overfill protector.
The refuelling valve and feed pump of the tank must be locked outside working hours and at other times as well, if necessary, to prevent unauthorised use.
The tank possessor or owner must have underground oil, fuel and other chemical containers in use and located outside important groundwater areas inspected for first time 15 years after their commissioning, the second time 10 years after the first inspection and the third time and onwards 5 years after the last inspection, unless more frequent inspections are necessary due to the condition classification of the container. An inspection record must be drafted of the inspection and it must be stored and presented to the City of Helsinki’s environmental protection authority upon request. Inspections may only be carried out by an inspector deemed qualified by the Finnish Safety and Chemicals Agency (Tukes).
Any accidents occurring in connection with hazardous waste or chemicals must be reported to the City of Helsinki’s environmental protection authority without delay.
Section 12 Additional regulations governing the storage of hazardous chemicals and waste in important groundwater areas
In addition to what has been specified in section 11, the storage of hazardous chemicals and waste in tanks in important groundwater areas must comply with the following regulations:
Fixed oil, fuel and other chemical storage tanks located outside buildings must be double-walled. Tanks must be equipped with an alarm system for any leaks between the walls.
The tank possessor or owner must have inspected over ground oil, fuel and other chemical containers in use for first time 10 years after their commissioning, the second time 5 years after the first inspection and the third time and onwards 5 years after the last inspection, unless more frequent inspections are necessary due to the condition classification of the container. The tank inspection record must be stored, and a copy must be sent to the City of Helsinki’s environmental protection authority within 14 days of the inspection. Inspections may only be carried out by an inspector deemed qualified by the Finnish Safety and Chemicals Agency (Tukes).
In addition to the fuel in the fuel tanks of machinery, a maximum of 2,000 litres of fuel per contractor may be stored on work sites in separate containers at any one time.
Acceptable containers include:
- tanks equipped with fixed protective bunds - single-walled tanks placed in covered bunds corresponding to the size of the tank - type-approved and periodically inspected IBC containers placed in protective bunds.
The soil structure of the refuelling area must be leak-proof and constructed from a material that is impermeable to the fuel being processed. The leak-proof area must cover an area expanding at least one metre from the filler opening and refuelling device.
It is prohibited to store any other chemicals and waste posing a groundwater pollution risk in the work site.