Storage Tank Systems for Petroleum Products and Allied Petroleum Products Regulations

16 The owner or operator of a storage tank system installed before the coming into force of these Regulations that has single-walled underground tanks must test those tanks using a tank precision leak detection test in accordance with section 21 within two years after the day on which these Regulations come into force and after that test they must

• (a) immediately

  • (i) use automatic tank gauging in accordance with section 18, or

  • (ii) use continuous in-tank leak detection in accordance with section 20; or

• (b) annually perform a tank precision leak detection test in accordance with section 21.