ÖNORM EN 12285-2

This document specifies the requirements for metallic shop fabricated cylindrical, horizontal steel tanks, single and double skin for the aboveground storage of water polluting liquids (both flammable and non-flammable) within the following limits: from 800 mm up to 3 000 mm nominal diameter and, up to a maximum overall length of 6 times the nominal diameter and, for liquids with a maximum density of up to 1,9 kg/l and, with an operating pressure (Po) of maximum 1,5 bar (abs.) and, where double skin tanks with a vacuum leak detection system are used the cinematic viscosity of the stored media shall not exceed 5 × 10-3 m2/s. This document is applicable for normal ambient temperature conditions (- 20 °C to + 50 °C). Where temperatures are outside this range, additional requirements need to be taken into account. This document is not applicable for the storage of liquids having dangerous good classes listed in Table 1 because of the special dangers involved.