EN 12285-3:2019

Workshop fabricated steel tanks - Part 3: Horizontal cylindrical single skin and double skin tanks for the underground storage of flammable and nonflammable water polluting liquids for heating and cooling of buildings EN 12285-3:2019

Publication date:   Sep 19, 2019

General information

90.20 Standard under periodical review   Jul 15, 2024


CEN/TC 265 Metallic tanks for the storage of liquids

European Norm

13.300   Protection against dangerous goods | 23.020.10   Stationary containers and tanks



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This document specifies the product characteristics and test/assessment methods for workshop fabricated cylindrical, horizontal steel tanks, single (type S) and double skin (type D) intended to be used for the underground storage of water polluting liquids (both flammable and non-flammable), specifically used for storage and/or supply of fuel for building heating/cooling systems, and of hot or cold water not intended for human consumption at normal ambient temperature conditions (−20 °C to +50 °C) within the following limits:
- from 800 mm up to 3000 mm nominal diameter and;
- up to a maximum overall length of 6 times the nominal diameter;
- for liquids with a maximum density of up to 1,1 kg/l and;
- with an operating pressure (Po) of maximum 50 kPa (0,5 bar(g)) and minimum – 5 kPa (–50 mbar(g)) and;
- for double skin tanks with a vacuum leak detection system where the kinematic viscosity does not exceed 5 × 10−3 m2/s.
Two tank types are distinguished:
- Type S: Single skin;
- Type D: Double skin.
Tanks designed to this document allow for an earth cover of up to 1,5 m. If there are imposed traffic loads or a greater earth cover, calculation is required.
This document is not applicable to tanks installed in industrial processes or in petrol stations, nor to loads and special measures necessary in areas subject to risk of earthquakes and/or to flooding.

Related legislation

Legislation related to this standard


Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec

Life cycle


EN 12285-1:2003


EN 12285-3:2019
90.20 Standard under periodical review
Jul 15, 2024