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Construction products detail

Leak detection linings for tanks and pipes

Leak detection linings serve to create a second skin within the meaning of water legislation in single-skin tanks or containers. For this purpose, an internal lining is inserted into a single-skin tank, where together with a permeable spacer material, it forms a second skin and an interstitial space. Leak detection linings are commonly made of thermoplastic membranes made of glass-fibre reinforced plastic or steel, which in most cases are pre-installed in the tank. The floors of large flat-bottom tank structures are mainly fitted with steel sealings. The interstitial space is realised here through an intermediate layer made of wire mesh or diamond sheets.

Regulatory framework

DIBt grants national technical approvals (abZ) for leak detection linings not covered by the harmonised part of DIN EN 13160, usually in combination with a general construction technique permit (aBG) for the application.

The national technical approvals/general construction technique permits for these products and construction techniques confirm that both the construction and water law requirements have been met. The products and construction techniques are thus deemed to be suitable in accordance with Section 63 of the Water Resources Act (WHG).

National procedure

A national technical approval (abZ) and/or oder general construction technique permit (aBG) is granted upon application (see Model Building Code (MBO), Sections 16a(2) and18(2) and (4)). This also applies to amendments and supplements to, or renewals of existing approvals and/or construction technique permits.

No formal requirements apply. The following information is needed: name and address of the applicant, description of the product and/or construction technique and its field of use or application, type of decision required (new decision, amendment or supplement to, or renewal of, an existing decision).

Please feel free to use the template below.