Leak detection systems for double-skin tanks or double-skin pipes
A leak detection system is used to monitor the tightness of both the primary and the secondary skin of a double-skin tank or pipe within the meaning of water legislation. For this purpose, any deviation from the initial working pressure of the interstitial space is detected (vacuum or positive pressure). If the specified tolerance range is exceeded, a signal is triggered. The interstitial space can also be monitored using a liquid as leak detection medium instead of air/gas.
Regulatory framework
For leak detection systems not covered by the harmonised part of DIN EN 13160, the Administrative Provisions – Technical Building Rules of the federal states (VV TB) apply. Compare the common model: MVV TB, C 2.15.24 and C 2.15.25.
DIBt grants national technical approvals (abZ) for leak detection systems that significantly deviate from these Technical Building Rules, 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
To prepare an abZ/aBG for your construction product, we need an application from you. We recommend that you contact us prior to doing so. Feel free to send us your enquiry informally via email to dibt(at)dibt(.)de or to the competent technical contact listed in the top right.
For a first assessment, please send us the following information:
- Description of the construction product and its intended field of use
- e.g. material, configuration, number of sizes, variants, dimensions
- e.g. use in walls, ceilings, interior construction, building services
- Description of the construction technique and its field of application
- e.g. design of walls, ceilings, elements, etc., and interaction of components
- e.g. application in foundation engineering, reinforced concrete construction, building insulation; as load-bearing or non-load-bearing component; under static and quasi-static loading; fire exposure; other environmental exposures
- Information regarding impact on regulatory concerns
- in particular structural integrity, fire protection, health and environment protection, sound insulation as well as thermal performance
- Explanation of need for an abZ/aBG
- Do you significantly deviate from the Technical Building Rules?
- Or do neither Technical Building Rules nor generally recognised technical rules exist?
- Contact details
- preferably email address and/or telephone number, as well as name, organisation/company, and postal address
We will then contact you to clarify the next steps.
If you already hold a DIBt approval and/or construction technique permit and wish to apply for an amendment, supplement, or renewal, please use the form provided below.
- pdf-Datei Application for amendment / supplementation / renewal of a national technical approval and/or construction technique permit (4 pages ) Last updated: 10 April 2024; Application form
| Subject concerned | Applicant | Decision no. |
Validity
from / to |
|---|---|---|---|
| Leckanzeiger mit der Bezeichnung "KÜR 5" ohne Unterdruckerzeuger für die Überwachungsräume doppelwandiger Behälter | Krampitz Tanksystem GmbH Lüneburger Straße 7 21368 Dahlenburg | Z-65.22-158 |
Z:
08.09.2025 G: 08.09.2030 |
| Leckanzeiger mit der Bezeichnung "RW 1", "RW 2", "RW 3", "RW 4", "RW 5", "RW 6" ohne Unterdruckerzeuger für Überwachungsräume doppelwandiger Behälter | Seppeler Rietbergwerke GmbH & Co. KG Bahnhofstraße 55 33397 Rietberg | Z-65.22-262 |
Z:
18.09.2025 G: 31.10.2030 |
| Leckanzeiger nach dem Unterdrucksystem ohne integrierten Unterdruckerzeuger, Typ "VLM 150-375" | SGB GmbH Hofstraße 10 57076 Siegen | Z-65.22-418 |
Z:
23.01.2024 G: 23.02.2029 |
| Leckanzeiger auf Unterdruckbasis ohne eigenen Unterdruckerzeuger für Überwachungsräume doppelwandiger Behälter, Typ MLB I und Typ MLB II | MLB Lager- und Behältertechnik GmbH Im Hanloh 2 59368 Werne-Horst | Z-65.22-493 |
Z:
10.12.2021 G: 08.01.2027 |
| Leckanzeiger nach dem Flüssigkeitssystem der Typen LAS 24 (E, EK), LAS 72 (E) und LAS 230 | Afriso-Euro-Index GmbH Lindenstraße 20 74363 Güglingen | Z-65.24-381 |
Z:
16.07.2024 G: 03.08.2029 |