What is an ADR tank?

Tank types and tank code

The ADR distinguishes several types: fixed tanks (tank-vehicles), demountable tanks, tank-containers, tank swap bodies, portable tanks and MEGCs for gases. Each one is assigned a tank code (ADR 4.3.4): an alphanumeric code that defines the type of tank, the calculation pressure, the openings and the safety devices, and that determines which goods it may carry.

Approval and periodic inspections

Construction, type approval, testing and marking are governed by chapter 6.8 of the ADR. The shell undergoes an initial inspection and then periodic inspections: fixed and demountable tanks every 6 years (with an intermediate inspection at 3); tank-containers every 5 years (intermediate at 2.5). In addition, the vehicle needs its ADR certificate of approval, which is renewed at the annual technical inspection and is valid for no more than one year.

Giormo tracks the expiry dates of every tank and vehicle — periodic test, roadworthiness test, ADR certificate — and alerts you before they expire. See how.

For information only; this is not legal advice. For the binding text, see the official sources.

Official sources

ADR 2025 — tanks (chapters 4.3 and 6.8), Spanish edition in the BOE, BOE-A-2025-77. www.boe.es
UNECE — ADR 2025 files by part. unece.org

Frequently asked questions

What is the tank code?

It is an alphanumeric code defined by the ADR that indicates the type of tank, its calculation pressure, openings and safety devices. It determines which dangerous goods that tank may carry.

How often is an ADR tank inspected?

Fixed and demountable tanks have a periodic inspection every 6 years, with an intermediate one at 3; tank-containers every 5 years, with an intermediate one at 2.5. The vehicle also renews its ADR certificate of approval at the annual technical inspection.

Every ADR tank, always compliant

Giormo keeps watch over every ADR tank: tank code, approval, compatible product and expiry dates for the roadworthiness test and periodic tests, all linked to the order. An ERP/TMS for tanker transport, in production. Tell us how you operate.