Company LogoCompany Logo

ADR tanker testing

Periodic, intermediate, and exceptional inspections on ADR 6.8 tanks.

We are AIB appointed by the VCA to carry out periodic, intermediate, and exceptional inspections on any ADR 6.8 general purpose and bitumen tanks.

We offer a fully mobile service meaning we can either complete inspection and testing on site, or at one of your nominated workshops.

We have developed unique methods of testing some components in situ to avoid the need for removal for bench testing.

Contact our experts

Features and outputs

  • Full fleet management service for any size of operator.
  • Our experienced inspectors cover all locations in the UK.
  • We can inspect meters.
  • We can test fire extinguishers as required annually.

Added value

Management information

We can hold our clients’ fleet details on a secure database, enabling us to take responsibility for ensuring that all tests are carried out on schedule. Clients can be given password-protected database access to view their fleet information, including test results and certificates.


We meet stringent UKAS standards (0311 Type C Inspection Body Accredited to ISO/IEC 17020:2012).


We are accredited to perform vapour tightness testing, intermediate and periodic inspection, and testing.


Our inspectors are accredited by the Freight Transport Association (FTA) to issue Safe Loading Passes (SLP) for all types of fuel road tankers.


We are accredited to use gas for six yearly testing in the UK.

Two yearly vapour tightness testing (VTT)

We can carry out and certify VTT to comply with current legislation for Safe Loading Pass, necessary every two years.

Three yearly intermediate tanker testing

We provide intermediate tank testing using gas to ensure the integrity of the barrel from both external and inter-compartmental leaks. Current legislation allows this to be carried out at up to three yearly intervals; however it is common industry practice to have this test carried out at two yearly intervals in line with the vapour tightness test.

Six yearly periodic testing using gas or water

Periodic hydraulic tank testing using gas/water ensures the integrity of the barrel from both external and inter-compartmental leaks. Current legislation dictates that all tanks carrying hazardous goods are subject to this testing procedure.

Benefits of gas testing six yearly periodic

Unlike traditional water testing; using gas eliminates the risk of water cross contamination and potential biofuel fungal issues, thereby reducing your business costs and avoiding unnecessary wastage of water and disposal costs. We can carry out gas testing at client’s premises, saving on fuel costs and reducing tanker off road time.

Safe Loading Pass (SLP) Inspection Service

All our inspectors are accredited by the FTA to issue SLP’s for all types of fuel road tankers. Managed by the FTA, the Safe Loading Pass Scheme (SLPS) identifies the vehicles and trailers that meet the safety standards required for admittance to fuel and gas loading terminals. The SLPS has been extended to cover Liquefied Petroleum Gases (LPG) and any vehicle wishing to load LPG at participating terminals must be inspected under the SLPS when their existing pass expires.

The SLPS is recognised by members of the UK Petroleum Industries Association (UKPIA) and the Tank Storage Association (TSA).

Keep your business compliant and protect the environment while reducing the risk of operational downtime

Find out how Adler and Allan reduce your risk and support you on your journey to Net-Zero through the management and maintenance of assets.

Contact our experts