As of the 1st July 2014 it has become a legal requirement that all structural steel carries a CE mark and is delivered with accompanying certification.

European standard BS EN 1090-2 covers the technical requirements for steel structures and defines the NDT requirements based upon the execution class of the work that the fabricator has under taken.

Execution Class Type of work
EXC 1 Agricultural buildings
EXC 2 Housing and office blocks
EXC 3 Stadiums, concert halls, bridges
EXC 4 Power stations, chemical plants, high risk structures.

The execution class of the work the fabricator has undertaken will determine the quantity, method and acceptance levels of any non-destructive testing which needs to take place in order to meet the requirements of CE standards/ISO 1090-2.
Results will then be cross referred with the Acceptance and reject criteria of BS EN ISO 5817.