Applicability: shipbuilders and steel manufacturers. 

Amendments are being made to Lloyd’s Register’s Rules to include the stipulations of two newly published Unified Requirements from the International Association of Classification Societies (IACS) regarding non-destructive examination (NDE).

The following come into force on 1 July 2021:

1. UR W33 - Non-destructive testing of ship hull steel welds
2. UR W34 - Advanced non-destructive testing of materials and welds

The impact on LR’s Rules (mainly contained within Lloyd’s Register’s Rules for the Manufacture, Testing and Certification of Materials) are summarised as follows:

(a)  minor changes to existing NDE acceptance criteria for conventional NDE methods

(b)  new detailed requirements for the following advanced NDE methods: 
•    Digital Radiography
•    PAUT (Phased Array Ultrasonic Testing)
•    TOFD (Time of Flight Diffraction)

(c) acceptance criteria for the application of the advanced NDE methods

(d) The application of these advanced methods requires qualification to determine the suitability and the effectiveness of the method for use on LR Class vessels. Detailed requirements for qualification are included within the Rules update.

Further information

For more details, please contact your local LR office or