Office for Nuclear Regulation

Evaluation of Weld Development Qualification Dounreay Fuel Sub-assembly Project Shipment 6 Material 

Executive summary

Purpose of Intervention

This inspection was carried out to evaluate Langfields Ltd’s quality arrangements for development of welding procedures for the Un-irradiated Fuel Containers (UFC) closure weld, with the UFC used in the transport of radioactive material from Dounreay to the Sellafield licensed nuclear site.

Intervention Carried Out by ONR

I evaluated Langfields Ltd’s management system to confirm adequate quality arrangements were in place in respect of development of UFC closure weld using both manual and orbital welding methods.

Explanation of Judgement if Safety System Not Judged to be Adequate

N/A

Key Findings, Inspector’s Opinions and Reasons for Judgements Made

This inspection confirmed that Langfields Ltd has an effective management system in place based upon the evidence showing how Welding Procedure Specifications (WPS) are developed and approved and in their Procedure Qualification Records (QPR).

Conclusion of Intervention

The Langfields’ arrangements for developing manual and orbital welding are suitable for demonstrating weld quality control.