TWI Certification Ltd
International Certification Services in Welding, Inspection and NDT

TWI Certification Ltd is a TWI Group company formed in 1993 and accredited by the United Kingdom Accreditation Service on behalf of the UK Government's Department for Business Innovation & Skills in accordance with ISO/IEC 17024 and EN 45011.

The body with overall responsibility for the activities of TWI Certification Ltd is the Certification Management Board.

CSWIP - Certification Scheme for Personnel
A mark of competence for a wide range of people engaged in welding and/or inspection related jobs in building, operating, inspecting and repairing high integrity welded plant.
 
 
CSWTO - Certification Scheme for Welder Training Organisations
This scheme identifies welder training organisations which can demonstrate that they operate according to established best practice.
 
 
NWTS - National Welder Training Standard
This scheme provides a means of integrating all the various UK national training programmes and routes to achieving competence as a welder into a single system that everybody can understand. It is a four level system and so far only level 1 for 'welding operatives' has been completed.
 
 
 
WFCS - Welding Fabricator Certification Scheme
This scheme is designed to allow welding fabricators to demonstrate compliance with ISO3834 Quality Requirements for Welding. The scheme also satisfies EWF/IIW criteria for ISO3834 certification.