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Renewal, Prolongation and Recertification

The recertification process outlined here applies to the certificate type listed in the box below.  All certifications are valid for 4 years subject to successful completion of the requirements listed below each year.

Plastic Welders; Installers and Supervisors: FRP Plate Strengthening of Concrete Structures, Composite Patch Repair for Marine and Civil Structures

Year one renewal

TWI Certification Ltd will send a renewal reminder to the sponsoring company seeking confirmation of the certificate holder's:

  • Current employment
  • Engagement, with reasonable continuity, in activities covered by the certificate for the previous 12 months
  • No interruption in their employment for longer than 6 months

Once the above is received by TWI Certification Ltd, a new certificate will be issued for the following year.


Year two prolongation

TWI Certification Ltd will send a renewal reminder to the sponsoring company requesting the following:

  • Completion of the application form (sent with the reminder)
  • Evidence of work quality, e.g. copies of independent third party testing or, a signed letter from a customer advising that the work carried out by the certificate holder in the 12 months prior to the two-year certificate expiry date in the category/categories covered by the certificate, was of acceptable quality

Once received, the submission is assessed by TWI Certification Ltd against the prolongation requirements. If successful, a new certificate for the following year will be issued.


Year three renewal

The same process as the year one renewal applies. TWI Certification Ltd will send a renewal reminder to the sponsoring company seeking confirmation of the certificate holder's:

  • Current employment
  • Engagement, with reasonable continuity, In welding activities for the previous 12 months
  • No interruption in their employment for longer than 6 months

Once the above is received by TWI Certification Ltd, a new certificate will be issued for the following year.


Year four recertification

All certificate holders are required to sit an examination at the 4-year point. 

  • TWI Certification Ltd will send a renewal reminder to the sponsoring company
  • Employers must contact TWI Examinations to arrange the examination(s)

Upon successful completion of the exam(s), a notification will be sent to TWI Certification Ltd, who, upon receipt of this notification, will issue a certificate.

Please note certificates can take several weeks to be issued from receipt of the initial notification by the examination body.