1. Before the expiry of the accreditation certificate, the national accreditation body shall carry out a reassessment of the verifier to which the national accreditation body has issued an accreditation certificate to determine whether the validity of that accreditation certificate may be extended.

2. The national accreditation body shall prepare its plan for the reassessment of each verifier in a manner that allows representative samples of the scope of accreditation to be assessed. In planning and carrying out the reassessment, the national accreditation body shall meet the requirements laid down in the harmonised standard referred to in Annex III.