A certificate of competency is subject to any conditions stated in the certificate.
13. Endorsements on certificates of competency
(2) A certificate of competency must, by a written description, code or symbol, contain an endorsement for each kind of scheduled work the holder is authorised to do.
(5) A code or symbol authorises the holder to do only the kind of scheduled work to which the code or symbol related on the day the certificate was issued, despite any change in the meaning of the code or symbol after that day.
14. Duration of certificate of competency
(1) A certificate of competency is in force until surrendered or cancelled.
(2) However, a certificate is not in force when it is suspended.