(1) The owner of a lifting appliance shall ensure that it is not used unless it has been thoroughly examined by a competent examiner at least once in the preceding 12 months, and a certificate in the approved form in which the competent examiner has made a statement to the effect that it is in safe working order has been obtained.
(2) The owner of a lifting appliance other than a crane, crab or winch shall ensure that it is not used unless it has been tested and thoroughly examined by a competent examiner in the manner prescribed in the First Schedule, and a certificate in the approved form in which the competent examiner has made a statement to the effect that it is in safe working order has been obtained.
(3) The owner of any crane, crab or winch shall ensure that it is not used unless during the preceding 4 years it has been tested and thoroughly examined by a competent examiner in the manner prescribed in the First Schedule, and a certificate in the approved form in which the competent examiner has made a statement to the effect that it is in safe working order has been obtained.
(4) If any lifting appliance of the description mentioned in paragraph (1) or (2) has been thoroughly examined or tested and thoroughly examined, as the case may be, in accordance with those paragraphs but has since undergone substantial repair, re-erection, failure, overturning or collapse, the owner of the lifting appliance shall ensure that it is not used unless it has been further tested and thoroughly examined by a competent examiner, and there has been obtained from him in respect of the test and thorough examination a certificate in the approved form in which he has made a statement to the effect that it is in safe working order.
(5) If any crane, crab or winch has been tested and thoroughly examined but has since undergone substantial repair, re-erection, failure, overturning or collapse, the owner of the crane, crab or winch shall ensure that it is not used unless it has been further tested and thoroughly examined by a competent examiner, and there has been obtained from him in respect of the test and thorough examination a certificate in the approved form in which he has made a statement to the effect that it is in safe working order.