1. In addition to the requirements of Article 22, every lifting appliance and
every item of loose gear shall be periodically thoroughly examined
and certified by a competent person Such examinations shall take place
at least once in every 12 months.
2. For the purpose of paragraph 4 of Article 22 and of paragraph 1 of this Article,
a thorough examination means a detailed visual examination by a competent
person, supplemented if necessary by other suitable means or measures
in order to arrive at a reliable conclusion as to the safety of the
appliance or item of loose gear examined.