Article 22

     1. Every  lifting appliance and every item of loose gear shall be
tested in accordance with national laws or regulations by a  competent
person  before  being  put  into  use for the first time and after any
substantial alteration or repair to any  part  liable  to  affect  its
safety.
     2. Lifting appliances forming part of a ship`s equipment shall be
retested at least once in every five years.
     3. Shore-based lifting appliances shall be retested at such times
as prescribed by the competent authority.
     4. Upon the completion of every test of a  lifting  appliance  or
item  of  loose gear carried out in accordance with this Article,  the
appliance or gear shall be thoroughly examined and  certified  by  the
person carrying out the test.