When altering the master arm, crane boom, cable, foundation or other structural parts of the derrick crane, the employer shall fill up the Application Form for Alteration Inspection of Derrick cranes (Annex 12) and submit the same along with the drawings of the components to be altered to the inspecting organization to apply for the alteration inspection.The inspecting organization shall remark the date and results of the inspection as well as the altered components on the original qualification certificate for derrick cranes qualified in the alteration inspection.The requirements stipulated in Articles 34 and 35 shall apply mutatis mutandis to the alteration inspection stated in Paragraph 1. .