When completing the installation of derrick cranes or altering its position, employer shall fill the Application for Completion Inspection of Derrick cranes (Annex 3) and submit it along with the documents as shown below at the local inspecting organization to apply for the completion inspection:1. Qualification certification for the type inspection of manufacturing facilities. The imported facilities shall be evidenced by the quality control related documents.2. Area drawings and fundamental summary of installation location.3. Specification of derrick cranes (Annex 4)4. Setting means of fixing.5. Criteria for Strengthen Calculation and Assembly Sketch.