To apply for the structure inspection of the category Ι pressure vessel , the Manufacturer shall fill up and submit an Application Form(Annex 35) for Structure Inspection of pressure vessels together with the following documents :1. Two(2) copies of the specification(Annex 44) of the category Ι pressure vessel.2. Two(2) copies each of the detailed structure drawings and the strength calculation sheets.3. One(1) copy of the welding list with a stamp indicating the qualification status of the inspection of those manufactured by using welding method shall be attached.4. One (1) copy of the certificate indicating qualification status of the type inspection of those manufactured by using riveting method shall be attached.In case both the welding inspection and the structure inspection are carried out by the same Inspecting Organization, the documental requirements stated in above Items 2 and 3 may be exempted..The coverage of the structure inspection mentioned in the preceding Paragraph 1shall includes inspection of the construction methods, the material thickness, the structure, the dimensions, the maximum operating pressure, the strength calculation review, and the arrangement of the manhole, the cleaning hole, and the safety devices, as well as the pressure test, and the materials used for the shell body, the end plate, the pipe sheet, the smoke tube, the fire chamber and the fire tube and etc., and other inspections as required.