When applying for the alteration inspection of Category Ι pressure vessels, the Manufacturer shall fill the Application for Alteration Inspection of Category Ι pressure vessels (Annex 43) and submit it the documents as shown below.1. Qualification certificate of the type inspection of the manufacturing equipment.2. 2 copies of specification of the Category Ι pressure vessel3. Drawings of the altered parts.4. Detailed structure drawing and strength calculation sheet, each 2 copies. However, this may be ignored if the inspecting organization deems it unnecessary.5. Aforesaid certificates for qualification of inspections or their photocopies.Stipulations of Paragraph 3 of Article 102 and Article 103 shall apply to the inspection.