The inspecting organization shall sign on the original qualification certificate of Category Ι pressure vessels qualified in the periodic inspection and indicate the period of service (1 years at the most), but for paragraph 2 of Article 108, the period may be 2 years.The Inspector shall fill the Report for the Result of Periodic Inspection for Category Ι pressure vessels (Annex 46) after the completion of the periodic inspection and notify the employer of the results.