After the vessels for high-pressure gases have been qualified by the periodic inspection in compliance with the requirements as stipulated in the preceding Article 155, the original qualification certificate of said vessels shall be signed and indicated thereon an extended operation duration with five(5) years as the maximum by the Inspecting Organization. Nevertheless, an new qualification certificate shall be re-issued for those tanked type vessels which are fixed on the vehicles.Having completed the periodic inspection of the vessels for high pressure gases as per the preceding Paragraph 1, the Inspector shall fill up a periodic inspection report(Annex 46) to file the results of said periodic inspection, and notify the same to the Employer.