Section 4(3)(ii) in The Static and Mobile Pressure Vessels (Unfired) Rules, 2016
(ii)The Chief Controller on receipt of documents mentioned in clause (i) shall get the fabrication shop inspected by a Controller for assessment of the capability of fabrication of pressure vessels, vapourisers or fittings and shall either approve the shop or reject the application depending on the assessment report. The approval shall remain valid initially for a period of one year. Subsequently based on the satisfactory performance report, the approval may be periodically renewed for five years. The fee for renewal shall be as specified in clause B of Schedule I;