How to understand the design license for the design of fixed-pressure vessels as specified in TSG 07-2019?
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According to TSG07-2019 and Document No. 32, to obtain permission for designing pressure vessels, it is necessary to have the qualification required for designing fixed pressure vessels; are there different scopes for such design permissions? For example, organizations that were previously only involved in the design of D1D2 vessels also need to prepare a set of documents related to category three vessels in accordance with TSG07-2019 P28. If they still lack experience in designing category three pressure vessels when applying for a renewal of their certification, will they need to prepare design prototypes as required for obtaining the certification for the first time? ?
The original Class D pressure vessel design, under the new licensing rules, should provide at least one set of Class III pressure vessels.
What does it mean that the \"Rules for the Licensing and Management of Qualifications for Design Units of Pressure Vessels and Pressure Pipelines\" are repealed after the implementation of TSG 07-2019 \"Rules for the Licensing of Special Equipment Production and Filling Units\"? Does rule design only allow manufacturers to do it, so that design firms without manufacturing experience cannot design pressure vessels?
After reading the TSG 07-2019 \"Rules for Licensing Production and Filling Units of Special Equipment\" in its entirety, you will no longer have such questions. Article 1.1: The production of special equipment includes design, manufacturing, installation, modification, and repair. Appendix C1 specifies the conditions for licensing pressure vessel design; therefore, the \"Rules on Licensing and Management of Qualifications for Design Units of Pressure Vessels and Pressure Pipelines\" have been repealed. As a result, design work is no longer limited to manufacturing units only – design companies that do not have manufacturing facilities can also obtain licenses to design pressure vessels.
Production units no longer need to obtain a separate design qualification certificate
If the manufacturing unit also designs the pressure vessels it produces, it must meet the personnel requirements specified in clause C1.2 of this annex; in addition, the total number of full-time designers should be at least 5, including at least 2 persons who are qualified to approve designs. When a manufacturing unit carries out design work for pressure vessels, the preliminary design documents must cover the range of equipment types for which it holds a manufacturing license.