What procedures are required to change the purpose of use for a pressure vessel?
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There are two liquefied petroleum gas cylinders in the unit; one of them has been modified to store nitrogen, and the operating pressure has also been reduced. What procedures are needed to use it? Please let me know: dizzy:
Consult the regulatory authority for pressure vessels; generally, the opinion of the design department is required to proceed with the change procedures.
It’s best to consult the local boiler inspection agency
Take the container documentation, the registration forms (in triplicate, stamped with the company seal), and the design specifications from a design firm qualified to handle such tasks (for the reassignment of the container’s purpose) to the Quality Supervision Bureau to re-register it, while simultaneously canceling the original registration for the container (bring the cancellation documents as well to avoid having to make repeated trips).
This post was last edited by Buddha and Orchid on 2019-3-25 at 11:28. Changing the medium and parameters used falls under the category of \"modification\" of pressure vessels. First, a modification plan must be prepared by a unit qualified to carry out such modifications, and this plan requires written approval from the original design unit or a design unit with the appropriate qualifications. Second, before starting the renovation work, it is necessary to inform the market supervision administration where the equipment is located. Third, if the approved modification plan specifies that the equipment still requires a pressure resistance test, then after being informed of this, the entity carrying out the modification must also submit an application to a special equipment inspection agency for supervision and inspection of the modification. The general process is as above. Based on what you’ve described, for this device, it’s sufficient for the design team to conduct a verification of the design; construction is usually not necessary.
Mm! The procedure is like this, but having to deal with supervision and inspection is very troublesome. If the user, to avoid hassle, conducts tests using the original parameters, there will be no problem using nitrogen in practice; however, if any issues arise, it will be the responsibility of the user.