Information on special equipment related to public messages on the State Administration for Market Regulation
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Questions related to simple pressure vessels 01: Inspection of simple-type pressure vessels – Images. Question: Our company has three simple-type pressure vessels with a designed service life of 10 years. Their date of production is 2011, and they were put into use in 2018. Is this designed service life based on the date of production or the date of use? When special equipment that has exceeded its design lifespan still needs to be used and is subject to inspection, is it necessary to provide notification of installation? If such notification is required, the application documents must be signed and stamped by the installation unit. What should be done if it is not possible to contact the installation unit due to the long elapsed time? Answer: To determine whether a picture has exceeded its designed service life, the calculation should start from the actual date of commissioning, and the relevant requirements specified in Article 7.1.11 of the \"Safety Technical Inspection Regulations for Fixed Pressure Vessels\" (TSG 21-2016) and Article 2.14 of the \"Rules for the Use and Management of Special Equipment\" (TSG 08-2017) shall be applied. Department responding: Special Equipment Safety Supervision Bureau Date: 2022-11-08 02 Do the simple pressure vessel devices themselves, along with the safety valves and pressure gauges used in them, not require any inspection? Image Question: According to clause 7.1.11 of the \"Safety Technical Inspection Regulations for Fixed Pressure Vessels\" (TSG 21–2016), simple pressure vessels and those falling within the scope defined in clause 1.4 of these regulations do not require registration for use, nor do they need to undergo regular inspections during their designed service life. Furthermore, in accordance with Clause 1.6: Definition of the scope of pressure vessels, the pressure vessels to which these regulations apply include the vessel body itself, safety accessories, and instruments. Can it be summarized as follows: the main body of simple pressure vessels, their safety accessories, and instruments do not require regular inspections throughout their design service life? Answer: For images, please refer to Section 7.1.11 of the \"Safety Technical Inspection Regulations for Fixed Pressure Vessels\" (TSG 21‑2016). The calibration of pressure gauges shall be carried out in accordance with the requirements specified in relevant metrological standards, while safety valves should be verified in compliance with the \"Regulations on the Safety Technical Inspection of Safety Valves\" (TSG ZF001-2006). Department responding: Special Equipment Safety Supervision Bureau Date: 2022-09-28 03 Notice on the installation of simple pressure vessels Image Question: According to Article 7.1.11 of TSG 21-2016, simple pressure vessels do not require registration for use, nor do they need to undergo regular inspections during their designed service life. The pressure vessel installed by a certain entity meets the definition requirements for A2.3 simple pressure vessels, and its working medium is air and water vapor. There are two issues: First, is it necessary to submit an installation notification for simple pressure vessels? II. The other conditions are met; the actual medium used is water vapor, which is formed by the evaporation of ordinary water rather than medical distilled water. Can it be concluded that, since this does not meet requirement A2.3(6) which stipulates that the medium should be “air, vapor generated by the evaporation of medical distilled water, or a mixture of such gases”, it cannot be regarded as a simple pressure vessel? Is it necessary to carry out registration for its use and conduct regular inspections? Answer: For Image 1, simple pressure vessels do not require notification. 2. Pressure vessels that meet the conditions specified in A2.3 of the \"Safety Technical Inspection Regulations for Fixed Pressure Vessels\" (TSG 21-2016) are referred to as simple pressure vessels. Department responding: Special Equipment Safety Supervision Bureau Date: 2021-05-17
It was studied very seriously, but the misunderstandings were deep. 1. The date of commissioning can be considered as the date of manufacture; don’t try to understand domestic matters using foreign perspectives, as national conditions and situations vary ； 2. When reviewing technical specifications, one should not consider them in isolation but rather look at them as a whole, and calculations must be carried out in a strict manner ； 3. Don’t bother with simple pressure vessels; you can’t reap all the benefits by yourself.
The date of commissioning and the product’s date of manufacture are two different things; the product’s date of manufacture is not equal to the date it is commissioned!
Once you get stuck in that fixated mindset, it’s very difficult to get out
The application for a usage permit must be submitted 30 days before the device is used; therefore, the timeline should be based on the date when the permit is issued.
Although it is recommended to use it only after obtaining the certificate, you’ll see that the two technical specifications certainly don’t state such a thing.
It’s not a trivial issue – customers don’t start using the equipment right away; some have to wait several years before they can put it into use. How can the product’s date of manufacture be the same as the date it’s actually used?
If you don’t understand, learn more*; don’t just assume whatever comes to mind.
The General Administration has provided correct responses to all the above questions; those who posed the questions did not have a proper understanding of the regulations. Question 1: The regulations clearly state that \"no regular inspections are required during the design service life,\" which does not conflict with the date of manufacture ； Question 2: It’s nonsense on the part of the using unit – how can instruments and safety accessories be counted as part of the equipment itself? For the first question of Question 3, simple pressure vessels do not require registration for use nor regular inspections; therefore, there is no need to file an installation notification either. As for the second question, it’s nonsense on the part of the user unit – it’s clearly a vessel of the drum type, yet they insist on classifying it as a simple pressure vessel.