Do simple pressure vessels not require registration for use or periodic inspection?
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Do simple pressure vessels not require registration for use or periodic inspection? If that’s the case, what’s the point of talking about tolerance standards at all? Why bring it up? Users can manage and use them as they see fit. The regulatory requirements specify these simple pressure vessels, presumably in order to ease the management rules for such vessels Because according to the definition of a simple pressure vessel, its degree of hazard is indeed very low, with basically no danger at all; yet according to the regulations on pressure vessels, it still falls under the category of pressure vessels. Is that how it’s understood?
Your understanding is correct. Compared to other pressure vessels, simple pressure vessels pose a lower level of risk; therefore, the regulations specify that stricter requirements can be applied to them, and they do not need to undergo registration for use or regular inspections. However, it must still comply with relevant laws and regulations during use to ensure safe operation. The relaxation of the simple pressure vessel management requirements stipulated by the regulations is intended to facilitate the management of such vessels. .
Simple pressure vessels are uniformly classified as Class I pressure vessels. For pressure vessels, specific requirements must be met before you can use them with confidence. Special treatment is given only when it is difficult to verify or when verification holds little significance.
The design pressure is less than or equal to 1.6 MPa； The design temperature is greater than or equal to -20°C, and the maximum operating temperature is less than or equal to 150°C℃ ； Volume is less than or equal to 1.0 m3 ； Is the product of work pressure and volume less than or equal to 1.0 MPa·m3? ； The medium is air, nitrogen, carbon dioxide, inert gases, water vapor produced by the evaporation of medical distilled water, or mixtures of the aforementioned gases ； Other components such as oils that are not in sufficient quantities to alter the properties of the medium are permitted, provided that their flash point or ignition point is at least 30°C higher than the highest operating temperature of the container, and they do not affect compatibility with the materials ； The structure meets the requirements of clause 4.1.1.
You have a misunderstanding of **laws and regulations**: simple pressure vessels simply do not require a registration certificate for use, but they are still subject to supervision, and the requirements for such vessels are relatively high. It’s not the case that fewer requirements mean lower standards.
Users do not need to go through any registration process when using them; they are responsible for ensuring the safety of such simple pressure vessels on their own； Additionally, corresponding inspection and monitoring are required during manufacturing. Therefore, the regulations on simple pressure vessels in the \"Fixed Capacity Regulations\" are still relevant.
Stop talking about simple pressure vessels; after the implementation of TSG21, simple pressure vessels were immediately rendered invalid
:After the issuance of TSG 21, the \"Regulations on Safety Inspection of Simple Pressure Vessels\" became obsolete. However, clauses 3.2.15, 4.1.2, 4.2.9, 6.5, 4.15, and 7.1.11 of TSG 2016 \"Regulations on Safety Technical Inspection of Fixed Pressure Vessels\" are all provisions related to simple pressure vessels； Furthermore, the standard NB/T 47052-2016 \"Simple Pressure Vessels\" was introduced, which has improved the regulations and standards for simple pressure vessels today.
After the implementation of the new capacity regulations, the original TSG R0003 \"Technical Regulations for the Safety Inspection of Simple Pressure Vessels\" became obsolete. However, the new regulations still mention the concept of \"simple pressure vessels\", but do not provide a precise definition for them; thus, **it’s a real problem!** ! !
I’m not sure how to address you; for A2.3 in TSG-21, please check it on page P103 by yourself.
Thank you for the correction. However, in my opinion, there is a substantive difference between the previous definition and scope of simple pressure vessels and those of large-capacity vessels (including NB/T 47052). The new regulations for large-capacity vessels provide more lenient provisions for enterprises that engage in \"mass production\"; it is not recommended to treat such cases as simple pressure vessel cases unless mass production is involved