Is it safe to have a safety device on the air storage tank? Can it be installed on a pipeline?
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The client now wants to have an air storage tank; there are no safety valve ports on the equipment’s piping, and the safety valves are installed on the pipelines. Is this acceptable?
It is theoretically possible to install a safety valve on a pipeline, but there are several key points to keep in mind: first, no shut-off valves should be installed on the pipeline between the safety valve and the storage tank, as this would block the discharge path； Secondly, the strength, diameter, and resistance of this pipeline must meet the discharge requirements, so as not to become a bottleneck ； Third, the installation location should facilitate daily inspection and maintenance. It is recommended that you refer to the relevant provisions of GB 150 and TSG 21, or consult a qualified design firm for confirmation. After all, since it involves the safety of pressure vessels, it’s best to have professional engineers do the calculations rather than making decisions on your own.
There are no manholes on the equipment yet; what should be the appropriate proportion for flaw detection?
What was the reasoning behind not equipping the air storage tank with safety accessories? This is a gas storage tank, which serves as a gas source; it is not a separation vessel like a steam drum, and therefore a safety valve must be installed. You need design documents for the piping used in the connection.
I’ve really never seen an air storage tank without safety accessories. If safety accessories are already installed at the outlet of your air compressor, and the design pressure of the air storage tank is greater than or equal to the setting pressure of the safety valve, then it’s not necessary to install additional safety accessories, as the tank serves merely as a buffer. For low-temperature storage tanks, it is necessary to install a relief device.
No safety valve is provided. The pressure of the pressure source is controllable (there is a safety valve), and no manhole is provided – how was this considered to reduce costs? It shouldn’t be possible, right?
The technical requirements specify that safety accessories shall be uniformly configured in the system by the process. Whether to install manholes should be determined based on the equipment specifications; it’s sufficient not to go overboard.
Why is a safety valve needed? If the design pressure of the gas tank is higher than the pressure of the gas supply, then a safety valve isn’t necessary.:)
So do you need another process design diagram as well? Is it really necessary to create a gas storage tank?
Who taught you to think this way? It’s okay not to install a safety valve; are you planning to use a burst disc instead? A release device is necessary, although it’s allowed not to be installed on the main body. The design team also needs to calculate the discharge capacity of such a device to ensure that it meets the required standards. If the pressure vessel design firm simply states that a device should be installed in the system, then the user must find a qualified firm to carry out the process design and to calculate parameters such as the system’s safe discharge capacity. This is purely unnecessary and results in extra costs.