Is a rupture disc installed on the tank’s emergency relief valve?
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Dear sea friends: Some of the emergency discharge valves for storage tanks are equipped with rupture disks, while others do not. What are the relevant standards in this regard?
Emergency release valve? Haven’t heard of it~ If you’re referring to a safety valve, then according to GB50160, options 5.5.5, 5.5.9, and 5.5.12 are available for selection. In summary, it is connected in series in front of the safety valve because the substance may corrode or clog it; it is connected in parallel because the reaction could proceed violently and the safety valve would not be able to handle the discharge.
I asked the people who work with storage tanks, and they replied that the sensitivity of safety valves is not as high as that of rupture disks; moreover, if a safety valve fails, it can cause serious problems, as such valves remain closed most of the time and only release pressure when there is an overpressure condition, and this is usually controlled during the filling process.
Whether to choose a safety valve alone, a burst disc alone, or a combination of both depends on the medium and operating conditions. Some media are highly corrosive and cannot come into direct contact with safety valves; therefore, a burst disc is connected in series before the safety valve. This is specified in relevant standards – you can look it up on Baidu
It depends on the properties of the medium, regarding whether it causes corrosion and whether it tends to clog the valves.
The explosion-proof plate serves the same purpose as a safety valve, but it is disposable
Depending on the properties of the material, if it is prone to corrosion, coking, or blockage, then to comply with safety regulations, it is necessary to install a burst disc in series with a safety valve.
It mainly depends on the medium; safety valves all have some degree of leakage. Those with high toxicity, a wide range of explosion limits, tendency to polymerize, or susceptibility to corrosion require the installation of blast disks as well as purging systems
It is related to the medium used; it is generally installed at the inlet of the safety valve to protect it. Here I use it mainly on liquid chlorine storage tanks, and it isn’t installed in other locations
According to the provisions of GB50160 5.5.5, for safety valves that may be blocked or corroded by materials, a burst disc should be installed in front of the safety valve, or preventive measures such as purging, heating, or insulation should be applied to the pipes at its inlet and outlet to prevent poisoning. ”This sentence is asking whether it is necessary to add something when the material is corroded, or whether it can be added or left out – one should decide based on their own needs
According to the provisions of GB50160 5.5.5, for safety valves that may be blocked or corroded by materials, a burst disc should be installed in front of the safety valve, or preventive measures such as purging, heating, or insulation should be applied to the pipes at its inlet and outlet to prevent poisoning. ”This sentence is asking whether it is necessary to add something when the material is corroded, or whether it can be added or left out – one should decide based on their own needs