Question about rupture discs
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The pressure inside the tank reached up to 0.603 MPa, yet the rupture disc still broke. I don’t understand why this happened; please advise, experts! Can a replaced burst disc (that has not ruptured) be used again?
Those that have been replaced are not recommended for continued use. In general, pressure relief valves need to be replaced every 2–3 years, but they are usually not replaced unless an explosion occurs. The 0.6 burst pressure you mentioned might be due to the rupture disc having been in use for too long
1. Is the pressure inside the tank ensured not to exceed the maximum operating pressure? 2. What kind of container is this? Can it be equipped with two levels of safety mechanisms?
First, check the installation direction of the rupture disc to ensure that the flow direction of the medium is consistent with the pressure release direction of the rupture disc； Second, check and confirm whether there is overpressure in the tank, and improve the process operations
Used ones cannot be used; the knife holder must not have any deformations or cracks, as this can affect the blasting pressure. The blast discs need to be replaced regularly
Your design pressure is 0.7 MPa, and it has been in use for two years; there is a possibility of metal fatigue leading to failure when the pressure reaches that level. Also, has the temperature ever exceeded the designed value? Current regulations also require replacement every three years, regardless of whether blasting has taken place or not.
The burst disc is installed based on the pressure of the medium; it is generally set at the maximum allowable operating pressure or slightly higher, but not above the design pressure.
The burst disc is installed based on the pressure of the medium; it is generally set at the maximum allowable operating pressure or slightly higher, but not above the design pressure.
According to the standards, your maximum operating pressure must be less than 0.5985 MPa. Moreover, the rupture discs you use are likely to last for a long time; they are generally made of stainless steel, and metal fatigue occurs over time, so they need to be replaced regularly
I’ve been using it to save money; generally it needs to be replaced every 2 years. In your case, it’s recommended to shorten the replacement interval and also find out the reason. Replace the burst disc every 2 years, counting from the date of manufacture; don’t save on this cost. In your case, don’t use it for 3 years. Some people say that rupture discs are useless once they are purchased and stored in a warehouse; it’s hard to say for sure, but using the date of manufacture is the most reliable approach.
There are two possibilities: 1. It could be a problem with the product quality; 2. It depends on the actual service life of the rupture disc. After all, a rupture disc is a consumable item, and over time it can become fatigued, leading to premature rupture, which is normal