11 Basic Facts That You Should Know About Rupture Disk

Rupture disk is one of important safety devices that are commonly found inside chemical plant. Rupture disk or bursting disk is installed to protect system, pressure vessel or equipment from over pressure and or damaging vacuum condition. It is a non-reclosing pressure relief device, according to ASME Code Section VIII, Division 1, 1988 edition.

Over pressure or extremely vacuum condition can cause catastrophic failure and death. So, rupture disk holds an important role to protect plant facility and workers’ safety.

Due to its undoubtedly vital function, it is very important to understand the basic fact about rupture disk. Keep reading this article to know the 11 basic facts that you should know about.

1. Rupture disk has one time use membrane, which breaks at a pre-determined differential pressure (vacuum or positive)

2. It consists of membrane, holder inlet, holder outlet, pre-assembly clip, J-hook, alignment pin, pre-assembly screw, flanges and rupture disk tag.

3. Rupture disk membrane is commonly made of aluminum, silver, nickel, Inconel, Monel, 316 stainless steel and graphite.

4. The nametag contains of information such like rupture pressure at certain temperature, disk material, size, type and manufacturing lot number.

5. Rupture disk can be used as single protection device or as back up for safety relief valve.

6. It offers instantaneous or quick response against overpressure.

7. Two major benefits of rupture disk are cost and leak tightness.

8. It is preferable to use rupture disk when the relieving content are non toxic and non hazardous materials.

9. Rupture disk can be installed at the upstream of safety relief valve to avoid safety relief valve plugging from the system that contains solid.

10. It can also be used as a barrier between safety valve and corrosive system.

11. A rupture disk is typically specified using minimum-maximum range of pressure at a specific temperature. However, you are necessary to specify also the normal burst pressure, the manufacturing range and the burst tolerance.

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