How does a rupture disc work?
A rupture disk is a device designed to function by the bursting of a pressure-retaining disk. When the process reaches the bursting pressure of the disk, the disk ruptures and releases the pressure. Rupture disks can be installed alone or in combination with other types of devices.
Why does a disc rupture?
Rupture discs are safety devices with a defined breaking point, which respond to a specific pressure and are used for pressure relief in the most diverse range of applications. They are used to protect against overpressure or vacuum within a process, for the protection of man, environment and machine.
What is a ruptured disc in piping?
A rupture disc is a non-re-closing pressure relief device that protects a pressure vessel, equipment or process piping system from over-pressurization or potentially damaging vacuum conditions. Rupture discs are, next to pressure safety valves, the most commonly used pressure protection devices in industrial plants.
Why rupture disc is used in condenser?
However if there is failure of cooling water circuit in the condenser then Pressure starts increasing. Effect of increase in back pressure causes a decrease in efficiency of turbine and an increase in the pressure could damage the condenser hence rupture disc protects the equipments and stops the Turbine.
Where do you use a ruptured disc?
Rupture disks are commonly used in petrochemical, aerospace, aviation, defense, medical, railroad, nuclear, chemical, pharmaceutical, food processing and oil field applications.
What is difference between SRV and PRV?
The fluid enters from the equipment to the valve and starts moving out of the system. In case of PSV, when the pressure force becomes greater than the spring force the valve opens instantly and a ‘pop’ sound occurs whereas the PRV opens proportionally to the increasing pressure.
What is a rupture disc?
A rupture disc is a non-re-closing pressure relief device that protects a pressure vessel, equipment or process piping system from over-pressurization or potentially damaging vacuum conditions. Rupture discs are, next to pressure safety valves, the most commonly used pressure protection devices in industrial plants.
Why rupture disc is used in pressure safety valves?
In case of corrosive, adhesive, polymerizing or viscous fluid in the process piping system, rupture disc in upstream helps in safeguarding the functionality and reliability of pressure safety valves. Due to this reason less expensive pressure safety valve material can be used with corrosive fluid.
What is the rated (stamped) burst pressure for rupture discs?
For rupture discs with -5%, -10%, -2.5psig, or -5 psig manufacturing ranges, the rated (stamped) burst pressure is established by bursting a minimum of two discs per lot and averaging the actual burst results. This average burst pressure is the rated (stamped) burst pressure which will appear on the rupture disc tag.
How do you install a rupture disc with a relief valve?
Rupture discs may be installed in parallel or series with a relief valve. To prevent an incorrect pressure differential from existing, the space between the disc and the valve must be maintained at atmospheric pressure. A rupture disc is usually designed to relieve at 1.5 times the maximum allowable working pressure of the vessel.