A bursting disc, also referred to as rupture disc is a non-reclosing pressure relief device. It is the pressure containing element of a rupture disc assembly, which typically consists of the rupture disc and a rupture disc holder. Rupture discs are designed to burst open to relieve an overpressure or vacuum condition at a predetermined pressure at a specific temperature.
ESI Technologies Group are exclusive distributor for all Continental Disc Corporation (CDC) rupture / bursting disc products in the UK and Ireland. CDC are a true world leader in the manufacture of rupture / bursting discs. Their HPX reverse acting rupture discs can achieve 5 Million pressure / vacuum cycles. This is the highest specification disc on the market for arduous applications. CDC have their own in-house Lot Qualification testing which far exceed the minimum code requirements, ensuring maximum safety for your plant and personnel.
Continental Disc rupture discs (bursting discs) utilise many innovative and patented designs, the highest quality raw materials from traceable sources and ISO 9001 manufacturing procedures performed by highly skilled & experienced craftsmen. With an extensive disc product range, we are also able to offer accessories such as rupture disc holders, burst disc indicators (BDI’s), fittings, gauges & clamps. Coupled with ESI Technologies wealth of knowledge and experience, means we can bring to the table our expertise on each specific application to assist your selection of the most appropriate product from CDC’s range for your requirements.
No single type of rupture disc is the best fit for all the numerous applications of an industry. Continental Disc Corporation has a full line of rupture discs in both tension and reverse acting designs to meet the design requirements for most applications. Each type of rupture disc has its own characteristics and capabilities. ESI will be happy to advise which disc is best suited for your application.
Reverse Acting Bursting discs are oriented in a system with the process media pressure against the convex side of the disc, placing the rupture disc in compression. As the burst pressure rating of the disc is reached, the compression loading on the rupture disc causes it to reverse, snapping through the neutral position, causing it to open by a predetermined scoring pattern or knife blade penetration.
Tension type bursting discs are oriented in a system with the process media pressure against the concave side of the rupture disc. As the burst pressure rating of the disc is reached, the tensile strength of the material is reached, and rupture occurs.
ESI would generally recommend using the higher performing reverse acting rupture disc as it has a longer service life.
Follow your company’s procedures for controlling and correcting the process that is producing an overpressure condition. Once the process is under control and appropriate safety precautions have been taken, replace the burst rupture disc with a replacement rupture disc. If a replacement rupture disc is not on hand at your facility, contact ESI Technologies Group to place your order. To avoid extended down time, we recommend keeping spare rupture discs in your inventory.
The burst disc indicator allows quick notification when a rupture disc bursts. The B.D.I. utilizes a thin metallic strip located on the outlet side of a rupture disc. It acts as a closed electrical circuit until the mating rupture disc bursts. When the rupture disc bursts, the metallic strip is severed, disrupting the flow of current through the strip. An attached alarm monitor (the circuitry to which the metallic strip is connected) can then transmit a warning signal.
CDC recommends purchasing three discs at a time so that in the event of an overpressure event, you will have a replacement for the ruptured disc, a backup to that disc, and one still on the shelf as further backup while replacements are ordered. It is also more cost-effective for the customer to purchase a multiple quantity, as it cuts back on the cost of necessary lot testing.
If you would like to know more about rupture discs, please send us an enquiry using our online form or simply chat with us either online via the chat bubble or by phone UK +44 1633877505, Ireland +353 21 4510900
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