High-integrity Pressure Protection System - Traditional Systems

Traditional Systems

In traditional systems over-pressure is dealt with through relief systems. A relief system will open an alternative outlet for the fluids in the system once a set pressure is exceeded, to avoid further build-up of pressure in the protected system. This alternative outlet generally leads to a flare or venting system to safely dispose the excess fluids. A relief system aims at removing any excess inflow of fluids for safe disposal, where a HIPPS aims at stopping the inflow of excess fluids and containing them in the system.

Conventional relief systems have disadvantages such as release of (flammable and toxic) process fluids or their combustion products in the environment and often a large footprint of the installation. With the increasing environmental awareness, relief systems are not always an acceptable solution. However, because of their simplicity, relatively low cost and wide availability, conventional relief systems are still often applied.

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