DIERS is an acronym which stands for the Design Institute for Emergency Relief Systems. A consortium of 29 companies was formed by the name DIERS in 1976.

Dr. James Huff, one of the founding fathers of DIERS, established a methodology of determining the KD value of Pressure Relief Valves and KR values of Rupture discs experimentally. The method is described in ASME PTC-25.

There are some pillars which support this technology. As a pressure safety specialist or a recipient of process safety work, you should be familiar with these pillars. They are enumerated below.

1)The ERS design is not just a design issue; it is an optimization issue. In other words, the optimum ERS design is the one that brings the total cost of ERS design, effluent handling design and the environmental cost with the company risk at the minimum and the company potential at the maximum.

2) The term “two-phase homogeneous” is used in DIERS. It is an oxymoronic term because two phases cannot be homogeneous. A phase is a physically distinct, mechanically separable, homogeneous portion of matter. Its real use lies in the simplicity of determining the physical properties of a system.

3) The Coupling Equation and its solution.

This equation is one of the main pillars of DIERS technology and is mathematically complex.

To know more about this, please contact Dilip K. Das 1-816-400-3238, dilipkdas@gmail.com