DEKRA Process Safety

Emergency pressure relief systems - DEKRA Process Safety

Failsafe emergency pressure relief solutions

A well-designed, properly operated emergency pressure relief system provides cost-effective, reliable protection to process industries at risk for overpressure situations, such as the chemical, pharmaceutical and related sectors. These systems protect reactors, storage tanks, columns, dryers and other process equipment, but must be correctly designed, operated and maintained throughout their lifecycle in order to perform their safety functions successfully.

Our team of specialists has significant expertise in performing emergency pressure relief vent sizing studies and can design or offer advice on every aspect of these systems. We integrate the initial hazard assessment and choice of design scenarios with the generation of necessary data in our specialist laboratories. Furthermore, we can undertake the design of appropriate secondary treatment facilities, provide data to enable mechanical engineering calculations to be performed, and can provide complete specifications for the whole emergency relief vent system. Finally, we can provide in-company training courses on emergency pressure relief design tailored to your specific requirements.

State-of-the-Art Design methods for Relief Systems - DEKRA Process Safety
Design methods for emergency pressure relief system

As winners of the 2001 Safety and Environmental Award of the Institution of Chemical Engineers for our design of a pressure relief system covering multiple vessels in a plant manufacturing a pyrophoric product, our expertise in the field has been formally recognized. You can rely on us for objective, professional advice based on technical principles and best practices.

Consult with an expert to find out more about our services for emergency pressure vessel systems.

From DIERS to vent sizing and beyond

Emergency relief systems must be designed specifically for an individual process and installation. Opting for a "standard" size will generally be inadequate, as there are numerous factors to take into consideration. Our approach is methodical, thorough and scientific, starting with a design procedure based on DIERS standards.

Following DIERS, the main components of our emergency relief systems services are as follows:

  • Identification of credible risk scenarios: we analyze each scenario, characterizing it and calculating the required relief area
  • Reactive and non-reactive systems: some calculations and procedures vary depending on the type of system in play
  • Data provision: data gathered describes the overall kinetics, thermochemistry and physical property characteristics under the relief conditions
  • Disposal system design: for safety and environmental protection reasons, the discharge must be carefully considered to prevent a secondary incident
  • Documentation: documenting hypotheses, scenario identification, process and experimental data, calculations and conclusions are necessary, as changes to the facilities will rely on this information to prevent re-calculation of existing devices, or designing new equipment with different criteria
  • Inspection and maintenance: we use RBI and RBM principles to design maintenance and inspection programs

Contact us to learn how you can benefit from our service.