Emergency Pressure Relief Systems - DIERS
Failsafe Emergency Pressure Relief Solutions
A well-designed, properly maintained 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 for multi-phase and/or reacting systems 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 Chemical Reaction Hazard laboratory. 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.
As winners of the 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.
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:
- Obtain physical, thermal and chemical properties of relieving materials under process and relieving conditions.
- Identify causes of overpressure
- Analyze the condition of the vessel contents at relieving pressure and temperature
- Select the appropriate type of relief device(s)
- Determine reaction forces on relief discharge piping
- Document the design work including all cases evaluated, design alternatives considered, and the reasons for design decisions.