Effective Emergency Relief System (ERS) design helps companies meet risk-management goals, compliance requirements, and sound business practices. ioMosaic provides a total ERS solution with our comprehensive ERS design services, from reactivity testing for design basis determination to calculations for Z-axis deflection from dynamic loads.
Our team has decades of experience performing PRFS analysis and design.
Our risk-based approach helps mitigate near-unventable scenarios to a tolerable level of risk.
Better evaluate hazards in your facility with an accurate process simulation.
Delivering properly designed pressure relief systems that save both money and time.
Reasonable estimates of the expected time to failure (ettf) or expected time to yield (etty) are required and necessary for effective risk management as well as effective emergency and fire protection and response. Read this paper for a demonstration of calculating ettf or etty in fire exposure scenarios with Process Safety Office® SuperChems®.
Vessel rupture is typically caused by an increase in the internal energy of the vessel contents and insufficient emergency relief. Under fire exposure or internal heating by a runaway reaction, or both, the vessel wall temperature increases, the tensile strength of the vessel walls' metal decreases, and resistance to internal pressure decreases. Vessel wall dynamics analysis is a valuable tool capable of predicting not only when the vessel is expected to fail (i.e., stress due to internal pressure is greater than the ultimate tensile strength) but also at what temperature, pressure, and fluid composition. These conditions form the basis for consequence analysis. The available internal energy in the system is a source of fragmentation and deformation energy for the vessel shell, kinetic energy imparted to contents and fragments, and blast wave energy.
The present paper illustrates two selected systems under pool fire exposure. A detailed analysis is provided for the parameters that influence the predicted Time to Failure (TTF) and the internal available energy in the system when failure is predicted. Two key parameters that influence the expected level of vessel failure risk under fire exposure (i.e., TTF) include scenario frequency of occurrence and the available internal energy of the vessel contents.
This PSE module performs efficient tracking of process safety related data and analysis. A customized workflow allows for a specific operating unit or the entire facility to be studied and evaluated for compliance.
A large U.S. company in the oil and gas industry needed to evaluate their protective relief systems in a unit of abnormal operation in which a reactor in a two-stage reactor system was to be bypassed. The client wanted to have the capabilities to safely bypass either of the reactors while not having to shut down the entire unit. Read this case study to find out how we delivered solutions that empowered the client to confidently bypass either reactor without unit shutdown, safeguarding continuous operations.
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