News & Insights from Dynaflow Research Group

Engineering Training

DRG training courses 2026

Our 2025 classroom training course schedule for CAESAR II Statics, CAESAR II Dynamic and PV-Elite is online! We also offer a wide range of online training courses in fiberglass engineering, fluid flow, piping and pressure vessel design.

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tray weld analysis, finite element analysis, ASME standards, weld fatigue, vessel support integrity, thermal stresses, cyclic stress assessment, support ring weld, tray stability
Consulting

Tray Weld Finite Element Analysis

The vessel under consideration features three horizontal trays positioned at different elevations. These perforated trays are supported by and welded to a support ring, which

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catalyst withdrawal
CFD

CFD and FEA Analysis of a High-Temperature Tee in Chemical Processing

In the chemical processing industry, equipment integrity under extreme conditions is paramount for safety and efficiency. This case study examines the thermal and mechanical analysis of a 2” equal tee subjected to high-temperature fluidized catalyst streams. The project’s objective was to assess the tee’s integrity where a 690°C catalyst stream

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fiberglass, frp, fiberglass engineering, cooling water network
Asset Integrity

Asset Integrity Review of Fiberglass Piping in Cooling Water Network

A petrochemical facility has been experiencing recurring failures in its fiberglass piping Cooling Water (CW) network. With seven failures reported up to 2014 and a recent failure in November 2023, the integrity of the system has come under scrutiny. As the fiberglass piping approaches its 20-year design lifetime, a comprehensive

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fiberglass, gas pipeline, surge analysis, steady-state analysis, transient analysis, fiberglass gas pipeline
Fiberglass Engineering

Surge Analysis of a Fiberglass Gas Pipeline

A fiberglass gas pipeline is being implemented to supply gas from a compressor station to a delivery point. As the pipeline approaches completion, ensuring its operational safety and integrity is paramount. This case study examines the surge analysis conducted on the buried portion of the pipeline to identify potential vulnerabilities

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ammonia plant, colling water system, fiberglass, frp, design review
Ammonia Plant

Design Review of Cooling Water Systems for Ammonia Plant

An ammonia plant in Australia has experienced recurring failures in its cooling water systems since its commissioning in the mid-2000s. The plant utilizes two primary cooling systems: a Sea Cooling Water (SCW) system and a Fresh Cooling Water (FCW) system. The SCW system, with a high capacity, consists of multiple

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fatigue analysis, industrial pressure vessel
Fatigue Assessment

Fatigue Analysis of Industrial Pressure Vessel

This case study examines the structural integrity of an industrial pressure vessel subjected to cyclic thermal and pressure loading. In processes where such vessels experience significant temperature and pressure fluctuations, ensuring the longevity and safety of these critical components is paramount. The primary objective of this study is to assess

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Finite Element Analysis, FEA, Thermal Fatigue, Heat Exchanger, Header Boxes
Fatigue Assessment

Thermal Stress Analysis of Air Cooler Heat Exchanger Header Box

This case study examines the structural integrity of header boxes in an industrial air cooler heat exchanger subjected to cyclic thermal loading and static pressure. In processes where heat exchangers experience significant temperature fluctuations, ensuring the longevity and safety of critical components is paramount. The primary objective of this study

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pulsation studies, fpso, Compressor systems
Fluid Dynamics

Pulsation and Vibration Analysis of FPSO Compressor System

Floating Production Storage and Offloading (FPSO) units play a crucial role in offshore oil and gas production. A critical component of these systems is the compressor skid, which compresses natural gas for processing or export. This case study focuses on the pulsation and vibration analysis of a three-stage reciprocating compressor

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pulsation analysis, reciprocating compressor system
Compressor Systems

Pulsation Analysis and Optimization of a Compressor System

This case study examines a reciprocating compressor system operated by a leading energy company, used for compressing natural gas. The system consists of three identical compressor units, each with two stages (suction and discharge pulsation suppression devices and connected piping), supplying gas to a common header. This system had been

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water hammer, jetty fire protection systems
Fluid Flow

Mitigating Water Hammer Effects in Jetty Fire Protection Systems

This case study examines the cooling water and foam systems located in two jetties (Jetty A and Jetty B) of a major industrial facility. These systems, critical for fire protection, have experienced significant issues related to water hammer effects and structural integrity. The primary objectives of this study are to

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water gas mixture
Firewater

Surge and Stress Analysis for a Firewater System

A client designed a foam piping system that covers the three tanks in a tank pit in the harbor. The firewater system is directly connected to the general water supply. The main pipeline passes through the foam house where the water is mixed with foam. A manifold divides the mixture

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Rotary Lobe Blower
Fluid Flow

Pulsation damper sizing according to API 619

A manufacturer of pulsation dampers requested Dynaflow Research Group to verify the performance of one of its discharge silencer designs in combination with a double rotary lobe gas blower by means of a pulsation study. The scope of the study consisted of a connecting straight pipe spool and the silencer

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nozzle, local mesh refinement, FEA
Fatigue Assessment

Fatigue Analysis For A Reactor Feed Pressurization Drum

A fatigue analysis has been done for a reactor feed pressurization drum. The vessel operates under cyclic pressure ranging from 25 psig to 200 psig (1.7 – 13.8 bar), with a design life of more than 5 million cycles. Additionally, it is subjected to 200 full-range cycles from atmospheric pressure

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seawater supply header, static stress analysis, GRE piping, CAESAR II, ISO 14692, pipe stress analysis, pressure surges, support arrangement, unbalanced loads, expansion bellow
Fiberglass Engineering

Seawater Supply Header: Static Stress Analysis

The above-ground seawater supply header is designed to transport seawater from two tie-ins in a discharge manifold of the seawater pumps to AGA. A comprehensive static stress analysis was necessary to determine the stress levels within the Glass Reinforced Epoxy (GRE) line. Additionally, it was crucial to define a support

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LNG terminal settlement, piping failure analysis, plastic deformation piping, Vacuum Insulated Piping assessment, pipe stress analysis, Dynaflow Research Group, mitigation strategies for piping, soil settlement impact, pipeline deformation analysis
Finite Element Analysis

Incident Analysis for Plastically Deformed Line Due to Settlement

At an LNG terminal, an unexpected settlement of 12 inches of soil, containing several sections of Vacuum Insulated Piping (VIP), occurred. Because the above-ground pipe supports were unaffected by the settlement, the differential displacement between the above-ground supports and the underground soil resulted in plastic deformation of some of the

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gasholder sizing review, cokes gas network, annual flaring volume, substitute gas, gasholder size impact, gas production-consumption mismatch, statistical analysis of gasholder, operational strategy in gas networks

Gasholder Sizing Review: An Analytical Case Study

This case study presents a comprehensive review of gasholder sizing within a cokes gas network. The primary objective is to evaluate the impact of adjusting the gasholder size on reducing annual flaring volumes and providing a buffer for short-term discrepancies between cokes gas production and consumption. The study explores various

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sulphur recovery burners, stress analysis ASME VIII Division 1, Finite Element Analysis burner, nozzle load assessment, burner design modifications, burner stress analysis, pressure vessel code compliance, burner structural integrity
Pipe Stress

Sulphur Recovery Burners Assessment: Stress Analysis

DRG was engaged to conduct a stress analysis for two sulphur recovery burners, adhering to ASME VIII Division 1 Boiler and Pressure Vessel Code. This analysis involved traditional Division 1 calculations complemented by Finite Element Analysis (FEA) to evaluate the impact of nozzle loads on critical junctions. Additionally, an assessment

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