This case study describes the stress analysis performed on a firewater piping system located in the Middle East. The system was constructed using Glassfier Reinforced Epoxy (GRE) pipes. Most of the piping was buried underground and included several connections to above-ground steel piping, fire hydrants, and similar equipment. Analysis The
Introduction At a Flow Station in Nigeria, vibration issues were observed in the suction and discharge headers, as well as the pump recirculation line. To address these concerns and identify potential underlying issues, DRG conducted a comprehensive pulsation analysis combined with a mechanical response assessment. Analysis A stress model was
Introduction In this case study, we explored the pulsation and vibration phenomena at a gas compression station equipped with four centrifugal compressors. These compressors generate flow pulsations due to the action of the impellors, which can excite the system’s acoustic and mechanical natural frequencies. To understand and evaluate the system’s
Introduction During the start-up and normal operation phases of a Gasoil Hydrofiner system, significant vibrations were observed in its piping. These vibrations, described as “large amplitude,” were particularly concerning. The unit’s piping was divided across four separate pipelines. Analysis Upon examining the system under various process conditions, it was determined
Pressure surges ocurr in piping systems whenever there are sudden changes in flow resistance from steady operation. Surges can cause significant damage, also at locations far removed from where they are initiated. For large or complex piping systems, this can make their impact challenging to predict without specialist analysis. Dynaflow
Introduction In this case study, we encountered undesirable vibrations in the downstream line of an angle control valve within a wash oil line. Initially, the upstream wash oil boasted a pressure of 150 bar and a temperature of 400°C. However, downstream of the valve, there was a significant pressure drop
Introduction A surge analysis and static stress analysis were necessitated for an FRP ballast water system following a prior incident to prevent its recurrence. The ballast system’s function was to redistribute water among compartments to balance oil storage. Analysis Surge Analysis One of the main objectives of the surge analysis
Introduction In the North Sea, three monopiles were equipped with a deluge fire-fighting system. To ensure its effectiveness, a water hammer calculation was carried out. This system comprised a two-ring fire water setup, with four sprinkler lines linked to the lower ring. Additionally, considerations were made for potential future scenarios
Introduction In the context of a gas facility, the addition of new units necessitated the enhancement of the existing firewater system. This system was designed to ensure a reliable source of firewater storage, make-up, and distribution capacity to effectively address the plant’s fire safety requirements. Analysis The objectives of the
Introduction In this case study, the focal point was addressing the high vibration levels observed in the process piping extending from a heat exchanger to a separator. Concerns were raised regarding the potential for dynamic stress to induce fatigue failures in the equipment nozzles over time. The flow within the
Introduction In this case study, we addressed a notable vibration issue observed in the main 16” line at a chemical plant, which was suspected to stem from slug flow. Specifically, the concern centered around the 16” pipe connection linking a low-temperature separator and a heat exchanger. Dynaflow Research Group was
Introduction This case involved fulfilling a client’s request to perform a surge analysis and static and dynamic stress analysis about the cooling water lines and associated supporting steel on a dredger. Analysis The objective of the surge analysis was to define the cooling water flow rates during a steady state
Introduction In the process of extending an existing power plant, the addition of a new power plant was deemed necessary. This new facility was designed around a Combined Cycle Unit (CCU), which integrated both a Gas Turbine and a Steam System. Notably, the surface condenser of this new plant was
Hydrogen generation equipment has an inherent risk for internal explosions, posing an issue to safety. The hydrogen piping and equipment are required to withstand internal explosions by limiting the damage to deformation. Although this disqualifies the component for future use, safety is not compromised. The objective was to find a
A District Cooling System (DCS) fits the sustainability challenges that our society is challenged with. It provides cooling capacity from a central facility; chilled water is distributed from this central facility to multiple buildings through a network of underground pipelines. The central cooling facility works more power efficient and it
Shell is building a biofuels facility at the Shell Energy and Chemicals Park Rotterdam, the Netherlands (Pernis Refinery) that will have an annual production capacity of 820,000 tonnes of biofuel. The biofuels facility is expected to start production in 2024. The project is ranked at position 7 in the top
Why Pay Attention to a Line Filling Process? During a start-up/line filling process a wave front of fluid progresses it’s way through the empty* parts of the line. However, when this front is required to change direction through bends the change in momentum generates an unbalanced force, this unbalanced force
What is Hogging and Sagging and what are the effects on piping? When waves pass over the length of a ship, the ships profile rises and bows following the peaks and troughs of said wave due to the changes in bouyancy along the length. This effect is known as hogging
For an ammonia plant in Western Australia, cooling water is supplied by a Sea Cooling water (SCW) as well as a Fresh Cooling Water (FCW) system. Both piping systems were constructed out of fiberglass material with pipe diameters of up to 72”. Heat exchangers acts as the interface between the
Dynaflow Research Group has performed a root-cause analysis for a cooling water system that had 3 recent leakages. The failures were in 10” pipe and 18” pipe made of fiberglass material. Dynaflow Research Group reviewed the material data, engineering analyses and failure info and determined the root-causes of the failures.
Dynaflow Research Group provided consultancy services to finalize the construction of cooling water (CW) system of a chemical plant in the Texas, USA. The construction was interrupted for a period of 2 years. The CW system was constructed out of fiberglass material. A full design review was performed for the
DYNAFLOW RESEARCH GROUP (“DRG”) Enters into Reseller Agreement with Quality Professional Software (“QPS”) RIJSWIJK, The Netherlands – January 24, 2024 (Dynaflow Research Group BV) –
Dynaflow Research Group and Seawind Ocean Technology announce collaboration focusing on technical readiness of floating offshore wind applications in the Mediterranean Sea. This landmark partnership
