Consulting
FE Analysis For Heat Exchanger Top-Box
Introduction In the analysis conducted for the gas-inlet top box of a heat exchanger, which forms a part of the Torrefaction Tower, emphasis was placed
10 May 2024
Introduction In the analysis conducted for the gas-inlet top box of a heat exchanger, which forms a part of the Torrefaction Tower, emphasis was placed
Introduction In the context of a greenfield project centered on the construction of a power plant, fiberglass-reinforced plastic (GRP) pipes with diameters of approximately 2.5
Since its beginnings, in 1989, Dynaflow Research Group (DRG) has been involved in shaping the landscape of fiberglass engineering through research, design engineering, and consultancy.
Introduction In this case, slender steel conical towers are designated to support high-tension wires, subjecting them to various horizontal and vertical load components. The load
Introduction In the examination of our client’s initiative to assess and enhance the primary cooling water system within an established power plant, various configurations, and
Date: April 2nd, 2024 We are delighted to announce the celebration of Dynaflow Research Group’s 35th anniversary, marking a significant milestone in our journey of
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
Introduction The seawater system was classified as a class A system per the Service Limit State (SLS) standards. Constructed from reinforced fiberglass piping, it comprised
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.
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
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
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
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
Introduction In this case study, the focus was on conducting a stress analysis of the GRE piping system utilized to link the pumps to the
Introduction As a result of a failure in a fiberglass header in the undercroft of a chilled water system, the decision was made to replace
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
Introduction In this case study, we delved into the stress analysis findings regarding the revised flue gas overhead line in Singapore connecting a third-stage separator
Introduction In the current project, a static stress analysis was conducted to assess the performance of GRE headers connected to filter vessels. The purpose was
Introduction In this case study, a finite element stress analysis was conducted on a seawater dump caisson installed on the deck of a floating offshore
Introduction A plant in Asia requested a simulation study to be performed, both fluid mechanical (acoustical) and mechanical, of the compressor piping between the first
Introduction A serious crack next to a weld in the circulating water flow system was found but it was unclear what had caused this crack.
Hydrogen is considered to be a key element in the energy transition. This molecule is the most notable option for the decarbonisation of hard-to-abate sectors
As part of our responsibilities at DRG, we conduct both standard pressure drop calculations and surge/slug analyses for firewater systems. Our involvement spans various stages,
Geothermal energy is a promising renewable energy source, but it comes with its own set of challenges. Two significant issues in geothermal well operations are
Flow-induced vibrations in piping systems are a critical aspect of mechanical engineering, impacting the reliability and integrity of various industrial setups. The Japan Society of
Introduction In the field of engineering design, the precision of pipe flexibility analysis models is critically important for accurately assessing nozzle loads in steel piping
In 2013, a major incident occurred in a Louisiana chemical plant. In a nonroutine operation, plant operators attempted to start a heat exchanger which had
To understand pressure surges in large piping systems, a good place to start is at home. When you finish washing your hands, turning off the
Brief introduction to piping vibrations Vibrations are an oscillatory motion about an equilibrium. The oscillatory movement causes alternating stresses in the system, which, if excessive
The pulsation challenge of a variable speed reciprocating compressorA pulsation analysis according to the API 618 is a good method of preventing excessive vibrations in
ON-DEMAND 🕖 60 MIN 🌏︎ ENGLISH Solving Vibrations In A Two-Phase Process Line Frank Bos Partner Get instant access Free. Recording + slide
ON-DEMAND 🕖 50 MIN 🌏︎ ENGLISH Surge and dynamic stress analysis for an offshore wind farm using BOSfluids Mark Groen Software Lead Engineer
ON-DEMAND 🕖 25 MIN 🌏︎ ESPAÑOL Integración de BOSfluids con Caesar II y otros programas de tensión de tuberías Uri Peker Engineer Get instant
ON-DEMAND 🕖 35 MIN 🌏︎ ENGLISH BOSfluids integration with CAESAR II and other pipe stress programs Ryan Metcalf Manager USA Get instant access
A manhole interrupts the load-bearing shell of an elbow or tee, so the component is regarded as a non-standard piping fitting. The three fittings here are two 20 inch long-radius elbows, EX-23 and EZ-22, in SA-234 Gr. WP11 Cl. 1, and one 32 inch ASME B16.9 welding tee, FB-11, in
Furnace F-501 at a refinery heats crude through radiant coils made of A312 TP316Ti stainless steel. Each coil enters the radiant section at grade level, runs 21 loops parallel to the refractory lined furnace wall, crosses over to the roof section, makes 8 further loops against the roof, and leaves
Two identical Visbreaker bottom pumps at an onshore refinery were due for replacement. The existing pumps were of single side suction execution, the new pumps of double side suction execution. For the new pumps a minimum straight length of five times the diameter (5D) was specified directly upstream of the
A gas line between the high and low pressure separators of a hydrocracking unit failed in service, probably through material fatigue caused by vibration. An additional 3-way stop was fitted just downstream of the TSO valve to reduce vibration levels, and vibration was then measured at nine locations on the
The crude heating system serves one of two distillation trains: crude is preheated in a convection box, heated in the radiant section of the furnace and carried by a feed line to the tower. Crude heating generates two-phase flow, whose fluctuations impose the unsteady unbalanced loads at elbows and tees
At a refinery, a branch connection designated W31056, the 2″ line that ties in to the high-pressure steam attemperator J-3103 (a desuperheater), failed in service. A similar failure had occurred about twenty years earlier, in 1992. On-site observations report periodic movement of the connecting header, line 6″-S31022, which contains the
A refinery operator is replacing two existing steel main cooling water headers with Glass Reinforced Epoxy (GRE) piping. The two changes were raised as Technical Change Requests, and this case study covers the second of them, the “lube” cooling water header. The GRE consists of a header and a branch
A wash oil line was vibrating in the vertical section downstream of its angle control valve. It has been reported that the vibration amplitude increases with increasing flow, and in the future the mass flow rate may still be increased further. No vibration measurements had been carried out, so the
Undesirable vibrations were observed in the wash oil line between two vessels during activation of the wash oil flow, most severe in the vertical section immediately downstream of the angle control valve. An earlier study had already identified slug flow as the most probable cause and proposed mitigation measures, and
The 10″ inlet and outlet lines of furnace H301 carry two-phase content during all process conditions. Under certain process conditions, staff reported feeling like getting seasick when standing on the platform of the furnace, and the piping was seen vibrating mainly near the furnace. The impact of these dynamic effects
A flue-gas overhead line runs from a third stage separator to a waste heat boiler. It carries gas at a maximum operating temperature of 740 °C upstream of the orifice chamber and is designed for 755 °C in the hot-walled sections. At those temperatures the hot-wall material, stainless steel A240
Two existing steel cooling water headers were to be replaced with Glass Reinforced Epoxy (GRE) piping under two Technical Change Requests. This case study covers the first request, for the main cooling water header “boiler”. The second, covers the “lube” header. A flexibility analysis was required, together with recommendations, to
An 8-inch line carrying two-phase content from a heat exchanger to a gasoil stripper at a refinery had been vibrating for years, mainly in the two shorter horizontal sections, one downstream of the heat exchanger and one just upstream of the stripper. The operator had reported vibration for 5 to
A line in the creep range, where the weight loads set the support design The line studied here is the revised fluegas overhead line between the third stage separator and the superheater. It operates at 725 °C in the hot walled sections and 200 °C in the cold walled section,
A coil anchored at both ends, with the cross-over overloaded In a refinery furnace, the radiant coil carries crude. Under a project designated high TAN, the existing carbon steel radiant coil piping is to be replaced by stainless steel, grade A312 TP316Ti. This account presents the stress analysis of the
Lines assessed 4 Pipe content Two-phase gas-liquid flow, all process conditions Flow regime, start-up Slug flow Flow regime, normal operation Annular flow Pipe material A 358 type 321, main material Design temperature 400 °C Design pressure 77.5 bar, Lines 1 and 3; 81.0 bar, Lines 2 and 4 Liquid slug
Line temperature 700 °C Design temperature 755 °C Design pressure 4.2 barg Pipe material A 312 type 304H Allowable stresses ASME B31.3 Appendix A Expansion loop 4 inch, 6,000 mm deep Creep-range service on the catalyst withdrawal line A waste catalyst line runs from the regenerator to the waste catalyst
Recently, fatigue cracks were discovered in the first-stage discharge line’s small-bore instrumentation branches of a hydrogen compressor. Initial investigations pointed to excessive out-of-plane vibrations as the primary driver of these failures. While the system was originally installed in 1995 with a pulsation study, and further axial supporting was added in
In industrial effluent systems, piping integrity is often threatened by the geotechnical behavior of the surrounding soil. This case study examines the peer review of a stress analysis for effluent pipelines situated between valve chambers. The primary challenge identified is differential settlement, where unpiled concrete pit walls shift relative to
Introduction This case study presents the finite element analysis (FEA) and verification process conducted for the pressure-containing parts of the F35-340 actuator, developed by Actuator Technology Company. The primary goal was to demonstrate the structural integrity of the actuator under specified operating conditions and to ensure compliance with the requirements
This case study presents the fatigue assessment of the 28L oil separator (Atlas part number 1625481501), performed to verify the vessel’s durability under cyclical internal pressure in accordance with the AD2000 S2 standard. The separator is subject to a cyclic pressure loading from atmospheric pressure up to 15 barg, which
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