S SS C CU Oweyer groupweyer special | stress calculationallround. smart.www.weyer-group.com
• stress verification in case of pressuresurgesThe impacts caused by an earthquakewill be calculated by means of a staticsu...
Secondary stress• caused by hindered thermal expansion(temperature, bearing friction)4 How will a project beexecuted?The e...
The weyer group is a group-independent corporate association of engineering and con-sulting companies in Germany, Austria,...
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Stress Calculation | weyer special

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The professional execution of a system analysis is an indispensable act when it comes to the professional construction of
pipe systems in plant engineering, and in many cases it is even demanded by law. The weyer group is in the position to
look back on many years of experience in the field of stress calculation for pipe systems. By means of a documented engineering
procedure which is strictly conforming to the law, an organizational fault with regard to plant safety and environmental
protection can be excluded at an early stage of the ongoing planning phase. For this purpose, state-of-the-art
software tools like CAESAR II, which is specifically tailored to execute pipe stress calculations, as well as various 3D-design
software tools will be deployed. The advantages of a system analysis are, among other things, lower capital costs and
reduced maintenance expenses, a safe operating of your plant and an optimized design of all joining pipes.

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Transcript of "Stress Calculation | weyer special"

  1. 1. S SS C CU Oweyer groupweyer special | stress calculationallround. smart.www.weyer-group.com
  2. 2. • stress verification in case of pressuresurgesThe impacts caused by an earthquakewill be calculated by means of a staticsubsidiary analysis. At customer request,a dynamic system analysis might beexecuted as well.Pressure surges induced by quick-act-ing valves and fittings can be analysedwithout previously conducting a hy-draulic calculation in advance.In case of different underlying causes, thefirst step will be establishing pressure pro-files and time response by means of a pre-viously conducted hydraulic calculation.The professional execution of a system analysis is an indispensable act when it comes to the professional construction ofpipe systems in plant engineering, and in many cases it is even demanded by law. The weyer group is in the position tolook back on many years of experience in the field of stress calculation for pipe systems. By means of a documented engi-neering procedure which is strictly conforming to the law, an organizational fault with regard to plant safety and environ-mental protection can be excluded at an early stage of the ongoing planning phase. For this purpose, state-of-the-artsoftware tools like CAESAR II, which is specifically tailored to execute pipe stress calculations, as well as various 3D-designsoftware tools will be deployed. The advantages of a system analysis are, among other things, lower capital costs andreduced maintenance expenses, a safe operating of your plant and an optimized design of all joining pipes.What we offer:À Static system analysis• steel and plastic pipes• underground pipes• impacts of earthquakes• effects of blowing offsafety valvesÀ Dynamic system analysis• pressure surges• vibrationsÀ Piping engineeringÀ Comprehensive projectexecution1 Why stress calculation?The stress calculation of pipe systems pro-vides relevant findings for the design, opera-tion and safety of a plant.Objectives of a static analysis:• stress analysis of pipe systems• proof of the adherence to allowableforces and moments acting on appli-ances, technical equipment and joiningpipes• determination of loads to be dischargedby the building structure• calculation of displacements of pipesystems• establishing storage conceptsObjectives of a dynamic analysis:• fatigue analysis in case of vibrationsStress calculation for the system analysis of pipe systemsweyer special | stress calculation | page 2weyer special | stress calculation
  3. 3. Secondary stress• caused by hindered thermal expansion(temperature, bearing friction)4 How will a project beexecuted?The essential steps towards a professionalsystem analysis are as follows:Data collectionIn case of new planning processes,isometric drawings and blueprint planningwill be the underlying factors. In case ofold plants, existing plans will be consultedor the plans and documents will be drawnby entry of on-site measured quantities.Stress calculationA system analysis can be an iterative devel-opment process in which the designer willalways be involved.DocumentationThe results of the calculations will bedocumented comprehensibly. In addition,the extract will be clearly presented withina “stress-isometry”.Typical results are:• flexibility analysis of the pipe system• forces and moments acting on hangersand mounting brackets• forces and moments acting on connect-2 Which construction typesare concerned?The classical applications for a systemanalysis are:• in accordance with the pressure equip-ment directive, all pipes carrying toxic,caustic and inflammable agents• pipes from DN 80 > +300°C• pipes from DN 200 > +200°C• pipes > DN 400• pipes with 2-phase fluid flow• pipes in which vibrations occur (com-pressors and piston pumps)• refrigerating pipes below -30°C fromDN 25• all high-pressure steam systems (allnominal sizes)• all flare systems (all nominal sizes)3 What are the underlyingbases of the calculations?The permissible stress values are deter-mined by ASME B31.1 or ASME B31.3, orDIN EN 13480 and FDBR respectively.These are the guiding regulations andstandards for the design and calculationof pipe systems.Primary stress• caused by permanently acting strains(pressure, dead load, settlements, springloads)• caused by temporarily acting strains(earthquakes, wind, pressure surges)weyer special | stress calculation | page 3weyer groupallround. smart.ing pieces• tracking forces and moments to be dis-charged into the surrounding buildingstructure• displacements of pipes• dimensioning of spring suspenders andcompensators• designing specific column elementsOndemand,theentireplanningofthepipework system and the corresponding appa-ratus engineering including the conceptualdesign of the pipe supports can be workedout deploying, e.g. 3D planning tools.This process can be carried forward untilthe stage of order placement is achieved.Your benefits:À Centralized planning for all designstepsÀ Long-standing experienceÀ Pressure surges calculation includingstability analysis of the pipe systemÀ Exclusive first-hand authority engi-neeringÀ Stress calculation, piping projectwork and secondary steel construc-tion including workshop drawings
  4. 4. The weyer group is a group-independent corporate association of engineering and con-sulting companies in Germany, Austria, Switzerland, Poland and the Netherlands.Since its establishment over 30 years ago, the weyer group has developed a wide range ofexpertise which has always been based on the expectations and wishes of our clients.weyer groupallround. smart.Your contactwww.weyer-group.comReferences:À 7(S) Engineering GmbH & Co.KG,DE - KölnÀ ACI Aquaprojekt Consult Ingenieur-gesellschaft mbH, DE - DresdenÀ Berzelius Stolberg GmbH, DE - StolbergÀ Chemieanlagenbau Chemnitz GmbH,DE - ChemnitzÀ DHC Solvent Chemie GmbH,DE - Mülheim/RuhrÀ Doosan Babcock Energy DeutschlandGmbH, DE - HohenthurmÀ eta AG engineering, DE - CottbusÀ eta AG engineering, DE - LeipzigÀ HA TECH Planungsbüro,DE - EisenhüttenstadtÀ JOHN BROWN VOEST GmbH, DE - LeipzigÀ RADICI Chimica Deutschland GmbH,DE - ZeitzÀ Siemens Turbomachinery EquipmentGmbH, DE - LeipzigÀ sonUtec GmbH, DE - SonnebergÀ Umwelttechnik & Wasserbau GmbH,DE - ErmslebenÀ Veolia Water Solutions & TechnologiesDeutschland GmbH, DE - ZwenkauÀ WULFF Deutschland GmbH, DE - Husum04/2013www.weyer-group.com

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