ROEZ Stress Analyses SERVICE OFFER

www.rsa.roez.sk more than standard

DESIGN In the field of design of pressure equipment and steel structures we offer:

• strength calculations in according to standards AD 2000, EN 13445 and ASME Sec.VIII Div.1 by specialized soft-ware WinShell and PV Elite, resp. by own MathCad proce-dures,

• strength calculations by finite element method by the methodology DBA (design by analysis), in according to standards ASME Sec.VIII Div.2 and EN 13445,

• strength assessment of steel structures by software Scia Engineer,

• heat balance calculations and design of heat exchangers,

• consultancy and creation of drawing documentation.

Fig.1 Model of column and horizontal pressure vessel,

strength calculation, PV Elite

OPERATION In the field of operation, maintenance and repair of pressure equipment and steel structures we offer calculations based on rules and detailed analyses aimed to increase the safety and lifetime, optimization of maintenance and minimize losses from unplanned shutdowns. Our services in this area:

Fig.2 Deformation of frame, compressor station container

under wind load, Scia Engineer

• assessment of pressure equipment operability based on their actual state,

• reinforcement design, assessment and optimization for repairs of structures,

• determination of impact of changes in operating regimes to the safety and remaining lifetime,

• analyses of flange joint construction changes, tightness assessments,

• assessment of flaws and cracks, evaluation of propagation rate and admissibility.

PROOF DOCUMENTATION In the field of equipment of WWER nuclear power plants we offer elaboration of proof and qualification documentation. Design and check calculations and seismic qualification in accordance with legislative requirements constitute one of the mainstays of our activities.

Fig.3 Temperature field, butterfly valve loaded in accident

condition, Ansys

Fig.4 Assessment of torsional vibration, rotor of compressor

assembly, Ansys

Fig.5 Assessment of vertical tank seismic resistance, fluid -

solid interaction, Ansys

COMPLEX ANALYSES In the area of complex industrial applications which require interaction of various types of numerical analyses we benefit from more than 20 years of experiences. In this field we offer:

• analyses of devices operating in cryogenic or creep tem-peratures,

• assessment of rotary machines in according to API stand-ards, torsional and lateral vibration analyses,

• seismic resistance assessment of complex structures in-cluding fluid - solid interactions,

• CFD analyses,

• assessments of the causes of the equipment failures and analyses of accident scenarios,

• sensitivity analyses, optimizations and cooperation in the development of new equipment.

Fig.6 Flow rate, gate valve closure to full flow, OpenFoam