Services
Mechanical strength calculations, pressure equipment design, technical consulting, and 7-step delivery workflow.
Explore AllMechanical, strength, and FEA simulations
ASME VIII Div.1, EN 13445, and TEMA compliance
Standards evaluation and technical reporting
End-to-end flow from inquiry to technical support
Pressure vessels, reactors, tanks, piping, and columns
ASME & EN compliant vessel and nozzle calculations
Thermal and mechanical optimized exchanger designs
Advanced structural, stress, and thermal simulations
Pressure, temperature, and corrosion allowance
Industries
Cross-disciplinary engineering solutions tailored to the dynamics and process conditions of diverse sectors.
Explore AllCustom machine design and structural stress verification
Process tanks, dye kettles, and heat recovery exchangers
Thermal, biomass, geothermal, and cogeneration plants
API 650 / API 620 storage tanks and refinery systems
Heavy industrial furnaces, cooling towers, and steel structures
Waste heat recovery and green energy integration
3D CAD modeling and innovative prototype development
End-to-end plant layout, piping flexibility, and layout design
Standards
Engineering standards guide fully compliant with ASME, EN, API, and TEMA international codes.
Explore AllPressure vessel mechanical sizing and FEA criteria
CE & PED 2014/68/EU compliant calculations
Welded storage tanks for petroleum and chemicals
Shell & tube heat exchanger thermal & mechanical sizing
About Us
10+ years of engineering experience, 3P philosophy, vision, mission, corporate values, and commitments.
Explore AllExpert engineering team founded on shared excellence
Precision, Performance, Professionalism + EN
Engineering beyond standards mindset
Reliability, technical excellence, and continuous growth
Our differentiators and engineering commitments
EN 13445
European Standard for Unfired Pressure Vessels
EN 13445 is the European harmonized standard for unfired pressure vessels, supporting the Pressure Equipment Directive (PED 2014/68/EU). POLIEN Engineering prepares calculation packages and technical files 100% compliant with Notified Body inspection criteria (TÜV, Lloyd’s Register, Bureau Veritas, etc.) for direct CE marking approval.
STANDARD EMBLEM
Design Criteria & Limits
Application Scope
- Pressure Vessels for European Export
- Textile Dyehouse & Chemical Preparation Tanks
- Food & Pharmaceutical Hygienic Pressure Vessels
- Industrial Water Filtration & Treatment Vessels
Polien / Core Disciplines
Engineering Calculation Scope
EN 13445-3 Mechanical Design Rules
Shell and domed end sizing, bolted flange design under EN 1591 rules, jacketed vessel limpet coils, and opening reinforcement.
PED 2014/68/EU Conformity Assessment
Fluid classification (Group 1 hazardous / Group 2 non-hazardous), Category I–IV hazard categorization, and Module B+F / Module G technical file preparation.
Minimum Design Metal Temperature (MDMT) & Impact Tests
EN 13445-2 brittle fracture prevention and Charpy V-notch impact test temperature specification.
Joint Coefficients & NDT Inspection Matrix
Joint efficiency optimization (z = 1.0, 0.85, 0.7) and non-destructive testing scope definition.
Polien / Deliverables