Intergraph PepS (PIPESTRESS) 2025 | Nuclear-Grade Piping Stress Analysis & Design Software
PIPESTRESS, commonly known as PepS (PIPESTRESS + EditPipe), is the industry-leading specialized solution for the static and dynamic stress analysis of critical piping systems . Trusted for over 40 years and continuously maintained under rigorous nuclear Quality Assurance procedures, it is the principal analysis program for major nuclear engineering organizations worldwide . The 2025 release (version 8.0) from Hexagon (formerly Intergraph) introduces groundbreaking capabilities for nuclear facilities, advanced reactor designs, and high-reliability process industries .
Core Functionality Overview:
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Comprehensive Nuclear & International Code Compliance: Performs rigorous linear elastic analysis with full support for ASME BPVC Section III (Classes 1, 2, 3), RCC-M (2022, Classes 1/2), RCC-MRx (for high-temperature/fusion reactors), KTA, and EN 13480 . Includes Class 1 fatigue analysis with environmental fatigue (US NRC RG1.207), heat transfer solver for thermal gradients, and elastoplastic factor (Ke) calculations per Code Case N-779 .
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Advanced Dynamic & Seismic Analysis: Offers sophisticated seismic capabilities including floor response spectrum analysis with multiple combination methods (Gupta, Lindley-Yow), nonlinear dynamic time-history analysis considering support gaps and impacts, and automatic meshing for modal extraction . Features the next-generation solver with multiple modal extraction and consistent mass model analysis for unparalleled precision in seismic evaluations .
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Specialized Piping Material Support: Models complex systems including buried HDPE piping according to ASME III Appendix XXVI, composite material piping with special EDF rules, and high-temperature reactor components per RCC-MRx .
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Integrated CAD & Workflow Compatibility: Seamlessly integrates with Intergraph Smart 3D, CADWorx Plant Professional, and other plant design solutions via industry-standard PCF file import. Includes translators from other analysis programs and automatic validation tools to ensure QA consistency across hardware platforms .
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High-Capacity & Multi-Case Analysis: Handles exceptionally large structures (3000+ piping elements) with up to 900 user-defined load and combination cases. Supports mixed-class modeling (different piping codes within same model), local coordinate systems, and comprehensive failure mode identification
