Senior Hydraulic & Pipe Stress Engineer – High-Pressure Vertical Concrete Pipeline Analysis

We are seeking an experienced engineering specialist to support the hydraulic, transient, and structural assessment of a high-pressure vertical concrete pumping pipeline for high-rise project.

The work requires strong practical experience in hydraulic modelling, pressure transient analysis, pipe reaction forces, and piping stress/support load calculations.

Main Scope

The selected engineer will be required to perform:

Steady-state pressure-drop analysis for several operating elevations.
Pressure-versus-elevation profiling of a long vertical concrete pumping pipeline.
Non-Newtonian/slurry flow modelling using appropriate concrete rheological properties.
Hydraulic reaction-force calculations for critical horizontal elbow locations.
Dynamic transient / shock-wave analysis for selected operating events such as pump startup, shutdown, and emergency trip.
Determination of maximum transient pressures and governing hydraulic force vectors.
Structural piping analysis of selected intermediate vertical riser anchors/supports.
Calculation of anchor reactions including:
Fx, Fy, Fz
Mx, My, Mz
Assessment of pipe wall-thickness safety factors for very high dynamic operating pressures.
Review of pump operating capability against calculated system resistance, where manufacturer data are provided.
Preferred Software Experience

Strong experience with one or more of the following is required:

AFT Impulse
AFT Fathom
AutoPIPE Advanced
CAESAR II
Mathcad
ANSYS Mechanical, where required for local verification

Experience with AFT Impulse and AutoPIPE/CAESAR II is particularly desirable.

Required Technical Background

Applicants should have demonstrated experience in areas such as:

Hydraulic transient / surge analysis
High-pressure pipeline systems
Slurry or non-Newtonian flow
Concrete pumping systems
Bingham or Herschel–Bulkley rheology
Pipe stress analysis
Dynamic piping loads
Anchor and restraint reaction calculations
High-pressure pipe wall-thickness assessment

Previous experience with long vertical risers, mining slurry pipelines, paste backfill systems, high-pressure pumping systems, or similar applications will be considered highly relevant.

Deliverables

The selected engineer will be expected to provide:

Engineering assumptions and modelling basis
Native/editable model files
Calculation sheets
Pressure profiles and result plots
Steady and transient pressure results
Critical elbow force components and resultants
Anchor reaction tables
Wall-thickness/safety-factor calculations
Summary of governing cases
Technical comments and conclusions
Final engineering calculation/report package

All models and calculations must be editable and transferred at completion.

Detailed drawings, project geometry, operating pressures, equipment information, elevations, and client-specific information will be provided only to shortlisted candidates after initial technical evaluation and agreement to maintain confidentiality.

Project information shall not be shared, published, or used in portfolios without written authorization.

Proposal Requirements

Please include:

Your relevant engineering experience.
Examples of similar hydraulic transient or piping stress projects.
Software you personally use and your experience level with each.
Experience with non-Newtonian/slurry/concrete flow modelling.
Experience with AFT Impulse and AutoPIPE or CAESAR II.
Your proposed engineering approach.
Estimated hours or fixed-price proposal.
Your availability.

Please do not submit a generic proposal. Applications demonstrating directly relevant technical experience will be prioritized.

The project may be awarded in milestones, beginning with development and validation of the hydraulic model before proceeding to transient and structural analysis.