Multidisciplinary Detailed Engineering of a Modular Sulphate Removal Package

At PMech, our work is guided by our ethos of delivering Blueprints of Honour—engineering solutions that are precise, practical, and built for execution.

We successfully delivered the multidisciplinary detailed engineering of a Sulphate Removal Package (SRP), translating the licensor’s process design into a fully coordinated, construction-ready modular system.

Project Overview

The Sulphate Removal Package is a critical unit within water treatment systems, designed to remove sulphates and protect downstream facilities, particularly in oil & gas and process industries.

For this project, the basic package was provided by the licensor, and PMech was responsible for converting this into detailed engineering suitable for modular fabrication and site installation.

The system was designed as a modular package, with fabrication in UAE ➔ installation in Mexico

This required high precision in engineering to ensure seamless execution across geographies.

PMech’s Scope

13 nos. of skids plus 6 off skid equipment

Piping Engineering, Layout & 3D Modelling

• Layout finalization and plot plan development for modular configuration
• Complete 3D modelling using AVEVA PDMS (now AVEVA E3D)
• Modelling of process piping, utility piping, ducting systems, and vent piping networks
• Participation in 30%, 60%, and 90% model reviews, including comment resolution and close-out
• Preparation of Piping General Arrangement (GA) drawings
• Generation of Piping Isometrics for fabrication and installation
• Development of Valve Lists and complete Bill of Materials (BOM)
• Clash-free coordination across piping, structural, and E&I disciplines

Piping Stress Analysis

• Pipe Stress Analysis using CAESAR II
• Stress analysis for metallic piping systems and GRE (Glass Reinforced Epoxy) piping
• Evaluation of thermal expansion, sustained and occasional loads
• Support selection and optimization for safe and reliable operation

Structural & Modular Engineering

• Skid Structural Analysis considering transportation and installation conditions
• Design and detailing of lifting schemes, including lifting frames/beams, slings, shackles, and accessories up to crane hook point
• Preparation of Foundation Loading Plans and Load Distribution Diagrams
• Tekla Modelling for structural detailing
• Development of Fabrication Shop Drawings aligned with modular construction

Electrical & Instrumentation Engineering

• E&I Installation Drawings
• Earthing Layouts and Cable Tray Layouts
• Instrumentation Location Layouts
• Preparation of Junction Box (JB) Schedules
• Development of Hook-up Drawings

Engineering Documentation & Procurement Support

• Preparation of Equipment and Instrument Datasheets
• Development of Bulk BOQs
• Support for vendor coordination and integration

Key Units Engineered

The scope covered multiple integrated units within the SRP system, including:

• Coarse Filter Units
• Multimedia Filter Units
• Deaeration Tower
• Vacuum Package
• SRU Feed Pump Skid
• SRU Membrane Train – Stage 1 & Stage 2
• CIP Package with Chemical Injection Skids

Standards and References

The engineering design and analysis were carried out in accordance with relevant international standards and best practices, including ASME, ASTM, ANSI, API standards, NFPA guidelines, IEC standards, other applicable project and regional specifications.

This project highlights PMech’s capability to translate licensor intent into execution-ready engineering, ensuring that complex modular systems are not only designed—but are fully buildable, transportable, and installable across global locations.

At PMech, every design is driven by clarity, coordination, and commitment—delivering engineering that performs in the real world.

Reach out to us at www.pmecheng.com or write to info@pmecheng.com to learn how PMech can support your projects.