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Architectural Engineering Construction Services

Conceptual studies


  • First level study, preliminary evaluation of projects Estimates mostly based on assumptions and on previous similar projects
  • Rough cost estimate Information provided:
  • Identification of project assumptions requiring additional work (information, tests)
  • Evaluation of different design options Identification of major components of the system and preliminary environmental considerations
  • Rough estimate of capital and operating cost Information provided:
  • Preliminary process design Expected performances analysis Preliminary layout
  • Mass and energy balances
  • System and plant utilities evaluation Estimates for air emissions
  • Preliminary total installed cost estimate

Feasibility studies


  • Intermediate step in architecture and engineering, to evaluate the project
  • Based on some architectural and engineering data (quotations for components obtained by a number of vendors)
  • Cost estimate level of accuracy: ranging from 20-25% to 10-15%, depending on how accurate the architectural and engineering developed to issue equipment specifications and on the number of potential suppliers/vendors contacted
  • Possibility to submit local authorities technical and environmental impact documentation at this stage of the project.
  • Activities/Deliverables:
  • Process Flow Diagrams and Material Balance Diagrams
  • Equipment sizing and specification Pre- construction estimate
  • Project scheduling
  • Air pollutant fallout (estimation based on computer model)

Basic engineering


  • The core of any typical project: a complete process design package, including all information required to perform Detailed Engineering of the plant
  • Provide basic input to Civil/Electrical/Instrumentation
  • Activities/Deliverables:
  • Detailed process design and description
  • Computational Fluid Dynamics (CFD) overall energy balance study of the system
  • Detailed Mass & Energy Balances (for each module of the system, under full, partial and project load)
  • Process Flow Diagrams (PFD), Utility Flow Diagram (UFD) and Process & Instrumentation Diagrams (P&ID) for each module of the system
  • Detailed equipment list, sizing and specification
  • Detailed plant layout and battery limit schedule Programmable Logic System (PLC) conceptual design
  • Distributed Control System (DCS) conceptual design
  • Updated capital cost estimation

Detailed Engineering


  • Based on the basic engineering package, the ultimate stage in engineering
  • Activities/Deliverables:
  • Process engineering
  • Final process flow sheet and control strategies
  • Final plant layout
  • Pumps and Piping systems
  • Pollution Control systems
  • Mechanical Engineering
  • Process equipment specifications, equipment selection, and equipment layout
  • Specialty machine design
  • Civil/Structural
  • Site evaluation
  • Instrumentation & Electrical
  • Control diagrams (open and close control loops)
  • Input / Output list
  • Instrumentation: detailed list with specifications
  • Electric power distribution
  • Design of Power Generation Systems
  • Electrical equipment specifications
  • Site utilities
  • Process control and instrumentation
  • PLC and DCS design

Procurement services


  • A vital stage in the project
  • EHI knowledge of the market gives significant support to clients, ensuring an independent evaluation and timely, cost-effective results
  • Activities:
  • Evaluation and selection of vendors
  • Inquiries and Preparation of request for quotation (RFQ)
  • Quotations evaluation
  • Issuance of purchase orders, change orders and invoices including payment
  • Act as "Agent" for the client Orders Expediting
  • Pre-production, during production and pre-shipment quality controls and inspections (at the supplier's site)

Construction Management


  • EHI managerial and construction expertise, together with a detailed planning and cost control, ensure customers a successful implementation of contracts
  • Full on-site project management, engineering and construction support
  • Activities:
  • Construction site management
  • Planning, scheduling and staffing for safe and timely equipment commissioning
  • Coordination of construction crafts and workflow
  • Management of change orders
  • Site safety coordination and monitoring
  • Progress tracking
  • Civil, mechanical, electrical and instrumentation punch lists
  • Mechanical, electrical and control systems checkout
  • Piping walk downs and installation verifications
  • Maintenance of construction record

Startup and Commissioning


  • EHI engineers have the experience and skills to guarantee planning and follow-up of a smooth start-up of the plant
  • Activities:
  • Process evaluation, troubleshooting, optimization
  • Debottlenecking
  • Control system startup, tuning, optimization
  • Commissioning and startup assistance
  • Testing procedures, assistance and report
  • Operating procedures, process documentation
  • Operator and technical staff training
  • Statistical process control
  • Assistance to field operations
  • Training of the customer's organization personnel

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