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Design and cost management - 2020

Functional analysis of a product or service in the context of system engineering


This course is for technicians, engineers, buyers or managers wishing to participate effectively in the Functional Analysis of a product or service as part of a system engineering approach.  It identifies the methodological needs and proposes tools adapted to each level of analysis (systems, subsystems, components) and the management of the interfaces between the functional modules. It enables learners to:

  • acquire and increase knowledge in this methodological field
  • actively participate in a needs expression group at a system level and its subsystems level
  • contribute to the writing of Functional Specifications
  • participate effectively in a working group implementing a system engineering approach.


The course lasts 3 days (18 hours) and includes:

  • 8 hours of lessons; 2 hours of exercises
  • 8 hours of practical work (case studies selected  by learners)


Understanding of the process of Functional Needs Analysis and its result, the Functional Specifications, is a prerequisite for any system engineering approach. It involves understanding the tools that enable the decomposition of a complex system into functional subsystems, objectively describing the requirements and understanding the interfaces.

Highly interactive and highly operational, this course alternates theoretical presentations with examples of various applications and case studies in which the tools are put into practice.


Course level: Basic


Rodolphe ROUSSILLE :

Manager of the firm APTE. President of AFAV French Association for Value Analysis




  • Functional Needs Analysis (FNA), principles and key-concepts:
    • stakeholders, needs and expectations, systemic approach, product purpose, functional life stages of the product, system interactors, service function, constraints, requirements and margins of negotiation
  • Role of Functional Analysis in System Engineering:
    • system-level definition of needs, architecture design decisions, functional decomposition, organ-level needs traceability, service functions and global constraints
  • Conducting an FNA:
    • inventory, identification and characterization of functions by systemic, hierarchization and organization of functions, functional trees, traceability of needs from one level to another
  • The Technical Functional Analysis (TFA): 
    • impact of architectural choices and technical decisions on solutions, technical functions, Fast diagram, specific constraints, requirements, margins of negotiation
  • Case study
    • on topics contributed/chosen by learners from their daily professional practice
  • Documents related to Functional Analysis:
    • content, place and contractual role of the Functional Expression of Need (FEN), Functional Specifications (FS), Technical Specification of Need (TSN), Technical Solution Specification
  • Normative System of Functional Analysis - NF X50-100 and 151:
    • overview and critical analysis 


Scheduled in French:

PARIS: Cancelled - Upcoming date, please consult us.


For the English realization, please, consult us.


€1,400 excluding tax (20% VAT)

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