Last Update August 22, 2018


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Instituto de Soldadura e Qualidade (ISQ), was founded in 1965, and is a private and independent company providing inspection, testing, training and technical consultancy. iSQ provides solutions for clients in all sectors, to ensure that their assets and products comply with environmental, quality, health and safety standards and regulations.

The Company supports its customers performance improvement and risk reduction, offering high quality and innovative services and solutions, helping their infrastructures, equipment, processes and products to meet the standards and regulations for quality, security, environment and social responsibility.

iSQ's growth strategy is based on an increasingly important and sustained presence in the world thanks to its offices, delegations and associated companies in more than 15 countries.

The Company offers its customers global and integrated solutions adapted to their needs aiming to further increase the availability of their assets.


ISQ is a Portuguese organisation which provides scientific and technological support and promotes ongoing improvement, innovation and the safety of people and property in Industry and Services, with an international presence and vocation, ensuring its sustainability and the development of its employees.


To be recognised as an autonomous technological organisation that is international in scope, progressively expanding, which develops and provides independent, comprehensive services and innovative and integrated solutions, operating effectively, on the basis of its values


  • Customized solutions meeting the client needs 
  • Technological innovation targeted to continuous improvement
  • Independence as to the services provided
  • Continuous training of our human resources
Instituto de Soldadura e Qualidade (ISQ) - Pictures


ISQ provides in Brasil the following Services:

  • Engineering
  • Construction
  • Inspection and Testing


  • Structural Integrity Assessment / Life Assessment
  • Design Review (Structural, Piping, etc.)  
    - Pressure Equipment Calculation (Ex. ASME VIII)
    - Tension Analysis (Finite Elements Analysis)
  • Failure Analysis  (API 579 FFS)
  • Experimental Stress Analysis
  • Consulting Services on Materials and Welding Technology
  • Legal Inspection and Assessment (NR - 13)
  • Risk Based Inspection – RBI
  • Audits and Examinations
  • Health Safety and Environment - HSE  
    - Brazilian HSE Technical Requirements
    - Quantitative Risk Analysis
    - HAZOP and HAZID


  • Review of contractors: 
    - HSE and Quality Plans and Associated Procedures
    - Mechanical Completion and Commissioning plans and Procedures to ensure  they meet client and regulatory requirements.
  • Site monitoring of: 
    - HSE Inspections
    - Construction Quality
    - Mechanical Completion, Commissioning
    - Documentation for Operation

Inspection and Testing

  • Welding Inspection
  • Non Destructive Testing such as 
    - Ultrasonics: 
      1. B - C - T Scan
      2. TOFD (Time-of-flight diffraction)
      3. Phased Array AUT 
      4. IRIS inspection system 
    - Radiography
      1. Conventional
      2. Digital 
    - Industrial Endoscopy
    - Induced Currents
    - Guided Waves

Instituto de Soldadura e Qualidade (ISQ)

  • Av. Prof. Dr. Cavaco Silva, no 33, Taguspark, Oeiras, Portugal
  • +351 214 228 100
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