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 Fitness for Service API 579 1ASME FFS 1 2007 E397 QR Code
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Fitness for Service - API 579-1/ASME FFS-1 2007



A plant objective is to attain the maximum economic benefit and service life from existing equipment without sacrificing integrity. This requires an accurate assessment of the condition of the equipment and their suitability for the actual service. Fitness-For-Service (FFS) assessments are quantitative engineering evaluations that are performed to demonstrate the structural integrity of an in-service pressure equipment/component containing a flaw or damage. In June 2007 API and ASME produced a joint update of each society’s version of FITNESS FOR SERVICE.  The new standard is now called API 579-1/ASME FFS-1 2007 Fitness-For-Service. It has become the de facto international standard for conducting FFS assessments. The main deliverables from FFS assessments are improved plant integrity and reduced maintenance costs.

The participant in this integrated and comprehensive course will learn to apply the rules of the API/ASME 579 standard "Fitness-for-Service" to evaluate the integrity and remaining life of pressure vessels, storage tanks, piping systems, and pipelines, to make cost-effective run-repair-replace decisions, and select the appropriate repair options. In this program you will learn:

Course Objectives:

At the end of this course the participants will be able to:

  • Determine the fitness-for-service of operating tanks, vessels, piping systems, and pipelines; and make cost-effective run-repair-replace decisions based on the principles of API recommended practice 579 "Fitness-for-Service"
  • Provides the participants with the tools necessary to recognize and assess defects in pressure vessels, storage tanks, and piping
  • Presents and applies the fundamentals rules of the ASME code to operating equipment and systems
  • Introduce the practical application of the ASME and API rules for the structural integrity of static equipment and pipelines, and their use to assess the remaining life
  • Applies API/ASME 579 "Fitness-for-Service" through practical examples to analyze degraded conditions and make a cost-effective repair or use-as-is decisions
  • Applies the step-by-step 3-level approach of API/ASME 579 to evaluate inspection results and recognize potential failure modes
  • Evaluate the structural integrity of corroded or damaged equipment, and assess their remaining life. Degradation mechanisms include: brittle fracture, general metal loss, local wall thinning, pitting, blisters and laminations, mechanical defects (dents, gouges, misalignment, and distortion), crack-like flaws (stress corrosion cracking, weld flaws, crack-like defects), fatigue, and fire damage

Targeted Audience:

  • Refinery, Petrochemical and Process Plant Mechanical and Process Engineers
  • Technical Professionals
  • Inspectors, Maintenance Personnel
  • Project and Consulting Engineers
  • Engineering and Technical Personnel involved in plant mechanical integrity and reliability

Course Outlines:

Unit 1: Foundations of Fitness-For-Service Assessment:

  • Introduction
    • Overview of the American Petroleum Institute (API) codes and standards
    • Overview of the American Society of Mechanical Engineers codes and standards with historical background
  • Fitness For Service
  • Overview of API 579 contents, objectives, and applications
  • How to apply API 579 for cost-effective run-or-repair decisions
  • Fitness-for-Service Assessment procedure
  • An overview of what is new in the latest release
  • List of Parts and Annexes and examples of major Parts
  • PART 1 - Introduction
  • PART 2 - Fitness-For-Service Engineering Assessment Procedure
  •  Structure and Contents of the FFS Standard

Unit 2: Mechanical Integrity and Fitness for Service:

  • Overview of Mechanical Integrity of pressure equipment & piping system
  • ANNEX A - Thickness, MAWP & Stress Equations for an FFS Assessment
    • Calculation of time, MAWP (MFH) & Membrane Stress
    • Pressure Vessel & End Caps
    • Piping components & Boiler Tubes
  • ANNEX G - Damage Mechanisms
  • NDE techniques
  • PT, VT, MT, ET, UT, RT
  • Overview of Brittle Fracture Mechanism
  • Data Requirements
  • Assessment Techniques
  • Acceptance Criteria
  • PART 3 - Assessment of Existing Equipment for Brittle Fracture

Unit 3: Metal Loss - Corrosion and Pitting:

  • PART 4 - Assessment of General Metal Loss
    • Overview of Corrosion Mechanisms
    • Data Requirements
    • Assessment Techniques
    • Acceptance Criteria
    • Worked example
  • PART 5 - Assessment of Local Metal Loss
  • Overview of Local Metal Loss Mechanisms
  • Data Requirements
  • Assessment Techniques
  • Acceptance Criteria
  • Worked example
  • Overview of Pitting Corrosion Mechanisms
  • Data Requirements
  • Assessment Techniques
  • PART 6 - Assessment of Pitting Corrosion

Unit 4: Blisters and Local Damage:

  • PART 7 - Hydrogen Blisters, HIC & SOHIC
    • Overview of Hydrogen Damage
    • Data Requirements
    • Assessment Techniques
    • Acceptance Criteria
  • PART 8 - Weld Misalignment & Shell Distortions
  • Overview of Weld Misalignment & Shell Distortions
  • Data Requirements
  • Assessment Techniques
  • Acceptance Criteria
  • Worked example
  • Overview of Fracture Mechanics
  • Elements of RSTRENG
  • Data Requirements
  • Assessment Techniques
  • Acceptance Criteria
  • Worked example
  • PART 9 - Assessment of Crack-Like Flaws

Unit 5: Creep, Fire, and Mechanical Damage:

  • PART 10 - Assessment of Components Operating in the Creep Range
    • Overview of Creep Damage Mechanisms
    • Data Requirements
    • Assessment Techniques
    • Acceptance Criteria
    • Worked example
  • PART 11 - Assessment of Fire Damage
  • Overview of Fire Damage
  • Data Requirements
  • Assessment Techniques
  • Acceptance Criteria
  • Case study – Example of fire damage assessment
  • Overview of Mechanical Damage
  • Various software packages considered for FFS
  • PART 12 - Assessment Of Dents, Gouges, and Dent-Gouge Combinations
  • Software review
  • Overview and Wrap Up

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