API 579-2-2024 PDF

Full title and description

API 579-2-2024 — Fitness‑For‑Service Example Problems Manual. A companion document providing worked example problems and step‑by‑step calculations that illustrate the application of the assessment methods and acceptance criteria presented in API 579-1/ASME FFS-1 (Fitness‑For‑Service). The manual presents problems in both SI and US customary units and is intended to support engineers performing FFS evaluations by showing typical workflows and numerical solutions.

Abstract

This Example Problems Manual collects representative, worked examples that correspond to the Fitness‑For‑Service assessment procedures in API 579-1/ASME FFS-1. Examples cover common damage mechanisms (metal loss, pitting, dents, cracks, brittle fracture, fire damage, etc.), demonstrate Level 1/2/3 calculation approaches, show remaining‑life and rerating calculations, and illustrate documentation and reporting conventions for FFS assessments. The worked problems are intended as a practical aid for engineers, inspectors, trainers, and developers of FFS tools.

General information

• Status: Current.
• Publication date: 15 May 2024.
• Publisher: American Petroleum Institute (API).
• ICS / categories: 75.080 — Pressure vessels; 75.180 — Piping and pipelines; 25.040 — Materials and corrosion (industrial equipment / plant engineering). (category guidance)
• Edition / version: 2 (API 579-2, 2nd edition / 2024).
• Number of pages: 664 pages (approximate, published PDF/hardcopy length).

Scope

This manual provides worked example problems that demonstrate the numerical implementation of the Fitness‑For‑Service assessment procedures given in API 579-1/ASME FFS-1. It is not a stand‑alone design code; rather it supports users of the main FFS document by showing stepwise calculations, unit conversions, assumptions, and typical input/output for the range of Part procedures (assessment organization, Level 1/2/3 methods, brittle fracture checks, remaining life estimates, and remediation options). Examples are intended for pressure vessels, heat exchangers, piping, and related pressure‑containing equipment encountered in oil, gas and chemical industries.

Key topics and requirements

• Worked examples for Level 1, Level 2 and Level 3 FFS assessments (screening, semi‑empirical, and numerical/FEA approaches).
• Examples covering general and local metal loss, pitting, gouges, grooves, dents, laminations, fire damage, and crack‑like flaws.
• Brittle fracture assessment examples (temperature, toughness, and fracture mechanics checks).
• Remaining life calculations, rerating and allowable limits derivation, and monitoring/inspection recommendations.
• Unit‑by‑unit solutions in both SI and US customary units, with clear statement of assumptions and acceptance criteria.
• Example documentation and reporting formats to support defensible FFS conclusions (fit-for-service, repair, run‑to‑next‑shutdown decisions).

Typical use and users

This manual is used as a practical reference by fitness‑for‑service engineers, inspection engineers, mechanical and materials engineers, integrity managers, NDT specialists, code review bodies, trainers, and developers of FFS calculation software. Typical uses are training, verification of calculation methods, cross‑checking software outputs, preparing FFS reports, and supporting integrity decision making (run, repair, rerate, or replace) for in‑service pressure equipment.

Related standards

Primary related documents include API 579-1/ASME FFS-1 (the main Fitness‑For‑Service recommended practice), API 510 (Pressure Vessel Inspection), API 570 (Piping Inspection), API 653 (Aboveground Storage Tank Inspection), ASME Boiler & Pressure Vessel Code (Section VIII), and relevant piping codes such as ASME B31.3. The example manual is intended to be used in conjunction with these construction and inspection codes when evaluating in‑service equipment.

Keywords

Fitness‑for‑Service, FFS, API 579-2, example problems, worked examples, pressure vessels, piping, brittle fracture, remaining life, rerating, Level 1, Level 2, Level 3, inspection, integrity assessment.

FAQ

Q: What is this standard?

A: API 579-2-2024 is the Fitness‑For‑Service Example Problems Manual — a collection of worked example problems that demonstrate the calculations and workflows used with API 579-1/ASME FFS-1 assessments.

Q: What does it cover?

A: It covers stepwise examples for FFS assessment procedures, including screening and detailed Level 1/2/3 calculations, brittle fracture checks, remaining life and rerating calculations, and documentation examples. Problems are shown in both SI and US customary units to illustrate typical applications for vessels, piping, and tanks.

Q: Who typically uses it?

A: Fitness‑for‑service engineers, inspection and integrity personnel, materials and mechanical engineers, NDT practitioners, trainers, and software developers use the manual as a practical reference and training aid.

Q: Is it current or superseded?

A: This edition is current (published 15 May 2024) and replaces the earlier 2009 example problems manual. Users should confirm they are using the 2024 edition when referencing worked examples.

Q: Is it part of a series?

A: Yes — it is the companion Example Problems Manual to the main API 579-1/ASME FFS-1 Fitness‑For‑Service recommended practice. The API 579 family also interrelates with inspection codes such as API 510, API 570 and tank inspection standards.

Q: What are the key keywords?

A: Fitness‑For‑Service, FFS, example problems, pressure vessels, piping, brittle fracture, remaining life, rerating, Level 1/2/3 assessments, API 579-1/ASME FFS-1.