COURSE OVERVIEW:

Understanding valve classes and pressure-temperature ratings is fundamental to the structural integrity and safety of any pressurized piping system. This course provides a technical deep dive into the standards that define the limits of valve performance, focusing on the ASME B16.34 and API benchmarks. Participants will examine how material properties and operating temperatures interact to dictate the maximum allowable working pressure of a valve, ensuring that assets are never operated beyond their engineered boundaries.

The scope of this training encompasses the differentiation between various pressure classes, ranging from Class 150 to Class 2500, and how these relate to shell thickness and flange dimensions. We will investigate the impact of metallurgy on pressure ratings, specifically looking at how stainless steels and carbon steels diverge in performance as temperatures escalate. The curriculum covers the critical process of verifying these ratings through physical testing and documentation review, providing a safeguard against the accidental installation of underrated components in high-pressure service.

Coverage also includes the application of these classes in specific industrial contexts, such as power generation and petrochemical processing. By focusing on the verification of manufacturer data sheets and the interpretation of body markings and nameplates, the course empowers professionals to maintain rigorous quality control. Through this detailed study, attendants will gain the expertise necessary to specify correct valve classes for complex projects and verify the compliance of existing assets with current safety codes.

COURSE OBJECTIVES:

After completion of this course, the participants will be able to:

1. Interpret ASME B16.34 pressure-temperature rating tables for various material groups.
2. Differentiate between ANSI/ASME pressure classes and their equivalent PN ratings.
3. Apply the principles of hydrostatic shell testing to verify valve strength.
4. Select the appropriate valve class based on maximum expected process transients.
5. Identify the relationship between valve wall thickness and pressure containment.
6. Verify material compliance using Mill Test Reports (MTRs) and Positive Material Identification.
7. Understand the impact of creep and thermal fatigue on high-temperature pressure ratings.
8. Evaluate the suitability of valve end connections for specific pressure classes.
9. Conduct visual inspections of valve body markings for compliance with MSS-SP-25.
10. Analyze the safety margins built into international pressure rating standards.
11. Troubleshoot issues related to flange misalignment and gasket seating in high-pressure valves.
12. Manage the documentation and certification process for pressure-rated assets.
13. Execute a verification audit of existing plant valves against design specifications.

TARGET AUDIENCE:

This course is designed for Piping Engineers, Procurement Specialists, Quality Control Inspectors, Maintenance Supervisors, and Safety Officers responsible for pressure system integrity.

TRAINING COURSE METHODOLOGY:

A highly interactive combination of lectures, discussion sessions, and case studies will be employed to maximise the transfer of information, knowledge, and experience. The course will be intensive, practical, and highly interactive. The sessions will start by raising the most relevant questions and motivating everybody to find the right answers. The attendants will also be encouraged to raise more of their questions and to share in developing the right answers using their analysis and experience. There will also be some indoor experiential activities to enhance the learning experience. Course material will be provided in PowerPoint, with necessary animations, learning videos, and general discussions.

The course participants shall be evaluated before, during, and at the end of the course.

COURSE CERTIFICATE:

National Consultant Centre for Training LLC (NCC) will issue an Attendance Certificate to all participants completing a minimum of 80% of the total attendance time requirement.