Leak Testing - Level II Topical Outline

1.0 Introduction

• 1.1 Leak testing fundamentals
• 1.2 Leak testing standards
• 1.2.1 Leak standards
• 1.3 Leak testing safety
• 1 .4 Leak testing procedure
• 1.5 Leak testing specifications
• 1.6 Detector/instrument performance factors

2.0 Physical Principles in Leak Testing

• 2.1 Physical quantities
• 2.2 Structure of matter
• 2.3 Gas principles and laws
• 2.4 Gas properties

3.0 Principles of Gas Flow

• 3.1 Modes of gas flow
(Molecular and viscous, Transitional, Laminar, turbulent, sonic)
• 3.2 Factors affecting gas flow
• 3.3 Geometry of leakage path
(Mean free flow of fluid, Clogging and check valve effects, Irregular aperture size, Leak rate vs. cross section of flow, Temperature and atmospheric conditions, Velocity gradient vs. Viscosity, Reynolds number vs. Knudsen number)

4.0 Pressure and Vacuum Technology

• 4.1 Properties of a fluid
• 4.2 Gas properties
• 4.3 Pressurization
• 4.4 Leak testing background/noise variables
• 4.5 Detector/instrument performance variables
• 4.6 Measurement and data documentation

5.0 Vacuum Technology

• 5.1 Nature of vacuum
• 5.2 Vacuum measurement
• 5.3 Vacuum pumps
• 5.4 Vacuum materials
• 5.5 Design of a vacuum system
• 5.6 Maintenance and cleanliness
• 5.7 Analysis and documentation

6.0 Choice of Leak Testing Procedure & Practical Training

• 6.1. Basic categories of leak testing
(Leak location, Leakage measurement, Leakage monitoring)
• 6.2 Types of leak testing methods
(Specifications, Sensitivity)
• 6.3 Basic techniques
(Pressurization or evacuation, Sealed unit with or without tracer gases, Probing or visual leak location, Tracer or detector probing, Accumulation techniques)