Leak Testing Level I Topical Outline

1.0 Introduction

• 1.1 History of leak testing
• 1.2 Reasons for leak testing
• 1.3 Functions of leak testing
• 1.4 Training and certification

2.0 Leak Testing Fundamentals

• 2.1 Terminology
• 2.2 Leak testing units
• 2.3 Physical units in leak testing
• 2.4 Leak testing standards
• 2.5 Flow characteristics
• 2.6 Vacuum fundamentals
• 2.7 Vacuum system operation
• 2.8 Vacuum system characteristics
• • 2.8.1 General
  • 2.8.2 Vacuum Pumps
  • a. Mechanical pumps (positive displacement)
  • b. Vapor (diffusion) pumps
  • c. Sublimation pumps (getter pumps)
  • d. Ion pumps
  • e. Turbomolecular pumps
  • f. Absorption pumps
  • g. Cryopumps

3.0 Safety in Leak Testing

Note: It is recommended that the trainee, as well as all other leak testing personnel, receive instruction in this course prior to performing work in leak testing.

• 3.1 Safety Considerations
• 3.2 Safety Precautions
• 3.3 Explosive/implosive hazard
• 3.4 Pressure Precautions
• 3.5 Safety Devices
• 3.6 Hazardous and Tracer Gas Safety
• 3.7 Types of Monitoring Equipment

4.0 Leak Testing Methods

• a. Bubble testing.
• b. Ultrasonic testing
• c. Voltage discharge testing
• d. Pressure leak testing
• e. Ionization
• f. Conductivity
• g. Radiation Absorption
• h. Chemical – based
• i. Halogen detector
• j. Pressure change measurement
• k. Mass spectrometer
• l. Radioisotope

5.0 Advantages and limitations