Cylinder Inspection

Bill McGlinchey

Bill McGlinchey leads a course on NGV Cylinder inspections.

This course is designed to train students in the proper procedures to visually inspect CNG fuel systems from high pressure cylinders through the 1st stage regulator.  It covers cylinder identification, installation, General and Detailed Visual Inspections, proper venting (de-fueling), disposal and documentation.  It is intended to raise the reliability of the industry and confidence of the general public in the safe handling and maintenance of high pressure natural gas storage systems.


While there are no mandatory prerequisites, it is recommended that the students have a basic mechanical knowledge and familiarization of gaseous fuels and fuel systems.  A general automotive background is also advantageous.  Additional certifications may include the National Institute for Automotive Service Excellence A6, A8 and F1 categories of Automotive Electrical, Performance and LD Compressed Natural Gas Technician.

Upon completion of the course, students will:

  • Understand high pressure storage principles
  • Understand fuel system component definitions and operation
  • Identify cylinder types, construction and materials
  • Differentiate relative sensitivities to operating conditions and solutions
  • Identify applicable cylinder and system standards
  • Understand proper installation and handling of high pressure cylinders, transfer tubing, safety devices and pressure regulation
  • Knowledge of proper atmospheric venting equipment
  • Perform Scheduled and Emergency De-fueling procedures
  • Determine inspection requirements
  • Differentiate between General Visual inspection and Detailed Visual Inspection
  • Understand proper disposition procedures
  • Complete inspection forms and documentation
  • Identify types and levels of cylinder damage
  • Knowledge of various Pressure Relief Devices characteristics and failure modes


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