There are five categories of gas competent person:
- Gas engineer;
- Gas engineering supervisor;
- Class I gas fitter;
- Class II gas fitter; and
- Class III gas fitter

The requirements to become a gas competent person for each category are:
i. Gas engineer:

• Degree (or qualifications equivalent to a degree) in gas, mechanical, civil, chemical, petroleum, fuel, electrical, mining, industrial engineering or a graduate of a recognized university / institution or any recognized engineering degree.
• Registered as a Professional Engineer with the Malaysia Engineer Board under the Engineer Registration Act 1967.
• Possess a minimum of two (2) years’ experience in fields related to gas pipelines or gas installation.

ii. Gas engineering supervisor:

Degree (or qualifications equivalent to a degree) or diploma in gas, mechanical, civil, chemical, petroleum, fuel, electrical, mining, industrial engineering or a graduate of a recognized university / institution or any recognized engineering degree.
Possess a minimum of 2 years’ experience in fields related to gas pipelines or gas installation.

iii. Class I gas fitter:

• Possess minimum Sijil Pelajaran Malaysia (SPM or equivalent).
• Minimum 18 years old.
• Possess a minimum of one (1) years’ experience in fields related to gas pipelines or gas installation with a gas contractor or in a recognized academic institution, government department or agency.

iv. Class II gas fitter:

• Certified as a Gas Fitter Class III.
• Working experience in maintaining, operating or monitoring or gas installation as an assistant to a Gas Engineer, Gas Engineering Supervisor or Fitter Class I or II for two (2) years while certified as a Gas Fitter Class III.

v. Class III gas fitter:

• Certified as a Gas Fitter Class II.
• Two (2) years’ working experience as an assistant to a Gas Engineer, Gas Engineering Supervisor or Gas Fitter Class I or II in maintaining, operating or monitoring gas pipelines or gas installation while certified as a Gas Fitter Class I
   

Note: A Gas Fitter Class I is of higher rank than a Gas Fitter Class II or III.  A Gas Fitter Class II is of higher rank than a Gas Fitter Class III.