Maintaining and Updating Certification Examinations

Maintaining and Updating Certification Examinations

May 1, 2023 / 5 mins read

It is extremely important to maintain and update your certifications so that you don’t risk your credentials lapsing. NITC is here to make your examination process seamless!

Certification Durations
For complete details of the duration of each certification and the requirements for recertification, visit the NITC certification lookup page at

Medical Gas Certifications
Medical Gas Certifications including ASSE 6005 Medical Gas Generalist, ASSE 6010 Medical Gas Installer, ASSE 6020 Medical Gas Inspector, ASSE 6030 Medical Gas Verifier, ASSE 6040 Medical Gas Maintenance Personnel, and ASSE 6050 Medical Gas Instructor are good for three years from the date of examination. To learn more about requirements, testing, costs, and certification duration visit Recertification requires successfully passing a multiple-choice open-book examination. The recertification examination consists of forty questions based on the most current edition of the NFPA 99.

Star Certifications
Star Certifications are offered in Refrigeration, Fire Sprinkler Fitting, HVAC, Steam/Pipe Fitting, and Plumbing. Details are available online at All-Star Certifications are good for 5 years. Recertification requires passing a fifty (50) question, non-proctored, multiple choice open-book examination within ninety days of the expiration date of certification.

NITC Journey Level Certifications
Journey Certifications consist of Journey Level HVAC. Journey Level Plumber, and Journey Level Steamfitter/Pipefitter. Details can be located at Certification is good for five years. Recertification can be accomplished by successfully passing a twenty-five (25) question, non-proctored, multiple choice open-book examination within thirty days of the expiration date of certification.

Medical Gas Brazing Process Performance Tests
NITC offers practical Braze Tests to cover the full range of copper tube sizes used in the installation of Medical Gas Systems as required by the latest editions of the NFPA 99 Healthcare Facilities Code and ASME Section IX Boiler and Pressure Vessel Code. Detailed information is provided at The duration of Certification is Indefinite, if continuity is maintained without lapse (Six (6) months maximum between braze dates). Submittal of a brazing continuity form before the expiration date is required.

Braze certification will be expanded for six months from the date of the most recent brazement. If the braze has not been performed on or before the expiration date the braze certification must be renewed by requalification. The recertification test requires submission of one vertical up-flow joint following the BTS15 Braze Test Specification.

HVACR Braze Certification
With current new alternative refrigerants functioning at high pressures, it is essential to ensure a leak-free system by installing properly prepared, quality brazed joints. The Braze Performance tests are designed to ensure this occurs. Complete details can be found at Certification is good for six months from the date of the braze test. Braze certification will be continued for six months from the date of the re-qualification test for submission of one Vertical Upflow joint following R78 Braze Test Specification.

NITC can assist you in learning how to maintain your certifications and requirements for recertification. For additional information about The National Inspection Testing and Certification Corporation (NITC) testing programs, and available certifications visit