CERTIFICATION EVALUATION TEST PAPER
2026 COMPLETE QUESTIONS AND
CORRECT ANSWERS
●● all fittings for medical gas work shall be kept separate from other
tools and kept free of grease or oil. if cleaned, only a degreaser such as
_____ is permitted Answer: trisodium phosphate or sodium carbonate
●● when brazing, joints shall by continuously purged with oil-free, dry
nitrogen NF to prevent the formation of _____ on the inside surfaces of
the joint Answer: copper oxide
●● what is the purpose of using an oxygen analyzer at the pipeline purge
prior to brazing? Answer: assure that all ambient air has been removed
from the pipeline
●● standard depth copper fittings for brazing that is mechanically
limited to a makeup depth shall NOT be less than that established by:
Answer: ANSI/ASME standard for brazing
●● stainless tube may be joined by any methods EXCEPT for what?
Answer: brazed
, ●● if copper tube in a medical gas system is to be joined using memory
metal fittings having a temperature rating of 1000 degrees F, the fittings
must have a pressure rating of NOT less than how many PSI? so what is
the minimum PSI? Answer: 300 PSI
●● which fitting is NOT permitted for joining vacuum piping? Answer:
Non-removable push-fit
●● NFPA 99 specifies that the medical gas piping system shall be
protected against all EXCEPT for what? Answer: any liquids
●● which type of copper tube hangers shall be used in a potentially
damp location? Answer: plastic coated or insulated with a material that
will not absorb moisture
●● if a nonmetallic flexible connector is being used in a Cat 1 health
care facility to connect the manifold to the gas distribution piping, what
is the maximum length (in feet) permitted for the flexible connector?
Answer: they shall be no longer than necessary
●● metallic flexible joints are being used in the pipeline for vibration
control. which of the following is NOT required of such joints? Answer:
suitable for service at 150 PSI or above