NAUI NITROX CERITIFICATION
QUESTIONS AND ANSWERS
(LATEST)
Petroleum-based lubricants are not used with high-pressure oxygen
because _____. - ANSWERS-They may ignite and burn extremely
easily
All components of the _______ are required for a fire to take place. -
ANSWERS-Fire triangle
Any equipment that is used with pure oxygen or an oxygen level
above _______ must be cleaned for oxygen service. - ANSWERS-
40%
Cylinders and tank valves to be used with enriched air must be
cleaned and _______ lubricants used. - ANSWERS-Oxygen-
compatible
Even though you will not be using nitrox mixtures above 40%
oxygen, your cylinder should be oxygen cleaned and identified as a
nitrox cylinder because _____. - ANSWERS-It may be subjected to
pure oxygen at elevated pressures when it is filled
, In _________ mixing, a measured pressure of oxygen is added to a
cylinder, which is then filled to service pressure with air. -
ANSWERS-Partial pressure
The _____ method injects a measured flow of pure oxygen into the air
before it reaches the intake of the compressor. - ANSWERS-
Continuous-flow
_____ uses a material called a molecular sieve that selectively adsorbs
a thin layer of nitrogen from the air that passes over or through it. -
ANSWERS-Pressure swing absorption
_____ uses a semi-permeable membrane that allows oxygen to flow
through it more readily than nitrogen. - ANSWERS-Membrane
separation
An essential operation in using an oxygen analyzer is _____. -
ANSWERS-Calibrating it
An oxygen analyzer should display oxygen content to an accuracy of
_____. - ANSWERS-One-tenth of one percent
When analyzing a nitrox blend the _________ must be the same as
when the unit was calibrated with air. - ANSWERS-Flow rate
QUESTIONS AND ANSWERS
(LATEST)
Petroleum-based lubricants are not used with high-pressure oxygen
because _____. - ANSWERS-They may ignite and burn extremely
easily
All components of the _______ are required for a fire to take place. -
ANSWERS-Fire triangle
Any equipment that is used with pure oxygen or an oxygen level
above _______ must be cleaned for oxygen service. - ANSWERS-
40%
Cylinders and tank valves to be used with enriched air must be
cleaned and _______ lubricants used. - ANSWERS-Oxygen-
compatible
Even though you will not be using nitrox mixtures above 40%
oxygen, your cylinder should be oxygen cleaned and identified as a
nitrox cylinder because _____. - ANSWERS-It may be subjected to
pure oxygen at elevated pressures when it is filled
, In _________ mixing, a measured pressure of oxygen is added to a
cylinder, which is then filled to service pressure with air. -
ANSWERS-Partial pressure
The _____ method injects a measured flow of pure oxygen into the air
before it reaches the intake of the compressor. - ANSWERS-
Continuous-flow
_____ uses a material called a molecular sieve that selectively adsorbs
a thin layer of nitrogen from the air that passes over or through it. -
ANSWERS-Pressure swing absorption
_____ uses a semi-permeable membrane that allows oxygen to flow
through it more readily than nitrogen. - ANSWERS-Membrane
separation
An essential operation in using an oxygen analyzer is _____. -
ANSWERS-Calibrating it
An oxygen analyzer should display oxygen content to an accuracy of
_____. - ANSWERS-One-tenth of one percent
When analyzing a nitrox blend the _________ must be the same as
when the unit was calibrated with air. - ANSWERS-Flow rate
