What is the Nitrox practical assessment?

[TravisD]

A written quiz in addition to the 'written' final exam for the classroom part?

 

[Wheeler925]

A written quiz in addition to the 'written' final exam for the classroom part?

Should just be a quiz, analyze a tank or two, label them and fill out log, then shoot the **** with the instructor for an hour (or maybe that part is just me)

 

[The Chairman]

I do give a short lecture on limits when I do this, all the while asking lots of leading questions. I just need to be sure that the student gets it.

 

[tursiops]

But wait, there's more!

In addition to how to analyze and set the dive computer, you go "through the processes of obtaining enriched air from a blending facility, and to get a direct overview of how operations blend enriched air nitrox." (quote from the Instructor Manual) this include logging and marking the tank.

And then there are two Pre-Dive Simulations. #1 is:

Performance Objectives​

By the end of Enriched Air Dive 1 or Predive Simulation Exercise 1, student divers should be​

able to:​

1. Execute a dive within the no stop limits, maximum depth and oxygen exposure limits​

established by the instructor during predive planning.​

or​

2. Plan a dive within the no stop limits, maximum depth and oxygen exposure limits​

established by the instructor.​

And #2 is:

Performance Objectives​

By the end of this dive, with little or no help, students should be able to​

1. Execute a dive within the no stop limits, maximum depth and oxygen exposure limits​

established by the instructor during predive planning.​

or​

2. Plan a dive within the no stop limits, maximum depth and oxygen exposure limits​

established by the instructor.​

Yes, there is a 10-question Quick Review after the e-Learning and at the start of the Practical Application segment. I did not mention it above because it is not part of the Practical Application that the OP asked about...it comes before it.

 

[gratefulmjc]

A written quiz in addition to the 'written' final exam for the classroom part?

Sorry for any confusion...when I mentioned the "e-learning final exam" I was referring to the on-line PADI test.

The only other quiz/test/exam my gal and I had to do was in the classroom (I used the term "hands-on session")...we each got a multiple choice, true/false set of questions on paper to answer.

And, as @The Chairman mentioned, the banter with the instructor during the classroom work was surely a way for the instructor to know if the student got it.

 

[pjbonacum]

You have to analyze and label a tank properly. The shop may also ask a few questions to be sure you've mastered the content.

For the practical part of the class I would always have 1 cylinder out of a group of 4-5 correctly filled cylinders that would be way off from the expected 32% when testing. The first question to the student was then: "What do you now know? Which was followed by a glassy eyed blank stare.

Now knowing something is off the follow-up question was how to determine which one is correct: the analyzer or the mix in the cylinder?

Facing either a bad cylinder or a defective analyzer I would walk them through analyzing a known good cylinder to verify that the analyzer was working properly and then analyzing a few cylinders to verify that they were filled properly. Every student was provided with one cylinder with an incorrect mix.

Final question to each student relative to the analyzed results was: Would you dive with that mix based on your planned depth? Why and why not?

 

[Anish]

I found the whole class to be ridiculous. It boils down to Calculate the PP of O2 in a given mix at a given depth and make sure you stay below a pre determined limit (1.2-1.6 bar depending on how conservative). Which also in the end your computer will do for you. Use an O2 analyser to check your tank. That's about it. Something that can be added on to the AOW class in 20 min. But that wouldn't generate an entire new set of fees and a pretty C-card from PADI would it?

 

[MntryDvr]

Yeah, I forgot the log part. They often take this opportunity to sell you an O₂ analyzer. Buy it if you can afford it.

Good advice on the analyzer. Wish I had bought mine sooner.

 

[The Chairman]

Good advice on the analyzer. Wish I had bought mine sooner.

A CO analyzer is also a good thing. Mine finally stopped working. Maybe @DandyDon has a good suggestion!