i took your class on the 17th of july  and passed the first class a how long do you have to wait to go for the chief. also do you have to be in a plant that is using your first class skills to qualify for the chief

thanks for all your help with the class and getting thru the exam

How much total high-pressure experience do you have?

A chief license needs 5 years total experience. 

To test for a chief license you must have held a 1st class for at least 1 year.  Notice I said "held".  You do not actually have to operate during this time.  It is a loophole.  You just have to have it for a year.

That being said, you still need a total of 5 years of actual experience to test for a chief license.

I hope this helps.

-Reed