What does OATH stand for?
O= OK 1 tap/tug A= Advance/add line 2 tap/tugs T= Take up 3 taps/tugs H= Help 4 taps/tugs
SUDRH
STOP
UP
DOWN
What happens when the oxygen is not in the normal limit?
You cannot trust the other readings, you need to get fresh air in the confined space
How many feet do you need to monitor?
Every 4 feet