QUESTION 1
Because radios often fail underground, this 4-letter acronym is the "paper" PPE that lists all hazards and authorized entrants for the shift.
What is a CSEP (Confined Space Entry Permit)?
After a successful transfer, the apron should be rinsed with this "universal solvent" before being hung up to dry.
What is water?
This is the person who actually goes inside the confined space to perform the work.
Who is the Entrant?