Title Page

  • Conducted on

  • Prepared by

  • Location


  • I am medically fit to undertake a CCR dive


  • Check Oxygen Tank Content

  • Check Oxygen Tank Pressure

  • Check CFM Valve - count drop in 10 Bar - should be around 10 seconds

Diluent and Bailout

  • Diluent and Bailout Tank(s) - Check Content - O2% and He%

  • Diluent and Bailout Tank(s) - Check Preassure

Monox PPO Display

  • Check Battery Plug

  • Turn on Display - working

  • Battery Check

  • Check calibration in Air (0.21-0.21-0.21 at sea level)

  • If sensors don't align as above - calibrate in Air

Shearwater Computer

  • Turn on Display - Working

  • Battery Check

  • Check calibration in air (0.21-0.21-0.21 at sea level) - if not calibrate in later step

Scrubber Canister

  • Filling of Canister done correctly?

  • Check - Canister internal O-Rings (Black and Red at bottom and black at top)

  • Check O-Ring in Canister lid

  • Close Canister - check markings - install snap ring

  • Conduct Positive and Negative Pressure Test on Canister

Counter Lungs

  • Fit Exhale Counter Lung (Ensure it is dry before fittiing)

  • Fit Inhale Counter Lung (Ensure it is dry before fitting)

  • Fit counter lung to canister


  • Visual Inspection of Mouthpiece and open/close mechanism

  • Check Mushroom Valve

  • Conduct Positive and Negative Loop Pressure Test

  • Conduct Loop Flow Gas Test

  • Loop Counter Lung connections

<br>Gas Line

  • ADV/Exhale Counter Lung Connection

  • Tank First Stage Conneciton


  • Cell Housing / Inhale Counter Lung Connection

Positive and Negative Pressure Check

  • Conduct 2 minute Positive Pressure Check

  • Conduct 2 minute Negative Pressure Check


  • Oxygen Flush Conducted

  • Monox - If Calibration Required - Calibrate

  • Shearwater - If Calibration Required - Calibrate

  • Ensure all monitors agree


  • BCD and ADV Connection

  • BCD and ADV Operating Control

Pre Breath

  • Conduct 5 minute pre-breathe

Safety Checks

  • Conduct Pre-Dive Safety Check

  • Undertake O2 Flush at 5 meters - check cell readings

  • Open Diluent Valve and conduct Dill flush - check cell readings

The templates available in our Public Library have been created by our customers and employees to help get you started using SafetyCulture's solutions. The templates are intended to be used as hypothetical examples only and should not be used as a substitute for professional advice. You should seek your own professional advice to determine if the use of a template is permissible in your workplace or jurisdiction. You should independently determine whether the template is suitable for your circumstances.