MK16 EP Flashcards
Emergency Procedures
Alternating Red and Green (other than during transition)
Two sensors within limits 1.15 - 1.45
Third sensor out of limits
- Monitor secondary display
- Continue dive
Rig needs new S1-R to re-calibrate the O2 sensors
Alternating Red and Green (other than during transition)
All three O2 sensors within limits
- Monitor secondary display
- Continue dive
Low Primary Battery Voltage
Flashing Green (other than during decent)
Two or more O2 sensors greater than 1.45
- Monitor secondary display
- Close O2 bottle valve
- Monitor O2 HP indicator
- Manually add O2 as required
- Terminate dive
PEA not functioning properly
Flashing Red (other than during ascent)
Two or more O2 sensors less than 1.15
- Monitor secondary display
- Monitor O2 HP indicator
- Manually add O2 as required
- Maintain PPO2 within limits
- Terminate dive
O2 addition valve failure
Flashing Red (other than during ascent)
Low O2 partial pressure and/or low O2 bottle pressure as shown on pressure indicator
- Monitor secondary display
- Monitor O2 HP indicator
- Monitor diluent HP indicator
-Breathe open circuit when PPO2 reaches 0.16 - Terminate dive
Low O2 bottle pressure
Blank
No primary display
Dropping secondary display readings
- Monitor secondary display
- Monitor O2 HP indicator
- Manually add O2 as required
- Monitor O2 HP indicator
- Terminate dive
PEA failure
Blank
No primary display
Stable secondary display reading
- Monitor secondary display
- Terminate dive
Primary cable / Bendix connection failure
Blank
No primary display
Increasing secondary display reading
- Monitor secondary display
- Close O2 bottle valve
- Monitor O2 HP indicator
- Maintain PPO2 within limits
-Manually add O2 as required - Terminate dive
O2 bypass valve failure
Steady Red or Simultaneously Illuminated Steady Red and Green
Dropping secondary display reading (below normal limits)
- Monitor secondary display
- Monitor O2 HP indicator
- Manually add O2 as required
- Maintain PPO2 within limits
- Terminate dive
PEA Failure
Steady Red or Simultaneously Illuminated Steady Red and Green
Increasing second display reading (above normal limits)
- Monitor secondary display
- Close O2 bottle valve
- Monitor O2 HP indicator
- Maintain PPO2 within limits
- Manually add O2 as required
-Terminate dive
PEA failure
Flashing Red (no gas addition when O2 bypass valve is depressed)
No gas addition when O2 bypass valve is depressed
O2 bypass valve failed in the closed position or empty O2 bottle
- Monitor secondary display
- Check O2 HP indicator
- Monitor diluent HP indicator
- Breath on open-circuit when you hit 0.16 PPO2
- Terminate dive
O2 bypass valve failure in closed position
Steady Green
No gas addition when diluent bypass valve is depressed
- Monitor secondary display
- Monitor O2 HP indicator
- Check diluent HP indicator
- Terminate dive
Diluent addition valve failure
Steady Green, continuous gas venting (other then during ascent)
Hear and/or feel gas escaping from MK 16
If O2 indicator continues to drop
- Monitor secondary display
- Close O2 bottle valve
- Close diluent bottle valve
- Check O2 HP indicator
- Check diluent O2 HP indicator
- Open diluent bottle valve and manually dive the rig, adding O2 as required to maintain PPO2 between 1.15 and 1.45 ata
- Terminate dive
Steady Green, continuous gas venting (other then during ascent)
Hear and/or feel gas escaping from MK 16
If diluent indicator continues to drop
- Monitor secondary display
- Close O2 bottle valve
- Close diluent bottle valve
- Check O2 HP indicator
- Check diluent HP indicator
- Open O2 bottle valve
- Manually add diluent as required
- Terminate dive
Steady Green
Inhalation difficulty
- Monitor secondary display
- Check diluent HP indicator
- Add diluent until diaphragm vents on exhalation
- Continue dive
Steady Green (increased breathing resistance)
Increased breathing resistance
- Gurgling sounds
- Water in breathing hoses
- Decreased dive buoyancy
- Maintain a heads-up attitude
- Add diluent to force water out through the dump valve
- Breathe open-circuit mode
- Monitor diluent HP indicator
- Terminate dive
Flashing Red (water filled breathing loop)
Complete rig flood out
- Maintain a head-up attitude
- Add diluent to force water out through dump valve
- Breath on open circuit
- Terminate Dive
Steady Green
Secondary Display blank/fading readings
- Monitor primary display
- Terminate Dive
Steady Green
CO2 buildup
- Confusion
- Shortness of breath
- Panting
- Increased breathing rate
- Add diluent to ventilate the rig
- Breath on open-circuit mode
- Monitor diluent HP indicator
- Terminate dive
Steady Green
Conflict between primary and secondary display
- Low or negative secondary display reading with steady green primary display
- Monitor Secondary display
- Maintain ppO2 within limits using highest indicated ppO2 for reference
- Terminate dive
Flashing Green
UBA fails to switch from 0.75 to 1.30 mode
-Primary Flashing green
- Secondary display sensor reading above 0.90
- Monitor secondary display
- Terminate dive
