1. February 2005Ian Cook1 For presentation at Form 2 course, BSS. FORM 2 OXYGEN EQUIPMENT SEMINAR July 2004 Ian Cook Thanks to Harry Oxer for the use of the photographs and advise

2. February 2005Ian Cook2 Hypoxia What is hypoxia and what can happen with prolonged hypoxia? Hypoxia is the physical condition induced by an inadequate concentration of oxygen in the blood and the organs. The insidious danger of hypoxia is the subject's unawareness of his deteriorating faculties which may actually be perceived as a feeling of well-being or euphoria. Exposure to severe hypoxia will result in unconsciousness. Note: there is a wide variability in individual tolerance.

3. February 2005Ian Cook3 BREATHING AIR SAFETY POINTS Read this literature carefully as your and others lives does depend on correct handling procedures Oxygen under high pressure in the presence of organic compounds can cause spontaneous combustion. If oil or grease contaminated fitting and threads come in contact with Oxygen under high pressure there may be an explosion This includes sunburn cream, skin grease, cooking oils. All equipment must be clean and free of dust Cleaning is carried out using alcohol solvents and then allow all components to dry thoroughly. There are special solvents & procedures available. All components must be stored in clean sealed plastic bags in the plastic case located in the canteen. Always store MH cylinders in their protective bags, full and in a cool area. Only endorsed members may operate club MH EDS units. Oxygen cylinders can be filled by members on the current list: Only approved breathing oxygen cylinders that comply with Australian Standards and are in current test can be filled. Use only Dry Aviation Breathing Oxygen BOC Code 430 / RAAF Spec G172

4. Using oxygen for gliding Mountain High EDS-D1 system

5. February 2005Ian Cook5 Mountain High Oxygen supply Cylinder, contents gauge and regulator

6. February 2005Ian Cook6 EDS Pulse demand unit Speak port. Flow fault & apnea conditions External battery port Rt hand side

7. February 2005Ian Cook7 On/off switch and flow rate settings Green LED positive flow Red LED oxygen flow faults, & low battery

8. February 2005Ian Cook8 Using oxygen Check: Cylinder – security, sufficient contents, turned ON, gauge visible. Plumbing – lines correctly attached and secured Battery in unit and working. A spare battery and jack should be carried in an inside pocket. Battery effected by low temp EDS Unit connected to O 2 supply and to nasal cannula or mask – fit mask/Cannula prior to take off. Check operation before commencing flying

9. February 2005Ian Cook9 Settings The EDS unit has four different flow rate settings. These provide different O 2 flow rates for a variety of conditions and personnel requirements N D5, D10, D12 F10, F15, F20, F25 R/M

10. February 2005Ian Cook10 N Settings ‘N’ settings: Night or Now Mode Responds to breathing actions at all altitudes with standard delivery protocols. “Set and fly”. Recommended that all pilots use this setting for the majority of flights Flow increases automatically with height

11. February 2005Ian Cook11 D Setting Day or Delayed Mode Setting available ‘D5, D10, D12 The EDS unit does not start delivering O 2 till you reach the prescribed pressure altitude setting. Setting ‘D12’ On D12 the unit does not start delivering O 2 till a pressure altitude of 12,000’ is reached. Flow rate of 1.2 L/m Recommended that you use the D5 setting Flow increases automatically with height

12. February 2005Ian Cook12 F setting ‘F’ settings: Floor or Mask Each settings cause the EDS unit to ADD additional O 2 equivalent to the indicated setting. Setting ‘F10,F15, F20,F25’ Setting F10 At 8000’ the effective flow rate is.8 L/M + 1.0 L/m =1.8L/M Setting ‘F20’ At 4000’ you receive.4 L/M + 2.0 L/m =2.4L/M Useful if a smoker or have a respiratory condition Flow increases automatically with height

13. February 2005Ian Cook13 R/M Setting ‘R/M’ settings: Reserve / Manual This setting causes the EDS unit to respond to breathing actions with a fixed pulse length of 1/2 sec, regardless of pressure altitude. Equates to 100% O 2 for conventional systems. Effective flow rate of 10 L/M. Used as an emergency setting and allows deep inspiration breathing and maximum absorption.

14. February 2005Ian Cook14

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16. February 2005Ian Cook16 Press nose clip to fit Pull elastic both sides to snug fit Place elastic above ears Only mask above 18.000 with EDS 1 (FAA STD)

17. February 2005Ian Cook17 Alarms The EDS unit has audio and visual (red LED) alarms. Flow fault Pinched line. (Personal experience line pinched on undercarriage lever) O 2 supply removed Battery power to low to activate valves. (Go to R/M setting) APNEA Alarm Quite breathing for 45 sec Outlet Cannula disconnected Outlet Cannula tube pinched

18. February 2005Ian Cook18 Using oxygen Above 18,000’ FAI recommend full mask rather than just nasal prongs. * See note 1 MUST be on by 10,000ft ‘ GFA requirement ’ MUST trigger oxygen with each breath – this usually means breathe IN through nose Alarms sounds if 45 seconds elapse without breathing through nose, oxygen supply run out, battery power low, pinched line on HP or LP side or disconnected.

19. February 2005Ian Cook19 If you wear a beard, a good mask seal is difficult or impossible. Trim very short or remove beard prior to using masks. “For some of us beards makes us look younger and more dashing” You risk hypoxia at altitude! Note 1 I and others with beards have successfully used the system with a cannula on a number of wave flights to 23,000ft

20. February 2005Ian Cook20 Low battery alarm If Low Battery fault warning LED is on. Insert jack to reserve battery. Check system Ok. If battery fault alarm still on press to last button position – R/M mode (reserve/manual) – gives half second oxygen pulses. airbrakes, undercarriage down, and descend as quickly as safety allows. Don’t exceed Vne! This means well below 10,000ft

21. February 2005Ian Cook21 Alarms If any flow or fault alarms remain on and the fault cannot be diagnosed and fixed within I minute. press to last button position – R/M mode (reserve/manual) – gives half second oxygen pulses. airbrakes, undercarriage down, and descend as quickly as safety allows. Don’t exceed Vne! This means well below 10,000ft

22. February 2005Ian Cook22 Summary I personally use the ‘N’ setting & use oxygen on all flights except local or low altitude. If older, respiratory problems etc. use “F” settings Regularly Check your Oxygen system and know its functions. “It is your life that you may be putting at risk”.